google3/third_party/grte/v4_src/glibc-2.19/math/libm-test.inc

/* Copyright (C) 1997-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Andreas Jaeger <aj@suse.de>, 1997.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

/* Part of testsuite for libm.

   This file is processed by a perl script.  The resulting file has to
   be included by a master file that defines:

   Macros:
   FUNC(function): converts general function name (like cos) to
   name with correct suffix (e.g. cosl or cosf)
   MATHCONST(x):   like FUNC but for constants (e.g convert 0.0 to 0.0L)
   FLOAT:	   floating point type to test
   - TEST_MSG:	   informal message to be displayed
   CHOOSE(Clongdouble,Cdouble,Cfloat,Cinlinelongdouble,Cinlinedouble,Cinlinefloat):
   chooses one of the parameters as delta for testing
   equality
   PRINTF_EXPR	   Floating point conversion specification to print a variable
   of type FLOAT with printf.  PRINTF_EXPR just contains
   the specifier, not the percent and width arguments,
   e.g. "f".
   PRINTF_XEXPR	   Like PRINTF_EXPR, but print in hexadecimal format.
   PRINTF_NEXPR Like PRINTF_EXPR, but print nice.  */

/* This testsuite has currently tests for:
   acos, acosh, asin, asinh, atan, atan2, atanh,
   cbrt, ceil, copysign, cos, cosh, drem, erf, erfc, exp, exp10, exp2, expm1,
   fabs, fdim, finite, floor, fma, fmax, fmin, fmod, fpclassify,
   frexp, gamma, hypot,
   ilogb, isfinite, isinf, isnan, isnormal, issignaling,
   isless, islessequal, isgreater, isgreaterequal, islessgreater, isunordered,
   j0, j1, jn,
   ldexp, lgamma, log, log10, log1p, log2, logb,
   modf, nearbyint, nextafter, nexttoward,
   pow, pow10, remainder, remquo, rint, lrint, llrint,
   round, lround, llround,
   scalb, scalbn, scalbln, signbit, sin, sincos, sinh, sqrt, tan, tanh, tgamma, trunc,
   y0, y1, yn, significand

   and for the following complex math functions:
   cabs, cacos, cacosh, carg, casin, casinh, catan, catanh,
   ccos, ccosh, cexp, cimag, clog, clog10, conj, cpow, cproj, creal,
   csin, csinh, csqrt, ctan, ctanh.

   At the moment the following functions and macros aren't tested:
   lgamma_r,
   nan.

   Parameter handling is primitive in the moment:
   --verbose=[0..3] for different levels of output:
   0: only error count
   1: basic report on failed tests (default)
   2: full report on all tests
   -v for full output (equals --verbose=3)
   -u for generation of an ULPs file
 */

/* "Philosophy":

   This suite tests some aspects of the correct implementation of
   mathematical functions in libm.  Some simple, specific parameters
   are tested for correctness but there's no exhaustive
   testing.  Handling of specific inputs (e.g. infinity, not-a-number)
   is also tested.  Correct handling of exceptions is checked
   against.  These implemented tests should check all cases that are
   specified in ISO C99.

   NaN values: There exist signalling and quiet NaNs.  This implementation
   only uses quiet NaN as parameter.  Where the sign of a NaN is
   significant, this is not tested.  The payload of NaNs is not examined.

   Inline functions: Inlining functions should give an improvement in
   speed - but not in precission.  The inlined functions return
   reasonable values for a reasonable range of input values.  The
   result is not necessarily correct for all values and exceptions are
   not correctly raised in all cases.  Problematic input and return
   values are infinity, not-a-number and minus zero.  This suite
   therefore does not check these specific inputs and the exception
   handling for inlined mathematical functions - just the "reasonable"
   values are checked.

   Beware: The tests might fail for any of the following reasons:
   - Tests are wrong
   - Functions are wrong
   - Floating Point Unit not working properly
   - Compiler has errors

   With e.g. gcc 2.7.2.2 the test for cexp fails because of a compiler error.


   To Do: All parameter should be numbers that can be represented as
   exact floating point values.  Currently some values cannot be
   represented exactly and therefore the result is not the expected
   result.  For this we will use 36 digits so that numbers can be
   represented exactly.  */

#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif

#include <complex.h>
#include <math.h>
#include <float.h>
#include <fenv.h>
#include <limits.h>

#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <argp.h>
#include <tininess.h>
#include <math-tests.h>

/* Structure for ulp data for a test, a function, or the real or
   imaginary part of a function.  */
struct ulp_data
{
  const char *name;
  FLOAT max_ulp;
};

/* This header defines test_ulps, func_ulps, func_real_ulps and
   func_imag_ulps arrays.  */
#include "libm-test-ulps.h"

/* Allow platforms without all rounding modes to test properly,
   assuming they provide an __FE_UNDEFINED in <bits/fenv.h> which
   causes fesetround() to return failure.  */
#ifndef FE_TONEAREST
# define FE_TONEAREST	__FE_UNDEFINED
#endif
#ifndef FE_TOWARDZERO
# define FE_TOWARDZERO	__FE_UNDEFINED
#endif
#ifndef FE_UPWARD
# define FE_UPWARD	__FE_UNDEFINED
#endif
#ifndef FE_DOWNWARD
# define FE_DOWNWARD	__FE_UNDEFINED
#endif

/* Possible exceptions */
#define NO_EXCEPTION			0x0
#define INVALID_EXCEPTION		0x1
#define DIVIDE_BY_ZERO_EXCEPTION	0x2
#define OVERFLOW_EXCEPTION		0x4
#define UNDERFLOW_EXCEPTION		0x8
#define INEXACT_EXCEPTION		0x10
/* The next flags signals that those exceptions are allowed but not required.   */
#define INVALID_EXCEPTION_OK		0x20
#define DIVIDE_BY_ZERO_EXCEPTION_OK	0x40
#define OVERFLOW_EXCEPTION_OK		0x80
#define UNDERFLOW_EXCEPTION_OK		0x100
/* For "inexact" exceptions, the default is allowed but not required
   unless INEXACT_EXCEPTION or NO_INEXACT_EXCEPTION is specified.  */
#define NO_INEXACT_EXCEPTION		0x200
#define EXCEPTIONS_OK INVALID_EXCEPTION_OK+DIVIDE_BY_ZERO_EXCEPTION_OK
/* Some special test flags, passed together with exceptions.  */
#define IGNORE_ZERO_INF_SIGN		0x400
#define TEST_NAN_SIGN			0x800
#define NO_TEST_INLINE			0x1000
#define XFAIL_TEST			0x2000
/* Indicate errno settings required or disallowed.  */
#define ERRNO_UNCHANGED			0x4000
#define ERRNO_EDOM			0x8000
#define ERRNO_ERANGE			0x10000
/* Flags generated by gen-libm-test.pl, not entered here manually.  */
#define IGNORE_RESULT			0x20000

/* Values underflowing only for float.  */
#ifdef TEST_FLOAT
# define UNDERFLOW_EXCEPTION_FLOAT	UNDERFLOW_EXCEPTION
# define UNDERFLOW_EXCEPTION_OK_FLOAT	UNDERFLOW_EXCEPTION_OK
#else
# define UNDERFLOW_EXCEPTION_FLOAT	0
# define UNDERFLOW_EXCEPTION_OK_FLOAT	0
#endif
/* Values underflowing only for double or types with a larger least
   positive normal value.  */
#if defined TEST_FLOAT || defined TEST_DOUBLE \
  || (defined TEST_LDOUBLE && LDBL_MIN_EXP >= DBL_MIN_EXP)
# define UNDERFLOW_EXCEPTION_DOUBLE	UNDERFLOW_EXCEPTION
# define UNDERFLOW_EXCEPTION_OK_DOUBLE	UNDERFLOW_EXCEPTION_OK
#else
# define UNDERFLOW_EXCEPTION_DOUBLE	0
# define UNDERFLOW_EXCEPTION_OK_DOUBLE	0
#endif
/* Values underflowing only for IBM long double or types with a larger least
   positive normal value.  */
#if defined TEST_FLOAT || (defined TEST_LDOUBLE && LDBL_MIN_EXP > DBL_MIN_EXP)
# define UNDERFLOW_EXCEPTION_LDOUBLE_IBM	UNDERFLOW_EXCEPTION
#else
# define UNDERFLOW_EXCEPTION_LDOUBLE_IBM	0
#endif
/* Values underflowing on architectures detecting tininess before
   rounding, but not on those detecting tininess after rounding.  */
#define UNDERFLOW_EXCEPTION_BEFORE_ROUNDING	(TININESS_AFTER_ROUNDING \
						 ? 0			\
						 : UNDERFLOW_EXCEPTION)

/* Inline tests disabled for particular types.  */
#ifdef TEST_FLOAT
# define NO_TEST_INLINE_FLOAT	NO_TEST_INLINE
#else
# define NO_TEST_INLINE_FLOAT	0
#endif
#ifdef TEST_DOUBLE
# define NO_TEST_INLINE_DOUBLE	NO_TEST_INLINE
#else
# define NO_TEST_INLINE_DOUBLE	0
#endif

/* Conditions used by tests generated by gen-auto-libm-tests.c.  */
#ifdef TEST_FLOAT
# define TEST_COND_flt_32	1
#else
# define TEST_COND_flt_32	0
#endif
#if defined TEST_DOUBLE || (defined TEST_LDOUBLE && LDBL_MANT_DIG == 53)
# define TEST_COND_dbl_64	1
#else
# define TEST_COND_dbl_64	0
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 64 && LDBL_MIN_EXP == -16381
# define TEST_COND_ldbl_96_intel	1
#else
# define TEST_COND_ldbl_96_intel	0
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 64 && LDBL_MIN_EXP == -16382
# define TEST_COND_ldbl_96_m68k	1
#else
# define TEST_COND_ldbl_96_m68k	0
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 113
# define TEST_COND_ldbl_128	1
#else
# define TEST_COND_ldbl_128	0
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG == 106
# define TEST_COND_ldbl_128ibm	1
#else
# define TEST_COND_ldbl_128ibm	0
#endif
#if LONG_MAX == 0x7fffffff
# define TEST_COND_long32	1
# define TEST_COND_long64	0
#else
# define TEST_COND_long32	0
# define TEST_COND_long64	1
#endif
#define TEST_COND_before_rounding	(!TININESS_AFTER_ROUNDING)
#define TEST_COND_after_rounding	TININESS_AFTER_ROUNDING

#ifdef __x86_64__
# define TEST_COND_x86_64	1
#else
# define TEST_COND_x86_64	0
#endif

#ifdef __i386__
# define TEST_COND_x86		1
#else
# define TEST_COND_x86		0
#endif

/* Various constants (we must supply them precalculated for accuracy).  */
#define M_PI_6l			.52359877559829887307710723054658383L
#define M_PI_34l		2.356194490192344928846982537459627163L	/* 3*pi/4 */
#define M_PI_34_LOG10El		1.023282265381381010614337719073516828L
#define M_PI2_LOG10El		0.682188176920920673742891812715677885L
#define M_PI4_LOG10El		0.341094088460460336871445906357838943L
#define M_PI_LOG10El		1.364376353841841347485783625431355770L

#define ulps_file_name "ULPs"	/* Name of the ULPs file.  */
static FILE *ulps_file;		/* File to document difference.  */
static int output_ulps;		/* Should ulps printed?  */
static char *output_dir;	/* Directory where generated files will be written.  */

static int noErrors;	/* number of errors */
static int noTests;	/* number of tests (without testing exceptions) */
static int noExcTests;	/* number of tests for exception flags */
static int noErrnoTests;/* number of tests for errno values */

static int verbose;
static int output_max_error;	/* Should the maximal errors printed?  */
static int output_points;	/* Should the single function results printed?  */
static int ignore_max_ulp;	/* Should we ignore max_ulp?  */

#define plus_zero	CHOOSE (0.0L, 0.0, 0.0f,	\
				0.0L, 0.0, 0.0f)
#define minus_zero	CHOOSE (-0.0L, -0.0, -0.0f,	\
				-0.0L, -0.0, -0.0f)
#define plus_infty	CHOOSE (HUGE_VALL, HUGE_VAL, HUGE_VALF, \
				HUGE_VALL, HUGE_VAL, HUGE_VALF)
#define minus_infty	CHOOSE (-HUGE_VALL, -HUGE_VAL, -HUGE_VALF,	\
				-HUGE_VALL, -HUGE_VAL, -HUGE_VALF)
#define qnan_value	FUNC (__builtin_nan) ("")
#define max_value	CHOOSE (LDBL_MAX, DBL_MAX, FLT_MAX,	\
				LDBL_MAX, DBL_MAX, FLT_MAX)
#define min_value	CHOOSE (LDBL_MIN, DBL_MIN, FLT_MIN,	\
				LDBL_MIN, DBL_MIN, FLT_MIN)
#define min_subnorm_value	CHOOSE (__LDBL_DENORM_MIN__,	\
					__DBL_DENORM_MIN__,	\
					__FLT_DENORM_MIN__,	\
					__LDBL_DENORM_MIN__,	\
					__DBL_DENORM_MIN__,	\
					__FLT_DENORM_MIN__)

static FLOAT max_error, real_max_error, imag_max_error;


#define BUILD_COMPLEX(real, imag) \
  ({ __complex__ FLOAT __retval;					      \
     __real__ __retval = (real);					      \
     __imag__ __retval = (imag);					      \
     __retval; })

#define MANT_DIG CHOOSE ((LDBL_MANT_DIG-1), (DBL_MANT_DIG-1), (FLT_MANT_DIG-1),  \
			 (LDBL_MANT_DIG-1), (DBL_MANT_DIG-1), (FLT_MANT_DIG-1))
#define MIN_EXP CHOOSE ((LDBL_MIN_EXP-1), (DBL_MIN_EXP-1), (FLT_MIN_EXP-1),	\
			(LDBL_MIN_EXP-1), (DBL_MIN_EXP-1), (FLT_MIN_EXP-1))

