mingw-w64-crt/testcases/complex/cproj.c

/*
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 Copyright (c) 2009, 2010 by the mingw-w64 project

 See the AUTHORS file for the list of contributors to the mingw-w64 project.

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 as GPL compatible by the Free Software Foundation (FSF).

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      notice, this list of conditions, and the following disclaimer.
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      in the documentation and/or other materials provided with the
      distribution.
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      products derived from this software without prior written permission
      from the copyright holders.
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      not give you the right to use Servicemarks (sm) or Trademarks (tm) of
      the copyright holders.  Use of them is covered by separate agreement
      with the copyright holders.
   5. If any files are modified, you must cause the modified files to carry
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 Disclaimer

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY EXPRESSED
 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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*/

#include "complex_test.h"

/**
 * Section 7.3.9.4
 * The cproj functions compute a projection of z onto the Riemann sphere: z projects to
 * z except that all complex infinities (even those with one infinite part and one NaN part)
 * project to positive infinity on the real axis. If z has an infinite part, then cproj(z) is
 * equivalent to
 * INFINITY + I * copysign(0.0, cimag(z))
 */

int __FLT_ABI(test_function_cproj) ()
{
  _DEFINE_DEFAULT_TEST_FUNCTION (cproj, 0);

  DEFAULT_TESTS_START

  DEFINE_TEST (       -INFINITY, -__FLT_CST(42.42),      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (        INFINITY, -__FLT_CST(42.42),      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (       -INFINITY,  __FLT_CST(42.42),      INFINITY,      __FLT_CST(0.0), 0, 0)
  DEFINE_TEST (        INFINITY,  __FLT_CST(42.42),      INFINITY,      __FLT_CST(0.0), 0, 0)
  DEFINE_TEST (       -INFINITY,         -INFINITY,      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (        INFINITY,         -INFINITY,      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (       -INFINITY,          INFINITY,      INFINITY,      __FLT_CST(0.0), 0, 0)
  DEFINE_TEST (        INFINITY,          INFINITY,      INFINITY,      __FLT_CST(0.0), 0, 0)
  DEFINE_TEST (       -INFINITY,        -__FLT_NAN,      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (        INFINITY,        -__FLT_NAN,      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (       -INFINITY,         __FLT_NAN,      INFINITY,      __FLT_CST(0.0), 0, 0)
  DEFINE_TEST (        INFINITY,         __FLT_NAN,      INFINITY,      __FLT_CST(0.0), 0, 0)

  DEFINE_TEST (      -__FLT_NAN,         -INFINITY,      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (       __FLT_NAN,         -INFINITY,      INFINITY,     -__FLT_CST(0.0), 0, 0)
  DEFINE_TEST (      -__FLT_NAN,          INFINITY,      INFINITY,      __FLT_CST(0.0), 0, 0)
  DEFINE_TEST (       __FLT_NAN,          INFINITY,      INFINITY,      __FLT_CST(0.0), 0, 0)

  /* z projects to z */
  DEFINE_TEST (-__FLT_CST(42.42), -__FLT_CST(42.42), -__FLT_CST(42.42), -__FLT_CST(42.42), 0, 0)
  DEFINE_TEST (-__FLT_CST(42.42),  __FLT_CST(42.42), -__FLT_CST(42.42),  __FLT_CST(42.42), 0, 0)
  DEFINE_TEST ( __FLT_CST(42.42), -__FLT_CST(42.42),  __FLT_CST(42.42), -__FLT_CST(42.42), 0, 0)
  DEFINE_TEST ( __FLT_CST(42.42),  __FLT_CST(42.42),  __FLT_CST(42.42),  __FLT_CST(42.42), 0, 0)
  DEFINE_TEST (        __FLT_NAN, -__FLT_CST(42.42),         __FLT_NAN, -__FLT_CST(42.42), 0, 0)
  DEFINE_TEST (        __FLT_NAN,  __FLT_CST(42.42),         __FLT_NAN,  __FLT_CST(42.42), 0, 0)
  DEFINE_TEST (-__FLT_CST(42.42),         __FLT_NAN, -__FLT_CST(42.42),         __FLT_NAN, 0, 0)
  DEFINE_TEST ( __FLT_CST(42.42),         __FLT_NAN,  __FLT_CST(42.42),         __FLT_NAN, 0, 0)
  DEFINE_TEST (       __FLT_NAN,         __FLT_NAN,     __FLT_NAN,         __FLT_NAN, 0, 0)

  TESTS_END

  return RUN_DEFAULT_TESTS(cproj);
}