/* Compare KEY (a string, with the name of a test or a function) with
   ULP (a pointer to a struct ulp_data structure), returning a value
   less than, equal to or greater than zero for use in bsearch.  */

static int
compare_ulp_data (const void *key, const void *ulp)
{
  const char *keystr = key;
  const struct ulp_data *ulpdat = ulp;
  return strcmp (keystr, ulpdat->name);
}

/* Return the ulps for NAME in array DATA with NMEMB elements, or 0 if
   no ulps listed.  */

static FLOAT
find_ulps (const char *name, const struct ulp_data *data, size_t nmemb)
{
  const struct ulp_data *entry = bsearch (name, data, nmemb, sizeof (*data),
					  compare_ulp_data);
  if (entry == NULL)
    return 0;
  else
    return entry->max_ulp;
}

/* Return the ulps for test NAME.  */

static FLOAT
find_test_ulps (const char *name)
{
  return find_ulps (name, test_ulps,
		    sizeof (test_ulps) / sizeof (test_ulps[0]));
}

/* Return the ulps for real function NAME.  */

static FLOAT
find_function_ulps (const char *name)
{
  return find_ulps (name, func_ulps,
		    sizeof (func_ulps) / sizeof (func_ulps[0]));
}

/* Return the ulps for complex function NAME.  */

static __complex__ FLOAT
find_complex_function_ulps (const char *name)
{
  FLOAT ulp_real = find_ulps (name, func_real_ulps,
			      (sizeof (func_real_ulps)
			       / sizeof (func_real_ulps[0])));
  FLOAT ulp_imag = find_ulps (name, func_imag_ulps,
			      (sizeof (func_imag_ulps)
			       / sizeof (func_imag_ulps[0])));
  return BUILD_COMPLEX (ulp_real, ulp_imag);
}

static void
init_max_error (void)
{
  max_error = 0;
  real_max_error = 0;
  imag_max_error = 0;
  feclearexcept (FE_ALL_EXCEPT);
  errno = 0;
}

static void
set_max_error (FLOAT current, FLOAT *curr_max_error)
{
  if (current > *curr_max_error)
    *curr_max_error = current;
}


/* Print a FLOAT.  */
static void
print_float (FLOAT f)
{
  /* As printf doesn't differ between a sNaN and a qNaN, do this manually.  */
  if (issignaling (f))
    printf ("sNaN\n");
  else if (isnan (f))
    printf ("qNaN\n");
  else
    printf ("% .20" PRINTF_EXPR "  % .20" PRINTF_XEXPR "\n", f, f);
}

/* Should the message print to screen?  This depends on the verbose flag,
   and the test status.  */
static int
print_screen (int ok)
{
  if (output_points
      && (verbose > 1
	  || (verbose == 1 && ok == 0)))
    return 1;
  return 0;
}


/* Should the message print to screen?  This depends on the verbose flag,
   and the test status.  */
static int
print_screen_max_error (int ok)
{
  if (output_max_error
      && (verbose > 1
	  || ((verbose == 1) && (ok == 0))))
    return 1;
  return 0;
}

/* Update statistic counters.  */
static void
update_stats (int ok)
{
  ++noTests;
  if (!ok)
    ++noErrors;
}

static void
print_ulps (const char *test_name, FLOAT ulp)
{
  if (output_ulps)
    {
      fprintf (ulps_file, "Test \"%s\":\n", test_name);
      fprintf (ulps_file, "%s: %.0" PRINTF_NEXPR "\n",
	       CHOOSE("ldouble", "double", "float",
		      "ildouble", "idouble", "ifloat"),
	       FUNC(ceil) (ulp));
    }
}

static void
print_function_ulps (const char *function_name, FLOAT ulp)
{
  if (output_ulps)
    {
      fprintf (ulps_file, "Function: \"%s\":\n", function_name);
      fprintf (ulps_file, "%s: %.0" PRINTF_NEXPR "\n",
	       CHOOSE("ldouble", "double", "float",
		      "ildouble", "idouble", "ifloat"),
	       FUNC(ceil) (ulp));
    }
}


static void
print_complex_function_ulps (const char *function_name, FLOAT real_ulp,
			     FLOAT imag_ulp)
{
  if (output_ulps)
    {
      if (real_ulp != 0.0)
	{
	  fprintf (ulps_file, "Function: Real part of \"%s\":\n", function_name);
	  fprintf (ulps_file, "%s: %.0" PRINTF_NEXPR "\n",
		   CHOOSE("ldouble", "double", "float",
			  "ildouble", "idouble", "ifloat"),
		   FUNC(ceil) (real_ulp));
	}
      if (imag_ulp != 0.0)
	{
	  fprintf (ulps_file, "Function: Imaginary part of \"%s\":\n", function_name);
	  fprintf (ulps_file, "%s: %.0" PRINTF_NEXPR "\n",
		   CHOOSE("ldouble", "double", "float",
			  "ildouble", "idouble", "ifloat"),
		   FUNC(ceil) (imag_ulp));
	}


    }
}



/* Test if Floating-Point stack hasn't changed */
static void
fpstack_test (const char *test_name)
{
#if defined (__i386__) || defined (__x86_64__)
  static int old_stack;
  int sw;

  asm ("fnstsw" : "=a" (sw));
  sw >>= 11;
  sw &= 7;

  if (sw != old_stack)
    {
      printf ("FP-Stack wrong after test %s (%d, should be %d)\n",
	      test_name, sw, old_stack);
      ++noErrors;
      old_stack = sw;
    }
#endif
}


static void
print_max_error (const char *func_name)
{
  FLOAT allowed = find_function_ulps (func_name);
  int ok = 0;

  if (max_error == 0.0 || (max_error <= allowed && !ignore_max_ulp))
    {
      ok = 1;
    }

  if (!ok)
    print_function_ulps (func_name, max_error);


  if (print_screen_max_error (ok))
    {
      printf ("Maximal error of `%s'\n", func_name);
      printf (" is      : %.0" PRINTF_NEXPR " ulp\n", FUNC(ceil) (max_error));
      printf (" accepted: %.0" PRINTF_NEXPR " ulp\n", FUNC(ceil) (allowed));
    }

  update_stats (ok);
}


static void
print_complex_max_error (const char *func_name)
{
  __complex__ FLOAT allowed = find_complex_function_ulps (func_name);
  int ok = 0;

  if ((real_max_error == 0 && imag_max_error == 0)
      || (real_max_error <= __real__ allowed
	  && imag_max_error <= __imag__ allowed
	  && !ignore_max_ulp))
    {
      ok = 1;
    }

  if (!ok)
    print_complex_function_ulps (func_name, real_max_error, imag_max_error);


  if (print_screen_max_error (ok))
    {
      printf ("Maximal error of real part of: %s\n", func_name);
      printf (" is      : %.0" PRINTF_NEXPR " ulp\n",
	      FUNC(ceil) (real_max_error));
      printf (" accepted: %.0" PRINTF_NEXPR " ulp\n",
	      FUNC(ceil) (__real__ allowed));
      printf ("Maximal error of imaginary part of: %s\n", func_name);
      printf (" is      : %.0" PRINTF_NEXPR " ulp\n",
	      FUNC(ceil) (imag_max_error));
      printf (" accepted: %.0" PRINTF_NEXPR " ulp\n",
	      FUNC(ceil) (__imag__ allowed));
    }

  update_stats (ok);
}


/* Test whether a given exception was raised.  */
static void
test_single_exception (const char *test_name,
		       int exception,
		       int exc_flag,
		       int fe_flag,
		       const char *flag_name)
{
#ifndef TEST_INLINE
  int ok = 1;
  if (exception & exc_flag)
    {
      if (fetestexcept (fe_flag))
	{
	  if (print_screen (1))
	    printf ("Pass: %s: Exception \"%s\" set\n", test_name, flag_name);
	}
      else
	{
	  ok = 0;
	  if (print_screen (0))
	    printf ("Failure: %s: Exception \"%s\" not set\n",
		    test_name, flag_name);
	}
    }
  else
    {
      if (fetestexcept (fe_flag))
	{
	  ok = 0;
	  if (print_screen (0))
	    printf ("Failure: %s: Exception \"%s\" set\n",
		    test_name, flag_name);
	}
      else
	{
	  if (print_screen (1))
	    printf ("%s: Exception \"%s\" not set\n", test_name,
		    flag_name);
	}
    }
  if (!ok)
    ++noErrors;

#endif
}


/* Test whether exceptions given by EXCEPTION are raised.  Ignore thereby
   allowed but not required exceptions.
*/
static void
test_exceptions (const char *test_name, int exception)
{
  if (EXCEPTION_TESTS (FLOAT))
    {
      ++noExcTests;
#ifdef FE_DIVBYZERO
      if ((exception & DIVIDE_BY_ZERO_EXCEPTION_OK) == 0)
	test_single_exception (test_name, exception,
			       DIVIDE_BY_ZERO_EXCEPTION, FE_DIVBYZERO,
			       "Divide by zero");
#endif
#ifdef FE_INVALID
      if ((exception & INVALID_EXCEPTION_OK) == 0)
	test_single_exception (test_name, exception,
			       INVALID_EXCEPTION, FE_INVALID,
			       "Invalid operation");
#endif
#ifdef FE_OVERFLOW
      if ((exception & OVERFLOW_EXCEPTION_OK) == 0)
	test_single_exception (test_name, exception, OVERFLOW_EXCEPTION,
			       FE_OVERFLOW, "Overflow");
#endif
#ifdef FE_UNDERFLOW
      if ((exception & UNDERFLOW_EXCEPTION_OK) == 0)
	test_single_exception (test_name, exception, UNDERFLOW_EXCEPTION,
			       FE_UNDERFLOW, "Underflow");
#endif
#ifdef FE_INEXACT
      if ((exception & (INEXACT_EXCEPTION | NO_INEXACT_EXCEPTION)) != 0)
	test_single_exception (test_name, exception, INEXACT_EXCEPTION,
			       FE_INEXACT, "Inexact");
#endif
    }
  feclearexcept (FE_ALL_EXCEPT);
}

/* Test whether errno for TEST_NAME, set to ERRNO_VALUE, has value
   EXPECTED_VALUE (description EXPECTED_NAME).  */
static void
test_single_errno (const char *test_name, int errno_value,
		   int expected_value, const char *expected_name)
{
#ifndef TEST_INLINE
  if (errno_value == expected_value)
    {
      if (print_screen (1))
	printf ("Pass: %s: errno set to %d (%s)\n", test_name, errno_value,
		expected_name);
    }
  else
    {
      ++noErrors;
      if (print_screen (0))
	printf ("Failure: %s: errno set to %d, expected %d (%s)\n",
		test_name, errno_value, expected_value, expected_name);
    }
#endif
}

/* Test whether errno (value ERRNO_VALUE) has been for TEST_NAME set
   as required by EXCEPTIONS.  */
static void
test_errno (const char *test_name, int errno_value, int exceptions)
{
  ++noErrnoTests;
  if (exceptions & ERRNO_UNCHANGED)
    test_single_errno (test_name, errno_value, 0, "unchanged");
  if (exceptions & ERRNO_EDOM)
    test_single_errno (test_name, errno_value, EDOM, "EDOM");
  if (exceptions & ERRNO_ERANGE)
    test_single_errno (test_name, errno_value, ERANGE, "ERANGE");
}

/* Returns the number of ulps that GIVEN is away from EXPECTED.  */
#define ULPDIFF(given, expected) \
	(FUNC(fabs) ((given) - (expected)) / ulp (expected))

/* Returns the size of an ulp for VALUE.  */
static FLOAT
ulp (FLOAT value)
{
  FLOAT ulp;

  switch (fpclassify (value))
    {
      case FP_ZERO:
	/* We compute the distance to the next FP which is the same as the
	   value of the smallest subnormal number. Previously we used
	   2^(-MANT_DIG) which is too large a value to be useful. Note that we
	   can't use ilogb(0), since that isn't a valid thing to do. As a point
	   of comparison Java's ulp returns the next normal value e.g.
	   2^(1 - MAX_EXP) for ulp(0), but that is not what we want for
	   glibc.  */
	/* Fall through...  */
      case FP_SUBNORMAL:
        /* The next closest subnormal value is a constant distance away.  */
	ulp = FUNC(ldexp) (1.0, MIN_EXP - MANT_DIG);
	break;

      case FP_NORMAL:
	ulp = FUNC(ldexp) (1.0, FUNC(ilogb) (value) - MANT_DIG);
	break;

      default:
	/* It should never happen. */
	abort ();
	break;
    }
  return ulp;
}

static void
check_float_internal (const char *test_name, FLOAT computed, FLOAT expected,
		      int exceptions,
		      FLOAT *curr_max_error)
{
  int ok = 0;
  int print_diff = 0;
  FLOAT diff = 0;
  FLOAT ulps = 0;
  int errno_value = errno;

  test_exceptions (test_name, exceptions);
  test_errno (test_name, errno_value, exceptions);
  if (exceptions & IGNORE_RESULT)
    goto out;
  FLOAT max_ulp = find_test_ulps (test_name);
  if (issignaling (computed) && issignaling (expected))
    {
      if ((exceptions & TEST_NAN_SIGN) != 0
	  && signbit (computed) != signbit (expected))
	{
	  ok = 0;
	  printf ("signaling NaN has wrong sign.\n");
	}
      else
	ok = 1;
    }
  else if (issignaling (computed) || issignaling (expected))
    ok = 0;
  else if (isnan (computed) && isnan (expected))
    {
      if ((exceptions & TEST_NAN_SIGN) != 0
	  && signbit (computed) != signbit (expected))
	{
	  ok = 0;
	  printf ("quiet NaN has wrong sign.\n");
	}
      else
	ok = 1;
    }
  else if (isinf (computed) && isinf (expected))
    {
      /* Test for sign of infinities.  */
      if ((exceptions & IGNORE_ZERO_INF_SIGN) == 0
	  && signbit (computed) != signbit (expected))
	{
	  ok = 0;
	  printf ("infinity has wrong sign.\n");
	}
      else
	ok = 1;
    }
  /* Don't calculate ULPs for infinities or any kind of NaNs.  */
  else if (isinf (computed) || isnan (computed)
	   || isinf (expected) || isnan (expected))
    ok = 0;
  else
    {
      diff = FUNC(fabs) (computed - expected);
      ulps = ULPDIFF (computed, expected);
      set_max_error (ulps, curr_max_error);
      print_diff = 1;
      if ((exceptions & IGNORE_ZERO_INF_SIGN) == 0
	  && computed == 0.0 && expected == 0.0
	  && signbit(computed) != signbit (expected))
	ok = 0;
      else if (ulps <= 0.5 || (ulps <= max_ulp && !ignore_max_ulp))
	ok = 1;
      else
	{
	  ok = 0;
	  print_ulps (test_name, ulps);
	}

    }
  if (print_screen (ok))
    {
      if (!ok)
	printf ("Failure: ");
      printf ("Test: %s\n", test_name);
      printf ("Result:\n");
      printf (" is:         ");
      print_float (computed);
      printf (" should be:  ");
      print_float (expected);
      if (print_diff)
	{
	  printf (" difference: % .20" PRINTF_EXPR "  % .20" PRINTF_XEXPR
		  "\n", diff, diff);
	  printf (" ulp       : % .4" PRINTF_NEXPR "\n", ulps);
	  printf (" max.ulp   : % .4" PRINTF_NEXPR "\n", max_ulp);
	}
    }
  update_stats (ok);

 out:
  fpstack_test (test_name);
  errno = 0;
}


static void
check_float (const char *test_name, FLOAT computed, FLOAT expected,
	     int exceptions)
{
  check_float_internal (test_name, computed, expected,
			exceptions, &max_error);
}


static void
check_complex (const char *test_name, __complex__ FLOAT computed,
	       __complex__ FLOAT expected,
	       int exception)
{
  FLOAT part_comp, part_exp;
  char *str;

  if (asprintf (&str, "Real part of: %s", test_name) == -1)
    abort ();

  part_comp = __real__ computed;
  part_exp = __real__ expected;

  check_float_internal (str, part_comp, part_exp,
			exception, &real_max_error);
  free (str);

  if (asprintf (&str, "Imaginary part of: %s", test_name) == -1)
    abort ();

  part_comp = __imag__ computed;
  part_exp = __imag__ expected;

  /* Don't check again for exceptions or errno, just pass through the
     other relevant flags.  */
  check_float_internal (str, part_comp, part_exp,
			exception & (IGNORE_ZERO_INF_SIGN
				     | TEST_NAN_SIGN
				     | IGNORE_RESULT),
			&imag_max_error);
  free (str);
}


/* Check that computed and expected values are equal (int values).  */
static void
check_int (const char *test_name, int computed, int expected,
	   int exceptions)
{
  int ok = 0;
  int errno_value = errno;

  test_exceptions (test_name, exceptions);
  test_errno (test_name, errno_value, exceptions);
  if (exceptions & IGNORE_RESULT)
    goto out;
  noTests++;
  if (computed == expected)
    ok = 1;

  if (print_screen (ok))
    {
      if (!ok)
	printf ("Failure: ");
      printf ("Test: %s\n", test_name);
      printf ("Result:\n");
      printf (" is:         %d\n", computed);
      printf (" should be:  %d\n", expected);
    }

  update_stats (ok);
 out:
  fpstack_test (test_name);
  errno = 0;
}


/* Check that computed and expected values are equal (long int values).  */
static void
check_long (const char *test_name, long int computed, long int expected,
	    int exceptions)
{
  int ok = 0;
  int errno_value = errno;

  test_exceptions (test_name, exceptions);
  test_errno (test_name, errno_value, exceptions);
  if (exceptions & IGNORE_RESULT)
    goto out;
  noTests++;
  if (computed == expected)
    ok = 1;

  if (print_screen (ok))
    {
      if (!ok)
	printf ("Failure: ");
      printf ("Test: %s\n", test_name);
      printf ("Result:\n");
      printf (" is:         %ld\n", computed);
      printf (" should be:  %ld\n", expected);
    }

  update_stats (ok);
 out:
  fpstack_test (test_name);
  errno = 0;
}


/* Check that computed value is true/false.  */
static void
check_bool (const char *test_name, int computed, int expected,
	    int exceptions)
{
  int ok = 0;
  int errno_value = errno;

  test_exceptions (test_name, exceptions);
  test_errno (test_name, errno_value, exceptions);
  if (exceptions & IGNORE_RESULT)
    goto out;
  noTests++;
  if ((computed == 0) == (expected == 0))
    ok = 1;

  if (print_screen (ok))
    {
      if (!ok)
	printf ("Failure: ");
      printf ("Test: %s\n", test_name);
      printf ("Result:\n");
      printf (" is:         %d\n", computed);
      printf (" should be:  %d\n", expected);
    }

  update_stats (ok);
 out:
  fpstack_test (test_name);
  errno = 0;
}


/* check that computed and expected values are equal (long int values) */
static void
check_longlong (const char *test_name, long long int computed,
		long long int expected,
		int exceptions)
{
  int ok = 0;
  int errno_value = errno;

  test_exceptions (test_name, exceptions);
  test_errno (test_name, errno_value, exceptions);
  if (exceptions & IGNORE_RESULT)
    goto out;
  noTests++;
  if (computed == expected)
    ok = 1;

  if (print_screen (ok))
    {
      if (!ok)
	printf ("Failure:");
      printf ("Test: %s\n", test_name);
      printf ("Result:\n");
      printf (" is:         %lld\n", computed);
      printf (" should be:  %lld\n", expected);
    }

  update_stats (ok);
 out:
  fpstack_test (test_name);
  errno = 0;
}

/* Return whether a test with flags EXCEPTIONS should be run.  */
static int
enable_test (int exceptions)
{
  if (exceptions & XFAIL_TEST)
    return 0;
#ifdef TEST_INLINE
  if (exceptions & NO_TEST_INLINE)
    return 0;
#endif
  return 1;
}

/* Structures for each kind of test.  */
struct test_f_f_data
{
  const char *arg_str;
  FLOAT arg;
  FLOAT expected;
  int exceptions;
};
struct test_ff_f_data
{
  const char *arg_str;
  FLOAT arg1, arg2;
  FLOAT expected;
  int exceptions;
};
struct test_ff_f_data_nexttoward
{
  const char *arg_str;
  FLOAT arg1;
  long double arg2;
  FLOAT expected;
  int exceptions;
};
struct test_fi_f_data
{
  const char *arg_str;
  FLOAT arg1;
  int arg2;
  FLOAT expected;
  int exceptions;
};
struct test_fl_f_data
{
  const char *arg_str;
  FLOAT arg1;
  long int arg2;
  FLOAT expected;
  int exceptions;
};
struct test_if_f_data
{
  const char *arg_str;
  int arg1;
  FLOAT arg2;
  FLOAT expected;
  int exceptions;
};
struct test_fff_f_data
{
  const char *arg_str;
  FLOAT arg1, arg2, arg3;
  FLOAT expected;
  int exceptions;
};
struct test_c_f_data
{
  const char *arg_str;
  FLOAT argr, argc;
  FLOAT expected;
  int exceptions;
};
/* Used for both RUN_TEST_LOOP_f_f1 and RUN_TEST_LOOP_fI_f1.  */
struct test_f_f1_data
{
  const char *arg_str;
  FLOAT arg;
  FLOAT expected;
  int exceptions;
  int extra_test;
  int extra_expected;
};
struct test_fF_f1_data
{
  const char *arg_str;
  FLOAT arg;
  FLOAT expected;
  int exceptions;
  int extra_test;
  FLOAT extra_expected;
};
struct test_ffI_f1_data
{
  const char *arg_str;
  FLOAT arg1, arg2;
  FLOAT expected;
  int exceptions;
  int extra_test;
  int extra_expected;
};
struct test_c_c_data
{
  const char *arg_str;
  FLOAT argr, argc;
  FLOAT expr, expc;
  int exceptions;
};
struct test_cc_c_data
{
  const char *arg_str;
  FLOAT arg1r, arg1c, arg2r, arg2c;
  FLOAT expr, expc;
  int exceptions;
};
/* Used for all of RUN_TEST_LOOP_f_i, RUN_TEST_LOOP_f_i_tg,
   RUN_TEST_LOOP_f_b and RUN_TEST_LOOP_f_b_tg.  */
struct test_f_i_data
{
  const char *arg_str;
  FLOAT arg;
  int expected;
  int exceptions;
};
struct test_ff_i_data
{
  const char *arg_str;
  FLOAT arg1, arg2;
  int expected;
  int exceptions;
};
struct test_f_l_data
{
  const char *arg_str;
  FLOAT arg;
  long int expected;
  int exceptions;
};
struct test_f_L_data
{
  const char *arg_str;
  FLOAT arg;
  long long int expected;
  int exceptions;
};
struct test_fFF_11_data
{
  const char *arg_str;
  FLOAT arg;
  int exceptions;
  int extra1_test;
  FLOAT extra1_expected;
  int extra2_test;
  FLOAT extra2_expected;
};

/* Set the rounding mode, or restore the saved value.  */
#define IF_ROUND_INIT_	/* Empty.  */
#define IF_ROUND_INIT_FE_DOWNWARD		\
  int save_round_mode = fegetround ();		\
  if (ROUNDING_TESTS (FLOAT, FE_DOWNWARD)	\
      && fesetround (FE_DOWNWARD) == 0)
#define IF_ROUND_INIT_FE_TONEAREST		\
  int save_round_mode = fegetround ();		\
  if (ROUNDING_TESTS (FLOAT, FE_TONEAREST)	\
      && fesetround (FE_TONEAREST) == 0)
#define IF_ROUND_INIT_FE_TOWARDZERO		\
  int save_round_mode = fegetround ();		\
  if (ROUNDING_TESTS (FLOAT, FE_TOWARDZERO)	\
      && fesetround (FE_TOWARDZERO) == 0)
#define IF_ROUND_INIT_FE_UPWARD			\
  int save_round_mode = fegetround ();		\
  if (ROUNDING_TESTS (FLOAT, FE_UPWARD)		\
      && fesetround (FE_UPWARD) == 0)
#define ROUND_RESTORE_	/* Empty.  */
#define ROUND_RESTORE_FE_DOWNWARD		\
  fesetround (save_round_mode)
#define ROUND_RESTORE_FE_TONEAREST		\
  fesetround (save_round_mode)
#define ROUND_RESTORE_FE_TOWARDZERO		\
  fesetround (save_round_mode)
#define ROUND_RESTORE_FE_UPWARD			\
  fesetround (save_round_mode)

/* Common setup for an individual test.  */
#define COMMON_TEST_SETUP(ARG_STR)					\
  char *test_name;							\
  if (asprintf (&test_name, "%s (%s)", this_func, (ARG_STR)) == -1)	\
    abort ()

/* Setup for a test with an extra output.  */
#define EXTRA_OUTPUT_TEST_SETUP(ARG_STR, N)			\
  char *extra##N##_name;					\
  if (asprintf (&extra##N##_name, "%s (%s) extra output " #N,	\
		this_func, (ARG_STR)) == -1)			\
    abort ()

/* Common cleanup after an individual test.  */
#define COMMON_TEST_CLEANUP			\
  free (test_name)

/* Cleanup for a test with an extra output.  */
#define EXTRA_OUTPUT_TEST_CLEANUP(N)		\
  free (extra##N##_name)

/* Run an individual test, including any required setup and checking
   of results, or loop over all tests in an array.  */
#define RUN_TEST_f_f(ARG_STR, FUNC_NAME, ARG, EXPECTED,			\
		     EXCEPTIONS)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_float (test_name, FUNC (FUNC_NAME) (ARG), EXPECTED,	\
		     EXCEPTIONS);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_f(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_f ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		    (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_2_f(ARG_STR, FUNC_NAME, ARG1, ARG2, EXPECTED,	\
		     EXCEPTIONS)				\
  do								\
    if (enable_test (EXCEPTIONS))				\
      {								\
	COMMON_TEST_SETUP (ARG_STR);				\
	check_float (test_name, FUNC (FUNC_NAME) (ARG1, ARG2),	\
		     EXPECTED, EXCEPTIONS);			\
	COMMON_TEST_CLEANUP;					\
      }								\
  while (0)
#define RUN_TEST_LOOP_2_f(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_2_f ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg1,	\
		    (ARRAY)[i].arg2, (ARRAY)[i].expected,		\
		    (ARRAY)[i].exceptions);				\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_ff_f RUN_TEST_2_f
#define RUN_TEST_LOOP_ff_f RUN_TEST_LOOP_2_f
#define RUN_TEST_fi_f RUN_TEST_2_f
#define RUN_TEST_LOOP_fi_f RUN_TEST_LOOP_2_f
#define RUN_TEST_fl_f RUN_TEST_2_f
#define RUN_TEST_LOOP_fl_f RUN_TEST_LOOP_2_f
#define RUN_TEST_if_f RUN_TEST_2_f
#define RUN_TEST_LOOP_if_f RUN_TEST_LOOP_2_f
#define RUN_TEST_fff_f(ARG_STR, FUNC_NAME, ARG1, ARG2, ARG3,		\
		       EXPECTED, EXCEPTIONS)				\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_float (test_name, FUNC (FUNC_NAME) (ARG1, ARG2, ARG3),	\
		     EXPECTED, EXCEPTIONS);				\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_fff_f(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_fff_f ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg1,	\
		      (ARRAY)[i].arg2, (ARRAY)[i].arg3,			\
		      (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_c_f(ARG_STR, FUNC_NAME, ARG1, ARG2, EXPECTED,		\
		     EXCEPTIONS)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_float (test_name,						\
		     FUNC (FUNC_NAME) (BUILD_COMPLEX (ARG1, ARG2)),	\
		     EXPECTED, EXCEPTIONS);				\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_c_f(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_c_f ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].argr,	\
		    (ARRAY)[i].argc, (ARRAY)[i].expected,		\
		    (ARRAY)[i].exceptions);				\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_f_f1(ARG_STR, FUNC_NAME, ARG, EXPECTED,		\
		      EXCEPTIONS, EXTRA_VAR, EXTRA_TEST,		\
		      EXTRA_EXPECTED)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	(EXTRA_VAR) = (EXTRA_EXPECTED) == 0 ? 1 : 0;			\
	check_float (test_name, FUNC (FUNC_NAME) (ARG), EXPECTED,	\
		     EXCEPTIONS);					\
	EXTRA_OUTPUT_TEST_SETUP (ARG_STR, 1);				\
	if (EXTRA_TEST)							\
	  check_int (extra1_name, EXTRA_VAR, EXTRA_EXPECTED, 0);	\
	EXTRA_OUTPUT_TEST_CLEANUP (1);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_f1(FUNC_NAME, ARRAY, ROUNDING_MODE, EXTRA_VAR)	\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_f1 ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		     (ARRAY)[i].expected, (ARRAY)[i].exceptions,	\
		     EXTRA_VAR, (ARRAY)[i].extra_test,			\
		     (ARRAY)[i].extra_expected);			\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_fF_f1(ARG_STR, FUNC_NAME, ARG, EXPECTED,		\
		       EXCEPTIONS, EXTRA_VAR, EXTRA_TEST,		\
		       EXTRA_EXPECTED)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	(EXTRA_VAR) = (EXTRA_EXPECTED) == 0 ? 1 : 0;			\
	check_float (test_name, FUNC (FUNC_NAME) (ARG, &(EXTRA_VAR)),	\
		     EXPECTED, EXCEPTIONS);				\
	EXTRA_OUTPUT_TEST_SETUP (ARG_STR, 1);				\
	if (EXTRA_TEST)							\
	  check_float (extra1_name, EXTRA_VAR, EXTRA_EXPECTED, 0);	\
	EXTRA_OUTPUT_TEST_CLEANUP (1);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_fF_f1(FUNC_NAME, ARRAY, ROUNDING_MODE, EXTRA_VAR)	\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_fF_f1 ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		      (ARRAY)[i].expected, (ARRAY)[i].exceptions,	\
		      EXTRA_VAR, (ARRAY)[i].extra_test,			\
		      (ARRAY)[i].extra_expected);			\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_fI_f1(ARG_STR, FUNC_NAME, ARG, EXPECTED,		\
		       EXCEPTIONS, EXTRA_VAR, EXTRA_TEST,		\
		       EXTRA_EXPECTED)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	(EXTRA_VAR) = (EXTRA_EXPECTED) == 0 ? 1 : 0;			\
	check_float (test_name, FUNC (FUNC_NAME) (ARG, &(EXTRA_VAR)),	\
		     EXPECTED, EXCEPTIONS);				\
	EXTRA_OUTPUT_TEST_SETUP (ARG_STR, 1);				\
	if (EXTRA_TEST)							\
	  check_int (extra1_name, EXTRA_VAR, EXTRA_EXPECTED, 0);	\
	EXTRA_OUTPUT_TEST_CLEANUP (1);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_fI_f1(FUNC_NAME, ARRAY, ROUNDING_MODE, EXTRA_VAR)	\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_fI_f1 ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		      (ARRAY)[i].expected, (ARRAY)[i].exceptions,	\
		      EXTRA_VAR, (ARRAY)[i].extra_test,			\
		      (ARRAY)[i].extra_expected);			\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_ffI_f1_mod8(ARG_STR, FUNC_NAME, ARG1, ARG2, EXPECTED, \
                             EXCEPTIONS, EXTRA_VAR, EXTRA_TEST,        \
                             EXTRA_EXPECTED)                           \
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	(EXTRA_VAR) = (EXTRA_EXPECTED) == 0 ? 1 : 0;			\
	check_float (test_name,						\
		     FUNC (FUNC_NAME) (ARG1, ARG2, &(EXTRA_VAR)),	\
		     EXPECTED, EXCEPTIONS);				\
	EXTRA_OUTPUT_TEST_SETUP (ARG_STR, 1);				\
	if (EXTRA_TEST)							\
	  check_int (extra1_name, (EXTRA_VAR) % 8, EXTRA_EXPECTED, 0);	\
	EXTRA_OUTPUT_TEST_CLEANUP (1);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_ffI_f1_mod8(FUNC_NAME, ARRAY, ROUNDING_MODE,     \
                                 EXTRA_VAR)                            \
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	   \
      RUN_TEST_ffI_f1_mod8 ((ARRAY)[i].arg_str, FUNC_NAME,             \
                           (ARRAY)[i].arg1, (ARRAY)[i].arg2,           \
                           (ARRAY)[i].expected, (ARRAY)[i].exceptions, \
                           EXTRA_VAR, (ARRAY)[i].extra_test,           \
                           (ARRAY)[i].extra_expected);                 \
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_c_c(ARG_STR, FUNC_NAME, ARGR, ARGC, EXPR, EXPC,	\
		     EXCEPTIONS)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_complex (test_name,					\
		       FUNC (FUNC_NAME) (BUILD_COMPLEX (ARGR, ARGC)),	\
		       BUILD_COMPLEX (EXPR, EXPC), EXCEPTIONS);		\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_c_c(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_c_c ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].argr,	\
		    (ARRAY)[i].argc, (ARRAY)[i].expr, (ARRAY)[i].expc,	\
		    (ARRAY)[i].exceptions);				\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_cc_c(ARG_STR, FUNC_NAME, ARG1R, ARG1C, ARG2R, ARG2C,	\
		      EXPR, EXPC, EXCEPTIONS)				\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_complex (test_name,					\
		       FUNC (FUNC_NAME) (BUILD_COMPLEX (ARG1R, ARG1C),	\
					 BUILD_COMPLEX (ARG2R, ARG2C)),	\
		       BUILD_COMPLEX (EXPR, EXPC), EXCEPTIONS);		\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_cc_c(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_cc_c ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg1r,	\
		     (ARRAY)[i].arg1c, (ARRAY)[i].arg2r,		\
		     (ARRAY)[i].arg2c, (ARRAY)[i].expr,			\
		     (ARRAY)[i].expc, (ARRAY)[i].exceptions);		\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_f_i(ARG_STR, FUNC_NAME, ARG, EXPECTED, EXCEPTIONS)	\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_int (test_name, FUNC (FUNC_NAME) (ARG), EXPECTED,		\
		   EXCEPTIONS);						\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_i(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_i ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		    (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_f_i_tg(ARG_STR, FUNC_NAME, ARG, EXPECTED,		\
			EXCEPTIONS)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_int (test_name, FUNC_NAME (ARG), EXPECTED, EXCEPTIONS);	\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_i_tg(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_i_tg ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		       (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_ff_i_tg(ARG_STR, FUNC_NAME, ARG1, ARG2, EXPECTED,	\
			 EXCEPTIONS)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_int (test_name, FUNC_NAME (ARG1, ARG2), EXPECTED,		\
		   EXCEPTIONS);						\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_ff_i_tg(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_ff_i_tg ((ARRAY)[i].arg_str, FUNC_NAME,		\
			(ARRAY)[i].arg1, (ARRAY)[i].arg2,		\
			(ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_f_b(ARG_STR, FUNC_NAME, ARG, EXPECTED, EXCEPTIONS)	\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_bool (test_name, FUNC (FUNC_NAME) (ARG), EXPECTED,	\
		    EXCEPTIONS);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_b(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_b ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		    (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_f_b_tg(ARG_STR, FUNC_NAME, ARG, EXPECTED,		\
			EXCEPTIONS)					\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_bool (test_name, FUNC_NAME (ARG), EXPECTED, EXCEPTIONS);	\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_b_tg(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_b_tg ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		       (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_f_l(ARG_STR, FUNC_NAME, ARG, EXPECTED, EXCEPTIONS)	\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_long (test_name, FUNC (FUNC_NAME) (ARG), EXPECTED,	\
		    EXCEPTIONS);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_l(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_l ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		    (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_f_L(ARG_STR, FUNC_NAME, ARG, EXPECTED, EXCEPTIONS)	\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	check_longlong (test_name, FUNC (FUNC_NAME) (ARG), EXPECTED,	\
			EXCEPTIONS);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_f_L(FUNC_NAME, ARRAY, ROUNDING_MODE)		\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_f_L ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		    (ARRAY)[i].expected, (ARRAY)[i].exceptions);	\
  ROUND_RESTORE_ ## ROUNDING_MODE
#define RUN_TEST_fFF_11(ARG_STR, FUNC_NAME, ARG, EXCEPTIONS,		\
			EXTRA1_VAR, EXTRA1_TEST,			\
			EXTRA1_EXPECTED, EXTRA2_VAR,			\
			EXTRA2_TEST, EXTRA2_EXPECTED)			\
  do									\
    if (enable_test (EXCEPTIONS))					\
      {									\
	COMMON_TEST_SETUP (ARG_STR);					\
	FUNC (FUNC_NAME) (ARG, &(EXTRA1_VAR), &(EXTRA2_VAR));		\
	EXTRA_OUTPUT_TEST_SETUP (ARG_STR, 1);				\
	if (EXTRA1_TEST)						\
	  check_float (extra1_name, EXTRA1_VAR, EXTRA1_EXPECTED,	\
		       EXCEPTIONS);					\
	EXTRA_OUTPUT_TEST_CLEANUP (1);					\
	EXTRA_OUTPUT_TEST_SETUP (ARG_STR, 2);				\
	if (EXTRA2_TEST)						\
	  check_float (extra2_name, EXTRA2_VAR, EXTRA2_EXPECTED, 0);	\
	EXTRA_OUTPUT_TEST_CLEANUP (2);					\
	COMMON_TEST_CLEANUP;						\
      }									\
  while (0)
#define RUN_TEST_LOOP_fFF_11(FUNC_NAME, ARRAY, ROUNDING_MODE,		\
			     EXTRA1_VAR, EXTRA2_VAR)			\
  IF_ROUND_INIT_ ## ROUNDING_MODE					\
    for (size_t i = 0; i < sizeof (ARRAY) / sizeof (ARRAY)[0]; i++)	\
      RUN_TEST_fFF_11 ((ARRAY)[i].arg_str, FUNC_NAME, (ARRAY)[i].arg,	\
		       (ARRAY)[i].exceptions,				\
		       EXTRA1_VAR, (ARRAY)[i].extra1_test,		\
		       (ARRAY)[i].extra1_expected,			\
		       EXTRA2_VAR,					\
		       (ARRAY)[i].extra2_test,				\
		       (ARRAY)[i].extra2_expected);			\
  ROUND_RESTORE_ ## ROUNDING_MODE

/* Start and end the tests for a given function.  */
#define START(FUNC)				\
  const char *this_func = #FUNC;		\
  init_max_error ()
#define END					\
  print_max_error (this_func)
#define END_COMPLEX				\
  print_complex_max_error (this_func)

/* This is to prevent messages from the SVID libm emulation.  */
int
matherr (struct exception *x __attribute__ ((unused)))
{
  return 1;
}


/****************************************************************************
  Tests for single functions of libm.
  Please keep them alphabetically sorted!
****************************************************************************/

static const struct test_f_f_data acos_test_data[] =
  {
    TEST_f_f (acos, plus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acos, minus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acos, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),

    /* |x| > 1: */
    TEST_f_f (acos, 1.125L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acos, -1.125L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acos, max_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acos, -max_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),

    AUTO_TESTS_f_f (acos, tonearest),
  };

static void
acos_test (void)
{
  START (acos);
  RUN_TEST_LOOP_f_f (acos, acos_test_data, );
  END;
}


static const struct test_f_f_data acos_tonearest_test_data[] =
  {
    AUTO_TESTS_f_f (acos, tonearest),
  };

static void
acos_test_tonearest (void)
{
  START (acos_tonearest);
  RUN_TEST_LOOP_f_f (acos, acos_tonearest_test_data, FE_TONEAREST);
  END;
}


static const struct test_f_f_data acos_towardzero_test_data[] =
  {
    AUTO_TESTS_f_f (acos, towardzero),
  };

static void
acos_test_towardzero (void)
{
  START (acos_towardzero);
  RUN_TEST_LOOP_f_f (acos, acos_towardzero_test_data, FE_TOWARDZERO);
  END;
}


static const struct test_f_f_data acos_downward_test_data[] =
  {
    AUTO_TESTS_f_f (acos, downward),
  };

static void
acos_test_downward (void)
{
  START (acos_downward);
  RUN_TEST_LOOP_f_f (acos, acos_downward_test_data, FE_DOWNWARD);
  END;
}


static const struct test_f_f_data acos_upward_test_data[] =
  {
    AUTO_TESTS_f_f (acos, upward),
  };

static void
acos_test_upward (void)
{
  START (acos_upward);
  RUN_TEST_LOOP_f_f (acos, acos_upward_test_data, FE_UPWARD);
  END;
}

static const struct test_f_f_data acosh_test_data[] =
  {
    TEST_f_f (acosh, plus_infty, plus_infty),
    TEST_f_f (acosh, minus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),

    /* x < 1:  */
    TEST_f_f (acosh, 0.75L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, min_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, min_subnorm_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, plus_zero, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, minus_zero, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, -min_subnorm_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, -min_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, -1.125L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (acosh, -max_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),

    AUTO_TESTS_f_f (acosh, tonearest),
  };

static void
acosh_test (void)
{
  START (acosh);
  RUN_TEST_LOOP_f_f (acosh, acosh_test_data, );
  END;
}

static const struct test_f_f_data asin_test_data[] =
  {
    TEST_f_f (asin, plus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (asin, minus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (asin, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),

    /* asin x == qNaN plus invalid exception for |x| > 1.  */
    TEST_f_f (asin, 1.125L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (asin, -1.125L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (asin, max_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (asin, -max_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),

    AUTO_TESTS_f_f (asin, tonearest),
  };

static void
asin_test (void)
{
  START (asin);
  RUN_TEST_LOOP_f_f (asin, asin_test_data, );
  END;
}


static const struct test_f_f_data asin_tonearest_test_data[] =
  {
    AUTO_TESTS_f_f (asin, tonearest),
  };

static void
asin_test_tonearest (void)
{
  START (asin_tonearest);
  RUN_TEST_LOOP_f_f (asin, asin_tonearest_test_data, FE_TONEAREST);
  END;
}


static const struct test_f_f_data asin_towardzero_test_data[] =
  {
    AUTO_TESTS_f_f (asin, towardzero),
  };

static void
asin_test_towardzero (void)
{
  START (asin_towardzero);
  RUN_TEST_LOOP_f_f (asin, asin_towardzero_test_data, FE_TOWARDZERO);
  END;
}


static const struct test_f_f_data asin_downward_test_data[] =
  {
    AUTO_TESTS_f_f (asin, downward),
  };

static void
asin_test_downward (void)
{
  START (asin_downward);
  RUN_TEST_LOOP_f_f (asin, asin_downward_test_data, FE_DOWNWARD);
  END;
}


static const struct test_f_f_data asin_upward_test_data[] =
  {
    AUTO_TESTS_f_f (asin, upward),
  };

static void
asin_test_upward (void)
{
  START (asin_upward);
  RUN_TEST_LOOP_f_f (asin, asin_upward_test_data, FE_UPWARD);
  END;
}

static const struct test_f_f_data asinh_test_data[] =
  {
    TEST_f_f (asinh, plus_infty, plus_infty, NO_TEST_INLINE),
    TEST_f_f (asinh, minus_infty, minus_infty, NO_TEST_INLINE),
    TEST_f_f (asinh, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
    AUTO_TESTS_f_f (asinh, tonearest),
  };

static void
asinh_test (void)
{
  START (asinh);
  RUN_TEST_LOOP_f_f (asinh, asinh_test_data, );
  END;
}

static const struct test_f_f_data atan_test_data[] =
  {
    TEST_f_f (atan, plus_infty, M_PI_2l),
    TEST_f_f (atan, minus_infty, -M_PI_2l),
    TEST_f_f (atan, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),

    AUTO_TESTS_f_f (atan, tonearest),
  };

static void
atan_test (void)
{
  START (atan);
  RUN_TEST_LOOP_f_f (atan, atan_test_data, );
  END;
}



static const struct test_f_f_data atanh_test_data[] =
  {
    TEST_f_f (atanh, 1, plus_infty, DIVIDE_BY_ZERO_EXCEPTION|ERRNO_ERANGE),
    TEST_f_f (atanh, -1, minus_infty, DIVIDE_BY_ZERO_EXCEPTION|ERRNO_ERANGE),
    TEST_f_f (atanh, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),

    /* atanh (x) == qNaN plus invalid exception if |x| > 1.  */
    TEST_f_f (atanh, 1.125L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (atanh, -1.125L, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (atanh, max_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (atanh, -max_value, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (atanh, plus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
    TEST_f_f (atanh, minus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),

    AUTO_TESTS_f_f (atanh, tonearest),
  };

static void
atanh_test (void)
{
  START (atanh);
  RUN_TEST_LOOP_f_f (atanh, atanh_test_data, );
  END;
}

static const struct test_ff_f_data atan2_test_data[] =
  {
    /* atan2 (y,inf) == +0 for finite y > 0.  */
    TEST_ff_f (atan2, 1, plus_infty, 0),

    /* atan2 (y,inf) == -0 for finite y < 0.  */
    TEST_ff_f (atan2, -1, plus_infty, minus_zero),

    /* atan2(+inf, x) == pi/2 for finite x.  */
    TEST_ff_f (atan2, plus_infty, -1, M_PI_2l),

    /* atan2(-inf, x) == -pi/2 for finite x.  */
    TEST_ff_f (atan2, minus_infty, 1, -M_PI_2l),

    /* atan2 (y,-inf) == +pi for finite y > 0.  */
    TEST_ff_f (atan2, 1, minus_infty, M_PIl),

    /* atan2 (y,-inf) == -pi for finite y < 0.  */
    TEST_ff_f (atan2, -1, minus_infty, -M_PIl),

    TEST_ff_f (atan2, plus_infty, plus_infty, M_PI_4l),
    TEST_ff_f (atan2, minus_infty, plus_infty, -M_PI_4l),
    TEST_ff_f (atan2, plus_infty, minus_infty, M_PI_34l),
    TEST_ff_f (atan2, minus_infty, minus_infty, -M_PI_34l),
    TEST_ff_f (atan2, qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),

    AUTO_TESTS_ff_f (atan2, tonearest),
  };

static void
atan2_test (void)
{
  START (atan2);
  RUN_TEST_LOOP_ff_f (atan2, atan2_test_data, );
  END;
}

static const struct test_c_f_data cabs_test_data[] =
  {
    /* cabs (x + iy) is specified as hypot (x,y) */

    /* cabs (+inf + i x) == +inf.  */
    TEST_c_f (cabs, plus_infty, 1.0, plus_infty),
    /* cabs (-inf + i x) == +inf.  */
    TEST_c_f (cabs, minus_infty, 1.0, plus_infty),

    TEST_c_f (cabs, minus_infty, qnan_value, plus_infty),
    TEST_c_f (cabs, minus_infty, qnan_value, plus_infty),

    TEST_c_f (cabs, qnan_value, qnan_value, qnan_value),

    AUTO_TESTS_c_f (cabs, tonearest),
  };

static void
cabs_test (void)
{
  START (cabs);
  RUN_TEST_LOOP_c_f (cabs, cabs_test_data, );
  END;
}


static const struct test_c_c_data cacos_test_data[] =
  {
    TEST_c_c (cacos, 0, 0, M_PI_2l, minus_zero),
    TEST_c_c (cacos, minus_zero, 0, M_PI_2l, minus_zero),
    TEST_c_c (cacos, minus_zero, minus_zero, M_PI_2l, 0.0),
    TEST_c_c (cacos, 0, minus_zero, M_PI_2l, 0.0),

    TEST_c_c (cacos, minus_infty, plus_infty, M_PI_34l, minus_infty),
    TEST_c_c (cacos, minus_infty, minus_infty, M_PI_34l, plus_infty),

    TEST_c_c (cacos, plus_infty, plus_infty, M_PI_4l, minus_infty),
    TEST_c_c (cacos, plus_infty, minus_infty, M_PI_4l, plus_infty),

    TEST_c_c (cacos, -10.0, plus_infty, M_PI_2l, minus_infty),
    TEST_c_c (cacos, -10.0, minus_infty, M_PI_2l, plus_infty),
    TEST_c_c (cacos, 0, plus_infty, M_PI_2l, minus_infty),
    TEST_c_c (cacos, 0, minus_infty, M_PI_2l, plus_infty),
    TEST_c_c (cacos, 0.1L, plus_infty, M_PI_2l, minus_infty),
    TEST_c_c (cacos, 0.1L, minus_infty, M_PI_2l, plus_infty),

    TEST_c_c (cacos, minus_infty, 0, M_PIl, minus_infty),
    TEST_c_c (cacos, minus_infty, minus_zero, M_PIl, plus_infty),
    TEST_c_c (cacos, minus_infty, 100, M_PIl, minus_infty),
    TEST_c_c (cacos, minus_infty, -100, M_PIl, plus_infty),

    TEST_c_c (cacos, plus_infty, 0, 0.0, minus_infty),
    TEST_c_c (cacos, plus_infty, minus_zero, 0.0, plus_infty),
    TEST_c_c (cacos, plus_infty, 0.5, 0.0, minus_infty),
    TEST_c_c (cacos, plus_infty, -0.5, 0.0, plus_infty),

    TEST_c_c (cacos, plus_infty, qnan_value, qnan_value, plus_infty, IGNORE_ZERO_INF_SIGN),
    TEST_c_c (cacos, minus_infty, qnan_value, qnan_value, plus_infty, IGNORE_ZERO_INF_SIGN),

    TEST_c_c (cacos, 0, qnan_value, M_PI_2l, qnan_value),
    TEST_c_c (cacos, minus_zero, qnan_value, M_PI_2l, qnan_value),

    TEST_c_c (cacos, qnan_value, plus_infty, qnan_value, minus_infty),
    TEST_c_c (cacos, qnan_value, minus_infty, qnan_value, plus_infty),

    TEST_c_c (cacos, 10.5, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
    TEST_c_c (cacos, -10.5, qnan_value, qnan_value, qnan_value, INVALID_EXCEPTION_OK),

    TEST_c_c (cacos, qnan_value, 0.75, qnan_value, qnan_value, INVALID_EXCEPTION_OK),
    TEST_c_c (cacos, qnan_value, -0.75, qnan_value, qnan_value, INVALID_EXCEPTION_OK),

    TEST_c_c (cacos, qnan_value, qnan_value, qnan_value, qnan_value),

    TEST_c_c (cacos, plus_zero, -1.5L, M_PI_2l, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, minus_zero, -1.5L, M_PI_2l, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, plus_zero, -1.0L, M_PI_2l, 0.8813735870195430252326093249797923090282L),
    TEST_c_c (cacos, minus_zero, -1.0L, M_PI_2l, 0.8813735870195430252326093249797923090282L),
    TEST_c_c (cacos, plus_zero, -0.5L, M_PI_2l, 0.4812118250596034474977589134243684231352L),
    TEST_c_c (cacos, minus_zero, -0.5L, M_PI_2l, 0.4812118250596034474977589134243684231352L),
    TEST_c_c (cacos, plus_zero, 0.5L, M_PI_2l, -0.4812118250596034474977589134243684231352L),
    TEST_c_c (cacos, minus_zero, 0.5L, M_PI_2l, -0.4812118250596034474977589134243684231352L),
    TEST_c_c (cacos, plus_zero, 1.0L, M_PI_2l, -0.8813735870195430252326093249797923090282L),
    TEST_c_c (cacos, minus_zero, 1.0L, M_PI_2l, -0.8813735870195430252326093249797923090282L),
    TEST_c_c (cacos, plus_zero, 1.5L, M_PI_2l, -1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, minus_zero, 1.5L, M_PI_2l, -1.194763217287109304111930828519090523536L),

    TEST_c_c (cacos, -1.5L, plus_zero, M_PIl, -0.9624236501192068949955178268487368462704L),
    TEST_c_c (cacos, -1.5L, minus_zero, M_PIl, 0.9624236501192068949955178268487368462704L),
    TEST_c_c (cacos, -1.0L, plus_zero, M_PIl, minus_zero),
    TEST_c_c (cacos, -1.0L, minus_zero, M_PIl, plus_zero),
    TEST_c_c (cacos, -0.5L, plus_zero, 2.094395102393195492308428922186335256131L, minus_zero),
    TEST_c_c (cacos, -0.5L, minus_zero, 2.094395102393195492308428922186335256131L, plus_zero),
    TEST_c_c (cacos, 0.5L, plus_zero, 1.047197551196597746154214461093167628066L, minus_zero),
    TEST_c_c (cacos, 0.5L, minus_zero, 1.047197551196597746154214461093167628066L, plus_zero),
    TEST_c_c (cacos, 1.0L, plus_zero, plus_zero, minus_zero),
    TEST_c_c (cacos, 1.0L, minus_zero, plus_zero, plus_zero),
    TEST_c_c (cacos, 1.5L, plus_zero, plus_zero, -0.9624236501192068949955178268487368462704L),
    TEST_c_c (cacos, 1.5L, minus_zero, plus_zero, 0.9624236501192068949955178268487368462704L),

    TEST_c_c (cacos, 0x1p50L, 1.0L, 8.881784197001252323389053344727730248720e-16L, -3.535050620855721078027883819436720218708e1L),
    TEST_c_c (cacos, 0x1p50L, -1.0L, 8.881784197001252323389053344727730248720e-16L, 3.535050620855721078027883819436720218708e1L),
    TEST_c_c (cacos, -0x1p50L, 1.0L, 3.141592653589792350284223683154270545292L, -3.535050620855721078027883819436720218708e1L),
    TEST_c_c (cacos, -0x1p50L, -1.0L, 3.141592653589792350284223683154270545292L, 3.535050620855721078027883819436720218708e1L),
    TEST_c_c (cacos, 1.0L, 0x1p50L, 1.570796326794895731052901991514519103193L, -3.535050620855721078027883819436759661753e1L),
    TEST_c_c (cacos, -1.0L, 0x1p50L, 1.570796326794897507409741391764983781004L, -3.535050620855721078027883819436759661753e1L),
    TEST_c_c (cacos, 1.0L, -0x1p50L, 1.570796326794895731052901991514519103193L, 3.535050620855721078027883819436759661753e1L),
    TEST_c_c (cacos, -1.0L, -0x1p50L, 1.570796326794897507409741391764983781004L, 3.535050620855721078027883819436759661753e1L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1p500L, 1.0L, 3.054936363499604682051979393213617699789e-151L, -3.472667374605326000180332928505464606058e2L),
    TEST_c_c (cacos, 0x1p500L, -1.0L, 3.054936363499604682051979393213617699789e-151L, 3.472667374605326000180332928505464606058e2L),
    TEST_c_c (cacos, -0x1p500L, 1.0L, 3.141592653589793238462643383279502884197L, -3.472667374605326000180332928505464606058e2L),
    TEST_c_c (cacos, -0x1p500L, -1.0L, 3.141592653589793238462643383279502884197L, 3.472667374605326000180332928505464606058e2L),
    TEST_c_c (cacos, 1.0L, 0x1p500L, 1.570796326794896619231321691639751442099L, -3.472667374605326000180332928505464606058e2L),
    TEST_c_c (cacos, -1.0L, 0x1p500L, 1.570796326794896619231321691639751442099L, -3.472667374605326000180332928505464606058e2L),
    TEST_c_c (cacos, 1.0L, -0x1p500L, 1.570796326794896619231321691639751442099L, 3.472667374605326000180332928505464606058e2L),
    TEST_c_c (cacos, -1.0L, -0x1p500L, 1.570796326794896619231321691639751442099L, 3.472667374605326000180332928505464606058e2L),
#endif
#if defined TEST_LDOUBLE && LDBL_MAX_EXP >= 16384
    TEST_c_c (cacos, 0x1p5000L, 1.0L, 7.079811261048172892385615158694057552948e-1506L, -3.466429049980286492395577839412341016946e3L),
    TEST_c_c (cacos, 0x1p5000L, -1.0L, 7.079811261048172892385615158694057552948e-1506L, 3.466429049980286492395577839412341016946e3L),
    TEST_c_c (cacos, -0x1p5000L, 1.0L, 3.141592653589793238462643383279502884197L, -3.466429049980286492395577839412341016946e3L),
    TEST_c_c (cacos, -0x1p5000L, -1.0L, 3.141592653589793238462643383279502884197L, 3.466429049980286492395577839412341016946e3L),
    TEST_c_c (cacos, 1.0L, 0x1p5000L, 1.570796326794896619231321691639751442099L, -3.466429049980286492395577839412341016946e3L),
    TEST_c_c (cacos, -1.0L, 0x1p5000L, 1.570796326794896619231321691639751442099L, -3.466429049980286492395577839412341016946e3L),
    TEST_c_c (cacos, 1.0L, -0x1p5000L, 1.570796326794896619231321691639751442099L, 3.466429049980286492395577839412341016946e3L),
    TEST_c_c (cacos, -1.0L, -0x1p5000L, 1.570796326794896619231321691639751442099L, 3.466429049980286492395577839412341016946e3L),
#endif

    TEST_c_c (cacos, 0x1.fp127L, 0x1.fp127L, 7.853981633974483096156608458198757210493e-1L, -8.973081118419833726837456344608533993585e1L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1.fp1023L, 0x1.fp1023L, 7.853981633974483096156608458198757210493e-1L, -7.107906849659093345062145442726115449315e2L),
#endif
#if defined TEST_LDOUBLE && LDBL_MAX_EXP >= 16384
    TEST_c_c (cacos, 0x1.fp16383L, 0x1.fp16383L, 7.853981633974483096156608458198757210493e-1L, -1.135753137836666928715489992987020363057e4L),
#endif

    TEST_c_c (cacos, 0x1.fp-129L, 1.5L, 1.570796326794896619231321691639751442097L, -1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, 0x1.fp-129L, -1.5L, 1.570796326794896619231321691639751442097L, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, -0x1.fp-129L, 1.5L, 1.570796326794896619231321691639751442100L, -1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, -0x1.fp-129L, -1.5L, 1.570796326794896619231321691639751442100L, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, 1.5L, 0x1.fp-129L, 2.546345110742945032959687790021055102355e-39L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -1.5L, 0x1.fp-129L, 3.141592653589793238462643383279502884195L, -9.624236501192068949955178268487368462704e-1L),
    TEST_c_c (cacos, 1.5L, -0x1.fp-129L, 2.546345110742945032959687790021055102355e-39L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -1.5L, -0x1.fp-129L, 3.141592653589793238462643383279502884195L, 9.624236501192068949955178268487368462704e-1L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1.fp-1025L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, 0x1.fp-1025L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, -0x1.fp-1025L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, -0x1.fp-1025L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, 1.5L, 0x1.fp-1025L, 4.819934639999230680322935210539402497827e-309L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -1.5L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -9.624236501192068949955178268487368462704e-1L),
    TEST_c_c (cacos, 1.5L, -0x1.fp-1025L, 4.819934639999230680322935210539402497827e-309L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -1.5L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 9.624236501192068949955178268487368462704e-1L),
#endif
#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
    TEST_c_c (cacos, 0x1.fp-16385L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, 0x1.fp-16385L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, -0x1.fp-16385L, 1.5L, 1.570796326794896619231321691639751442099L, -1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, -0x1.fp-16385L, -1.5L, 1.570796326794896619231321691639751442099L, 1.194763217287109304111930828519090523536L),
    TEST_c_c (cacos, 1.5L, 0x1.fp-16385L, 7.282957076134209141226696333885150260319e-4933L, -9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION),
    TEST_c_c (cacos, -1.5L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -9.624236501192068949955178268487368462704e-1L),
    TEST_c_c (cacos, 1.5L, -0x1.fp-16385L, 7.282957076134209141226696333885150260319e-4933L, 9.624236501192068949955178268487368462704e-1L, UNDERFLOW_EXCEPTION),
    TEST_c_c (cacos, -1.5L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 9.624236501192068949955178268487368462704e-1L),
#endif

    TEST_c_c (cacos, 0.5L, 1.0L, 1.221357263937683325603909865564381489366L, -9.261330313501824245501244453057873152694e-1L),
    TEST_c_c (cacos, 0.5L, -1.0L, 1.221357263937683325603909865564381489366L, 9.261330313501824245501244453057873152694e-1L),
    TEST_c_c (cacos, -0.5L, 1.0L, 1.920235389652109912858733517715121394831L, -9.261330313501824245501244453057873152694e-1L),
    TEST_c_c (cacos, -0.5L, -1.0L, 1.920235389652109912858733517715121394831L, 9.261330313501824245501244453057873152694e-1L),
    TEST_c_c (cacos, 1.0L, 0.5L, 6.748888455860063801646649673121744318756e-1L, -7.328576759736452608886724437653071523305e-1L),
    TEST_c_c (cacos, -1.0L, 0.5L, 2.466703808003786858297978415967328452322L, -7.328576759736452608886724437653071523305e-1L),
    TEST_c_c (cacos, 1.0L, -0.5L, 6.748888455860063801646649673121744318756e-1L, 7.328576759736452608886724437653071523305e-1L),
    TEST_c_c (cacos, -1.0L, -0.5L, 2.466703808003786858297978415967328452322L, 7.328576759736452608886724437653071523305e-1L),
    TEST_c_c (cacos, 0.25L, 1.0L, 1.394493894017929688812643125003661339452L, -8.924633639033482359562124741744951972772e-1L),
    TEST_c_c (cacos, 0.25L, -1.0L, 1.394493894017929688812643125003661339452L, 8.924633639033482359562124741744951972772e-1L),
    TEST_c_c (cacos, -0.25L, 1.0L, 1.747098759571863549650000258275841544745L, -8.924633639033482359562124741744951972772e-1L),
    TEST_c_c (cacos, -0.25L, -1.0L, 1.747098759571863549650000258275841544745L, 8.924633639033482359562124741744951972772e-1L),
    TEST_c_c (cacos, 1.0L, 0.25L, 4.890443302710802929202843732146540079124e-1L, -5.097911466811016354623559941115413499164e-1L),
    TEST_c_c (cacos, -1.0L, 0.25L, 2.652548323318712945542359010064848876285L, -5.097911466811016354623559941115413499164e-1L),
    TEST_c_c (cacos, 1.0L, -0.25L, 4.890443302710802929202843732146540079124e-1L, 5.097911466811016354623559941115413499164e-1L),
    TEST_c_c (cacos, -1.0L, -0.25L, 2.652548323318712945542359010064848876285L, 5.097911466811016354623559941115413499164e-1L),
    TEST_c_c (cacos, 0x1.fp-10L, 1.0L, 1.569458417435338878318763342108699202986L, -8.813742198809567991336704287826445879025e-1L),
    TEST_c_c (cacos, 0x1.fp-10L, -1.0L, 1.569458417435338878318763342108699202986L, 8.813742198809567991336704287826445879025e-1L),
    TEST_c_c (cacos, -0x1.fp-10L, 1.0L, 1.572134236154454360143880041170803681211L, -8.813742198809567991336704287826445879025e-1L),
    TEST_c_c (cacos, -0x1.fp-10L, -1.0L, 1.572134236154454360143880041170803681211L, 8.813742198809567991336704287826445879025e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-10L, 4.349129763101882771258049954181971959031e-2L, -4.350501469856803800217957402220976497152e-2L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-10L, 3.098101355958774410750062883737683164607L, -4.350501469856803800217957402220976497152e-2L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-10L, 4.349129763101882771258049954181971959031e-2L, 4.350501469856803800217957402220976497152e-2L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-10L, 3.098101355958774410750062883737683164607L, 4.350501469856803800217957402220976497152e-2L),
    TEST_c_c (cacos, 0x1.fp-30L, 1.0L, 1.570796325518966635014803151387033957091L, -8.813735870195430258081932989769495326854e-1L),
    TEST_c_c (cacos, 0x1.fp-30L, -1.0L, 1.570796325518966635014803151387033957091L, 8.813735870195430258081932989769495326854e-1L),
    TEST_c_c (cacos, -0x1.fp-30L, 1.0L, 1.570796328070826603447840231892468927106L, -8.813735870195430258081932989769495326854e-1L),
    TEST_c_c (cacos, -0x1.fp-30L, -1.0L, 1.570796328070826603447840231892468927106L, 8.813735870195430258081932989769495326854e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-30L, 4.247867097467650115899790787875186617316e-5L, -4.247867098745151888768727039216644758847e-5L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-30L, 3.141550174918818561961484385371624132331L, -4.247867098745151888768727039216644758847e-5L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-30L, 4.247867097467650115899790787875186617316e-5L, 4.247867098745151888768727039216644758847e-5L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-30L, 3.141550174918818561961484385371624132331L, 4.247867098745151888768727039216644758847e-5L),
    TEST_c_c (cacos, 0x1.fp-100L, 1.0L, 1.570796326794896619231321691638670687364L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 0x1.fp-100L, -1.0L, 1.570796326794896619231321691638670687364L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-100L, 1.0L, 1.570796326794896619231321691640832196834L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-100L, -1.0L, 1.570796326794896619231321691640832196834L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-100L, 1.236292038260260888664514866456887257525e-15L, -1.236292038260260888664514866457202186027e-15L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-100L, 3.141592653589792002170605123018614219682L, -1.236292038260260888664514866457202186027e-15L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-100L, 1.236292038260260888664514866456887257525e-15L, 1.236292038260260888664514866457202186027e-15L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-100L, 3.141592653589792002170605123018614219682L, 1.236292038260260888664514866457202186027e-15L),
    TEST_c_c (cacos, 0x1.fp-129L, 1.0L, 1.570796326794896619231321691639751442097L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 0x1.fp-129L, -1.0L, 1.570796326794896619231321691639751442097L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, 1.0L, 1.570796326794896619231321691639751442101L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, -1.0L, 1.570796326794896619231321691639751442101L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-129L, 5.335635276982233498398987585285818977930e-20L, -5.335635276982233498398987585285818977933e-20L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-129L, 3.141592653589793238409287030509680549213L, -5.335635276982233498398987585285818977933e-20L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-129L, 5.335635276982233498398987585285818977930e-20L, 5.335635276982233498398987585285818977933e-20L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-129L, 3.141592653589793238409287030509680549213L, 5.335635276982233498398987585285818977933e-20L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1.fp-1000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 0x1.fp-1000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-1000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-1000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-1000L, 4.252291453851660175550490409247739011867e-151L, -4.252291453851660175550490409247739011867e-151L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-1000L, 3.141592653589793238462643383279502884197L, -4.252291453851660175550490409247739011867e-151L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-1000L, 4.252291453851660175550490409247739011867e-151L, 4.252291453851660175550490409247739011867e-151L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-1000L, 3.141592653589793238462643383279502884197L, 4.252291453851660175550490409247739011867e-151L),
    TEST_c_c (cacos, 0x1.fp-1025L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 0x1.fp-1025L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-1025L, 7.340879205566679497036857179189356754017e-155L, -7.340879205566679497036857179189356754017e-155L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -7.340879205566679497036857179189356754017e-155L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-1025L, 7.340879205566679497036857179189356754017e-155L, 7.340879205566679497036857179189356754017e-155L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 7.340879205566679497036857179189356754017e-155L),
#endif
#if defined TEST_LDOUBLE && LDBL_MIN_EXP <= -16381
    TEST_c_c (cacos, 0x1.fp-10000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 0x1.fp-10000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-10000L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-10000L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-10000L, 9.854680208706673586644342922051388714633e-1506L, -9.854680208706673586644342922051388714633e-1506L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-10000L, 3.141592653589793238462643383279502884197L, -9.854680208706673586644342922051388714633e-1506L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-10000L, 9.854680208706673586644342922051388714633e-1506L, 9.854680208706673586644342922051388714633e-1506L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-10000L, 3.141592653589793238462643383279502884197L, 9.854680208706673586644342922051388714633e-1506L),
    TEST_c_c (cacos, 0x1.fp-16385L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 0x1.fp-16385L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, 1.0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, -1.0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797923090282e-1L),
    TEST_c_c (cacos, 1.0L, 0x1.fp-16385L, 9.023632056840860275214893047597614177639e-2467L, -9.023632056840860275214893047597614177639e-2467L),
    TEST_c_c (cacos, -1.0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -9.023632056840860275214893047597614177639e-2467L),
    TEST_c_c (cacos, 1.0L, -0x1.fp-16385L, 9.023632056840860275214893047597614177639e-2467L, 9.023632056840860275214893047597614177639e-2467L),
    TEST_c_c (cacos, -1.0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 9.023632056840860275214893047597614177639e-2467L),
#endif

    TEST_c_c (cacos, 0x1p-23L, 0x1.000002p0L, 1.570796242501204621739026081991856762292L, -8.813736713132400470205730751186547909968e-1L),
    TEST_c_c (cacos, 0x1p-23L, -0x1.000002p0L, 1.570796242501204621739026081991856762292L, 8.813736713132400470205730751186547909968e-1L),
    TEST_c_c (cacos, -0x1p-23L, 0x1.000002p0L, 1.570796411088588616723617301287646121905L, -8.813736713132400470205730751186547909968e-1L),
    TEST_c_c (cacos, -0x1p-23L, -0x1.000002p0L, 1.570796411088588616723617301287646121905L, 8.813736713132400470205730751186547909968e-1L),
    TEST_c_c (cacos, 0x1.000002p0L, 0x1p-23L, 2.222118384408546368406374049167636760903e-4L, -5.364668491573609633134147164031476452679e-4L),
    TEST_c_c (cacos, -0x1.000002p0L, 0x1p-23L, 3.141370441751352383825802745874586120521L, -5.364668491573609633134147164031476452679e-4L),
    TEST_c_c (cacos, 0x1.000002p0L, -0x1p-23L, 2.222118384408546368406374049167636760903e-4L, 5.364668491573609633134147164031476452679e-4L),
    TEST_c_c (cacos, -0x1.000002p0L, -0x1p-23L, 3.141370441751352383825802745874586120521L, 5.364668491573609633134147164031476452679e-4L),
    TEST_c_c (cacos, 0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442097L, -8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, 0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442097L, 8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, 0x1.000002p0L, 1.570796326794896619231321691639751442101L, -8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, -0x1.000002p0L, 1.570796326794896619231321691639751442101L, 8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, 0x1.000002p0L, 0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, -4.882812451493617206486388134172712975070e-4L),
    TEST_c_c (cacos, -0x1.000002p0L, 0x1.fp-129L, 3.141592653589793238462643383279502878367L, -4.882812451493617206486388134172712975070e-4L),
    TEST_c_c (cacos, 0x1.000002p0L, -0x1.fp-129L, 5.830451806317544230969669308596361881467e-36L, 4.882812451493617206486388134172712975070e-4L),
    TEST_c_c (cacos, -0x1.000002p0L, -0x1.fp-129L, 3.141592653589793238462643383279502878367L, 4.882812451493617206486388134172712975070e-4L),
    TEST_c_c (cacos, 0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, 0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, -0.0L, 0x1.000002p0L, 1.570796326794896619231321691639751442099L, -8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, -0.0L, -0x1.000002p0L, 1.570796326794896619231321691639751442099L, 8.813736713132375348727889167749389235161e-1L),
    TEST_c_c (cacos, 0x1.000002p0L, 0.0L, 0.0L, -4.882812451493617206486388134172712975070e-4L),
    TEST_c_c (cacos, -0x1.000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.882812451493617206486388134172712975070e-4L),
    TEST_c_c (cacos, 0x1.000002p0L, -0.0L, 0.0L, 4.882812451493617206486388134172712975070e-4L),
    TEST_c_c (cacos, -0x1.000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.882812451493617206486388134172712975070e-4L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, -8.813735870195431822418551933572982483664e-1L),
    TEST_c_c (cacos, 0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896462222075823262262934288L, 8.813735870195431822418551933572982483664e-1L),
    TEST_c_c (cacos, -0x1p-52L, 0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, -8.813735870195431822418551933572982483664e-1L),
    TEST_c_c (cacos, -0x1p-52L, -0x1.0000000000001p0L, 1.570796326794896776240567560017239949909L, 8.813735870195431822418551933572982483664e-1L),
    TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1p-52L, 9.590301705980041385828904092662391018164e-9L, -2.315303644582684770975188768022139415020e-8L),
    TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1p-52L, 3.141592643999491532482601997450598791535L, -2.315303644582684770975188768022139415020e-8L),
    TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1p-52L, 9.590301705980041385828904092662391018164e-9L, 2.315303644582684770975188768022139415020e-8L),
    TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1p-52L, 3.141592643999491532482601997450598791535L, 2.315303644582684770975188768022139415020e-8L),
    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, 0x1.0000000000001p0L, 0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, -2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
    TEST_c_c (cacos, -0x1.0000000000001p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L),
    TEST_c_c (cacos, 0x1.0000000000001p0L, -0x1.fp-1025L, 2.557178503953494342609835913586108008322e-301L, 2.107342425544701550354780375182800088393e-8L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
    TEST_c_c (cacos, -0x1.0000000000001p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L),
    TEST_c_c (cacos, 0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, 0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, -0.0L, 0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, -0.0L, -0x1.0000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195431822418551933572895326024e-1L),
    TEST_c_c (cacos, 0x1.0000000000001p0L, 0.0L, 0.0L, -2.107342425544701550354780375182800088393e-8L),
    TEST_c_c (cacos, -0x1.0000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.107342425544701550354780375182800088393e-8L),
    TEST_c_c (cacos, 0x1.0000000000001p0L, -0.0L, 0.0L, 2.107342425544701550354780375182800088393e-8L),
    TEST_c_c (cacos, -0x1.0000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.107342425544701550354780375182800088393e-8L),
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
    TEST_c_c (cacos, 0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, -8.813735870195430253092739958139610131001e-1L),
    TEST_c_c (cacos, 0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619154657020805582738031L, 8.813735870195430253092739958139610131001e-1L),
    TEST_c_c (cacos, -0x1p-63L, 0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, -8.813735870195430253092739958139610131001e-1L),
    TEST_c_c (cacos, -0x1p-63L, -0x1.0000000000000002p0L, 1.570796326794896619307986362473920146166L, 8.813735870195430253092739958139610131001e-1L),
    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1p-63L, 2.119177303101063432592523199680782317447e-10L, -5.116146586219826555037807251857670783420e-10L),
    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1p-63L, 3.141592653377875508152537040020250564229L, -5.116146586219826555037807251857670783420e-10L),
    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1p-63L, 2.119177303101063432592523199680782317447e-10L, 5.116146586219826555037807251857670783420e-10L),
    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1p-63L, 3.141592653377875508152537040020250564229L, 5.116146586219826555037807251857670783420e-10L),
# if LDBL_MIN_EXP <= -16381
    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, -4.656612873077392578082927418388212703712e-10L),
    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L),
    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0x1.fp-16385L, 1.748608650034385653922359120438227480943e-4923L, 4.656612873077392578082927418388212703712e-10L),
    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L),
# endif
    TEST_c_c (cacos, 0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, 0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, -0.0L, 0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, -0.0L, -0x1.0000000000000002p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430253092739958139610130980e-1L),
    TEST_c_c (cacos, 0x1.0000000000000002p0L, 0.0L, 0.0L, -4.656612873077392578082927418388212703712e-10L),
    TEST_c_c (cacos, -0x1.0000000000000002p0L, 0.0L, 3.141592653589793238462643383279502884197L, -4.656612873077392578082927418388212703712e-10L),
    TEST_c_c (cacos, 0x1.0000000000000002p0L, -0.0L, 0.0L, 4.656612873077392578082927418388212703712e-10L),
    TEST_c_c (cacos, -0x1.0000000000000002p0L, -0.0L, 3.141592653589793238462643383279502884197L, 4.656612873077392578082927418388212703712e-10L),
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 106
    TEST_c_c (cacos, 0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, -8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, 0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639742726335L, 8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, -0x1p-106L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, -8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, -0x1p-106L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639760157863L, 8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1p-106L, 5.394221422390606848017034778914096659726e-17L, -2.285028863093221674154232933662774454211e-16L),
    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1p-106L, 3.141592653589793184520429159373434404027L, -2.285028863093221674154232933662774454211e-16L),
    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1p-106L, 5.394221422390606848017034778914096659726e-17L, 2.285028863093221674154232933662774454211e-16L),
    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1p-106L, 3.141592653589793184520429159373434404027L, 2.285028863093221674154232933662774454211e-16L),
    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, -2.220446049250313080847263336181636063482e-16L),
    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0x1.fp-1025L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L),
    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 2.426922623448365473354662093431821897807e-293L, 2.220446049250313080847263336181636063482e-16L),
    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0x1.fp-1025L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L),
    TEST_c_c (cacos, 0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, 0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, -0.0L, 0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, -0.0L, -0x1.000000000000000000000000008p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249798097405561e-1L),
    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, 0.0L, 0.0L, -2.220446049250313080847263336181636063482e-16L),
    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, 0.0L, 3.141592653589793238462643383279502884197L, -2.220446049250313080847263336181636063482e-16L),
    TEST_c_c (cacos, 0x1.000000000000000000000000008p0L, -0.0L, 0.0L, 2.220446049250313080847263336181636063482e-16L),
    TEST_c_c (cacos, -0x1.000000000000000000000000008p0L, -0.0L, 3.141592653589793238462643383279502884197L, 2.220446049250313080847263336181636063482e-16L),
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 113
    TEST_c_c (cacos, 0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, -8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, 0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751374007L, 8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, -0x1p-113L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, -8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, -0x1p-113L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751510190L, 8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1p-113L, 4.767863183742677481693563511435642755521e-18L, -2.019699255375255198156433710951064632386e-17L),
    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1p-113L, 3.141592653589793233694780199536825402504L, -2.019699255375255198156433710951064632386e-17L),
    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1p-113L, 4.767863183742677481693563511435642755521e-18L, 2.019699255375255198156433710951064632386e-17L),
    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1p-113L, 3.141592653589793233694780199536825402504L, 2.019699255375255198156433710951064632386e-17L),
    TEST_c_c (cacos, 0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, 0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, -1.962615573354718824241727964954454332780e-17L),
    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0x1.fp-16385L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L),
    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 4.148847925325683229178506116378864361396e-4916L, 1.962615573354718824241727964954454332780e-17L),
    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0x1.fp-16385L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L),
    TEST_c_c (cacos, 0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, 0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, -0.0L, 0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, -8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, -0.0L, -0x1.0000000000000000000000000001p0L, 1.570796326794896619231321691639751442099L, 8.813735870195430252326093249797924452120e-1L),
    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, 0.0L, 0.0L, -1.962615573354718824241727964954454332780e-17L),
    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, 0.0L, 3.141592653589793238462643383279502884197L, -1.962615573354718824241727964954454332780e-17L),
    TEST_c_c (cacos, 0x1.0000000000000000000000000001p0L, -0.0L, 0.0L, 1.962615573354718824241727964954454332780e-17L),
    TEST_c_c (cacos, -0x1.0000000000000000000000000001p0L, -0.0L, 3.141592653589793238462643383279502884197L, 1.962615573354718824241727964954454332780e-17L),
#endif

    TEST_c_c (cacos, 0x1p-23L, 0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, -8.813735448726963984495965873956465777250e-1L),
    TEST_c_c (cacos, 0x1p-23L, -0x0.ffffffp0L, 1.570796242501197085295336701632142060969L, 8.813735448726963984495965873956465777250e-1L),
    TEST_c_c (cacos, -0x1p-23L, 0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, -8.813735448726963984495965873956465777250e-1L),
    TEST_c_c (cacos, -0x1p-23L, -0x0.ffffffp0L, 1.570796411088596153167306681647360823228L, 8.813735448726963984495965873956465777250e-1L),
    TEST_c_c (cacos, 0x0.ffffffp0L, 0x1p-23L, 4.391863861910487109445187743978204002614e-4L, -2.714321200917194650737217746780928423385e-4L),
    TEST_c_c (cacos, -0x0.ffffffp0L, 0x1p-23L, 3.141153467203602189751698864505105063797L, -2.714321200917194650737217746780928423385e-4L),
    TEST_c_c (cacos, 0x0.ffffffp0L, -0x1p-23L, 4.391863861910487109445187743978204002614e-4L, 2.714321200917194650737217746780928423385e-4L),
    TEST_c_c (cacos, -0x0.ffffffp0L, -0x1p-23L, 3.141153467203602189751698864505105063797L, 2.714321200917194650737217746780928423385e-4L),
    TEST_c_c (cacos, 0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, -8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, 0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442097L, 8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, -8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442101L, 8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, 0x0.ffffffp0L, 0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, -8.245504387859737323891843603996428534945e-36L),
    TEST_c_c (cacos, -0x0.ffffffp0L, 0x1.fp-129L, 3.141247386605077034875040133796864147700L, -8.245504387859737323891843603996428534945e-36L),
    TEST_c_c (cacos, 0x0.ffffffp0L, -0x1.fp-129L, 3.452669847162035876032494826387364972849e-4L, 8.245504387859737323891843603996428534945e-36L),
    TEST_c_c (cacos, -0x0.ffffffp0L, -0x1.fp-129L, 3.141247386605077034875040133796864147700L, 8.245504387859737323891843603996428534945e-36L),
    TEST_c_c (cacos, 0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, 0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, -0.0L, 0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, -0.0L, -0x0.ffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735448726938863015878255140556727969e-1L),
    TEST_c_c (cacos, 0x0.ffffffp0L, 0.0L, 3.452669847162035876032494826387364972849e-4L, -0.0L),
    TEST_c_c (cacos, -0x0.ffffffp0L, 0.0L, 3.141247386605077034875040133796864147700L, -0.0L),
    TEST_c_c (cacos, 0x0.ffffffp0L, -0.0L, 3.452669847162035876032494826387364972849e-4L, 0.0L),
    TEST_c_c (cacos, -0x0.ffffffp0L, -0.0L, 3.141247386605077034875040133796864147700L, 0.0L),
    TEST_c_c (cacos, 0x1p-23L, 0.5L, 1.570796220170866625230343643673321150378L, -4.812118250596059896127318386463676808798e-1L),
    TEST_c_c (cacos, 0x1p-23L, -0.5L, 1.570796220170866625230343643673321150378L, 4.812118250596059896127318386463676808798e-1L),
    TEST_c_c (cacos, -0x1p-23L, 0.5L, 1.570796433418926613232299739606181733819L, -4.812118250596059896127318386463676808798e-1L),
    TEST_c_c (cacos, -0x1p-23L, -0.5L, 1.570796433418926613232299739606181733819L, 4.812118250596059896127318386463676808798e-1L),
    TEST_c_c (cacos, 0.5L, 0x1p-23L, 1.047197551196603215914744618665204532273L, -1.376510308240943236356088341381173571841e-7L),
    TEST_c_c (cacos, -0.5L, 0x1p-23L, 2.094395102393190022547898764614298351924L, -1.376510308240943236356088341381173571841e-7L),
    TEST_c_c (cacos, 0.5L, -0x1p-23L, 1.047197551196603215914744618665204532273L, 1.376510308240943236356088341381173571841e-7L),
    TEST_c_c (cacos, -0.5L, -0x1p-23L, 2.094395102393190022547898764614298351924L, 1.376510308240943236356088341381173571841e-7L),
    TEST_c_c (cacos, 0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442096L, -4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, 0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442096L, 4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, 0.5L, 1.570796326794896619231321691639751442101L, -4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, -0x1.fp-129L, -0.5L, 1.570796326794896619231321691639751442101L, 4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, 0.5L, 0x1.fp-129L, 1.047197551196597746154214461093167628066L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -0.5L, 0x1.fp-129L, 2.094395102393195492308428922186335256131L, -3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, 0.5L, -0x1.fp-129L, 1.047197551196597746154214461093167628066L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -0.5L, -0x1.fp-129L, 2.094395102393195492308428922186335256131L, 3.287317402534702257036015056278368274737e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, 0x1p-23L, 0x1p-23L, 1.570796207585607068450636380271254316214L, -1.192092895507818146886315028596704749235e-7L),
    TEST_c_c (cacos, 0x1p-23L, -0x1p-23L, 1.570796207585607068450636380271254316214L, 1.192092895507818146886315028596704749235e-7L),
    TEST_c_c (cacos, -0x1p-23L, 0x1p-23L, 1.570796446004186170012007003008248567984L, -1.192092895507818146886315028596704749235e-7L),
    TEST_c_c (cacos, -0x1p-23L, -0x1p-23L, 1.570796446004186170012007003008248567984L, 1.192092895507818146886315028596704749235e-7L),
    TEST_c_c (cacos, 0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442096L, -1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, 0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442096L, 1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, -0x1.fp-129L, 0x1p-23L, 1.570796326794896619231321691639751442101L, -1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, -0x1.fp-129L, -0x1p-23L, 1.570796326794896619231321691639751442101L, 1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, 0x1p-23L, 0x1.fp-129L, 1.570796207585607068449789347324000006847L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -0x1p-23L, 0x1.fp-129L, 1.570796446004186170012854035955502877351L, -2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, 0x1p-23L, -0x1.fp-129L, 1.570796207585607068449789347324000006847L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -0x1p-23L, -0x1.fp-129L, 1.570796446004186170012854035955502877351L, 2.846900380897747786805634596726756660388e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, 0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, 0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, -0.0L, 0x1p-23L, 1.570796326794896619231321691639751442099L, -1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, -0.0L, -0x1p-23L, 1.570796326794896619231321691639751442099L, 1.192092895507809676556842485683592032154e-7L),
    TEST_c_c (cacos, 0x1p-23L, 0.0L, 1.570796207585607068449789347324000006847L, -0.0L),
    TEST_c_c (cacos, -0x1p-23L, 0.0L, 1.570796446004186170012854035955502877351L, -0.0L),
    TEST_c_c (cacos, 0x1p-23L, -0.0L, 1.570796207585607068449789347324000006847L, 0.0L),
    TEST_c_c (cacos, -0x1p-23L, -0.0L, 1.570796446004186170012854035955502877351L, 0.0L),
    TEST_c_c (cacos, 0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442096L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, 0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442096L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -0x1.fp-129L, 0x1.fp-129L, 1.570796326794896619231321691639751442101L, -2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
    TEST_c_c (cacos, -0x1.fp-129L, -0x1.fp-129L, 1.570796326794896619231321691639751442101L, 2.846900380897727558361783801085126250967e-39L, UNDERFLOW_EXCEPTION_FLOAT),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, -8.813735870195429467279863907910458761820e-1L),
    TEST_c_c (cacos, 0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896462222075823262236786996L, 8.813735870195429467279863907910458761820e-1L),
    TEST_c_c (cacos, -0x1p-52L, 0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, -8.813735870195429467279863907910458761820e-1L),
    TEST_c_c (cacos, -0x1p-52L, -0x0.fffffffffffff8p0L, 1.570796326794896776240567560017266097201L, 8.813735870195429467279863907910458761820e-1L),
    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1p-52L, 1.895456983915074112227925127005564372844e-8L, -1.171456840272878582596796205397918831268e-8L),
    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1p-52L, 3.141592634635223399311902261000251614142L, -1.171456840272878582596796205397918831268e-8L),
    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1p-52L, 1.895456983915074112227925127005564372844e-8L, 1.171456840272878582596796205397918831268e-8L),
    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1p-52L, 3.141592634635223399311902261000251614142L, 1.171456840272878582596796205397918831268e-8L),
    TEST_c_c (cacos, 0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, 0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0x1.fp-1025L, 3.141592638688632044614986995416067458693L, -3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0x1.fp-1025L, 1.490116119384765638786343542550461592240e-8L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0x1.fp-1025L, 3.141592638688632044614986995416067458693L, 3.616396521699973256461764099945789620604e-301L, UNDERFLOW_EXCEPTION_LDOUBLE_IBM),
    TEST_c_c (cacos, 0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, 0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, -0.0L, 0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, -8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, -0.0L, -0x0.fffffffffffff8p0L, 1.570796326794896619231321691639751442099L, 8.813735870195429467279863907910371604180e-1L),
    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, 0.0L, 1.490116119384765638786343542550461592240e-8L, -0.0L),
    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, 0.0L, 3.141592638688632044614986995416067458693L, -0.0L),
    TEST_c_c (cacos, 0x0.fffffffffffff8p0L, -0.0L, 1.490116119384765638786343542550461592240e-8L, 0.0L),
    TEST_c_c (cacos, -0x0.fffffffffffff8p0L, -0.0L, 3.141592638688632044614986995416067458693L, 0.0L),
#endif
    TEST_c_c (cacos, 0x1p-52L, 0.5L, 1.570796326794896420628589431857911675917L, -4.812118250596034474977589134243772428682e-1L),
    TEST_c_c (cacos, 0x1p-52L, -0.5L, 1.570796326794896420628589431857911675917L, 4.812118250596034474977589134243772428682e-1L),
    TEST_c_c (cacos, -0x1p-52L, 0.5L, 1.570796326794896817834053951421591208280L, -4.812118250596034474977589134243772428682e-1L),
    TEST_c_c (cacos, -0x1p-52L, -0.5L, 1.570796326794896817834053951421591208280L, 4.812118250596034474977589134243772428682e-1L),
    TEST_c_c (cacos, 0.5L, 0x1p-52L, 1.047197551196597746154214461093186605110L, -2.563950248511418570403591756798643804971e-16L),
    TEST_c_c (cacos, -0.5L, 0x1p-52L, 2.094395102393195492308428922186316279087L, -2.563950248511418570403591756798643804971e-16L),
    TEST_c_c (cacos, 0.5L, -0x1p-52L, 1.047197551196597746154214461093186605110L, 2.563950248511418570403591756798643804971e-16L),
    TEST_c_c (cacos, -0.5L, -0x1p-52L, 2.094395102393195492308428922186316279087L, 2.563950248511418570403591756798643804971e-16L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, 0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, 0.5L, 1.570796326794896619231321691639751442099L, -4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, -0x1.fp-1025L, -0.5L, 1.570796326794896619231321691639751442099L, 4.812118250596034474977589134243684231352e-1L),
    TEST_c_c (cacos, 0.5L, 0x1.fp-1025L, 1.047197551196597746154214461093167628066L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -0.5L, 0x1.fp-1025L, 2.094395102393195492308428922186335256131L, -6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, 0.5L, -0x1.fp-1025L, 1.047197551196597746154214461093167628066L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -0.5L, -0x1.fp-1025L, 2.094395102393195492308428922186335256131L, 6.222508863508420569166420770843207333493e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
#endif
    TEST_c_c (cacos, 0x1p-52L, 0x1p-52L, 1.570796326794896397186716766608443357372L, -2.220446049250313080847263336181677117148e-16L),
    TEST_c_c (cacos, 0x1p-52L, -0x1p-52L, 1.570796326794896397186716766608443357372L, 2.220446049250313080847263336181677117148e-16L),
    TEST_c_c (cacos, -0x1p-52L, 0x1p-52L, 1.570796326794896841275926616671059526825L, -2.220446049250313080847263336181677117148e-16L),
    TEST_c_c (cacos, -0x1p-52L, -0x1p-52L, 1.570796326794896841275926616671059526825L, 2.220446049250313080847263336181677117148e-16L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, 0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, -0x1.fp-1025L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, -0x1.fp-1025L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, 0x1p-52L, 0x1.fp-1025L, 1.570796326794896397186716766608443357372L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -0x1p-52L, 0x1.fp-1025L, 1.570796326794896841275926616671059526825L, -5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, 0x1p-52L, -0x1.fp-1025L, 1.570796326794896397186716766608443357372L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -0x1p-52L, -0x1.fp-1025L, 1.570796326794896841275926616671059526825L, 5.388850751072128349671657362289548938458e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
#endif
    TEST_c_c (cacos, 0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, 0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, -0.0L, 0x1p-52L, 1.570796326794896619231321691639751442099L, -2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, -0.0L, -0x1p-52L, 1.570796326794896619231321691639751442099L, 2.220446049250313080847263336181622378926e-16L),
    TEST_c_c (cacos, 0x1p-52L, 0.0L, 1.570796326794896397186716766608443357372L, -0.0L),
    TEST_c_c (cacos, -0x1p-52L, 0.0L, 1.570796326794896841275926616671059526825L, -0.0L),
    TEST_c_c (cacos, 0x1p-52L, -0.0L, 1.570796326794896397186716766608443357372L, 0.0L),
    TEST_c_c (cacos, -0x1p-52L, -0.0L, 1.570796326794896841275926616671059526825L, 0.0L),
#ifndef TEST_FLOAT
    TEST_c_c (cacos, 0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, 0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -0x1.fp-1025L, 0x1.fp-1025L, 1.570796326794896619231321691639751442099L, -5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
    TEST_c_c (cacos, -0x1.fp-1025L, -0x1.fp-1025L, 1.570796326794896619231321691639751442099L, 5.388850751072128349671657362289416093031e-309L, UNDERFLOW_EXCEPTION_DOUBLE),
#endif
#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
    TEST_c_c (cacos, 0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, -8.813735870195430251942769895627079569937e-1L),
    TEST_c_c (cacos, 0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619154657020805582738025L, 8.813735870195430251942769895627079569937e-1L),
    TEST_c_c (cacos, -0x1p-63L, 0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, -8.813735870195430251942769895627079569937e-1L),
    TEST_c_c (cacos, -0x1p-63L, -0x0.ffffffffffffffffp0L, 1.570796326794896619307986362473920146173L, 8.813735870195430251942769895627079569937e-1L),
    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1p-63L, 4.188407771167967636741951941902992986043e-10L, -2.588578361325995866221775673638805081337e-10L),
    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1p-63L, 3.141592653170952461345846619605307690007L, -2.588578361325995866221775673638805081337e-10L),
    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, -0x1p-63L, 4.188407771167967636741951941902992986043e-10L, 2.588578361325995866221775673638805081337e-10L),
    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, -0x1p-63L, 3.141592653170952461345846619605307690007L, 2.588578361325995866221775673638805081337e-10L),
# if LDBL_MIN_EXP <= -16381
    TEST_c_c (cacos, 0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
    TEST_c_c (cacos, 0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, 0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, -8.813735870195430251942769895627079569917e-1L),
    TEST_c_c (cacos, -0x1.fp-16385L, -0x0.ffffffffffffffffp0L, 1.570796326794896619231321691639751442099L, 8.813735870195430251942769895627079569917e-1L),
    TEST_c_c (cacos, 0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.292722539913596233371825532007990724506e-10L, -2.472906068161537187835415298076415423459e-4923L),
    TEST_c_c (cacos, -0x0.ffffffffffffffffp0L, 0x1.fp-16385L, 3.141592653260520984471283759942320330996L, -2.472906068161537187835415298076415423459e-4923L),
    TEST_c_c (cacos, 0x0.