| /* Inline math functions for SPARC. |
| Copyright (C) 1999-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Jakub Jelinek <jakub@redhat.com>. |
| |
| 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/>. */ |
| |
| #ifndef _MATH_H |
| # error "Never use <bits/mathinline.h> directly; include <math.h> instead." |
| #endif |
| |
| #include <bits/wordsize.h> |
| |
| #ifdef __GNUC__ |
| |
| #if defined __USE_ISOC99 && !__GNUC_PREREQ (3, 0) |
| # undef isgreater |
| # undef isgreaterequal |
| # undef isless |
| # undef islessequal |
| # undef islessgreater |
| # undef isunordered |
| |
| # if __WORDSIZE == 32 |
| |
| # ifndef __NO_LONG_DOUBLE_MATH |
| |
| # define __unordered_cmp(x, y) \ |
| (__extension__ \ |
| ({ unsigned __r; \ |
| if (sizeof (x) == 4 && sizeof (y) == 4) \ |
| { \ |
| float __x = (x); float __y = (y); \ |
| __asm__ ("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x), \ |
| "f" (__y) : "cc"); \ |
| } \ |
| else if (sizeof (x) <= 8 && sizeof (y) <= 8) \ |
| { \ |
| double __x = (x); double __y = (y); \ |
| __asm__ ("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x), \ |
| "f" (__y) : "cc"); \ |
| } \ |
| else \ |
| { \ |
| long double __x = (x); long double __y = (y); \ |
| extern int _Q_cmp (const long double a, const long double b); \ |
| __r = _Q_cmp (__x, __y) << 10; \ |
| } \ |
| __r; })) |
| |
| # else |
| |
| # define __unordered_cmp(x, y) \ |
| (__extension__ \ |
| ({ unsigned __r; \ |
| if (sizeof (x) == 4 && sizeof (y) == 4) \ |
| { \ |
| float __x = (x); float __y = (y); \ |
| __asm__ ("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x), \ |
| "f" (__y) : "cc"); \ |
| } \ |
| else \ |
| { \ |
| double __x = (x); double __y = (y); \ |
| __asm__ ("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x), \ |
| "f" (__y) : "cc"); \ |
| } \ |
| __r; })) |
| |
| # endif |
| |
| # define isgreater(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (2 << 10)) |
| # define isgreaterequal(x, y) ((__unordered_cmp (x, y) & (1 << 10)) == 0) |
| # define isless(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (1 << 10)) |
| # define islessequal(x, y) ((__unordered_cmp (x, y) & (2 << 10)) == 0) |
| # define islessgreater(x, y) (((__unordered_cmp (x, y) + (1 << 10)) & (2 << 10)) != 0) |
| # define isunordered(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (3 << 10)) |
| |
| # else /* sparc64 */ |
| |
| # define __unordered_v9cmp(x, y, op, qop) \ |
| (__extension__ \ |
| ({ unsigned __r; \ |
| if (sizeof (x) == 4 && sizeof (y) == 4) \ |
| { \ |
| float __x = (x); float __y = (y); \ |
| __asm__ ("fcmps\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0" \ |
| : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \ |
| } \ |
| else if (sizeof (x) <= 8 && sizeof (y) <= 8) \ |
| { \ |
| double __x = (x); double __y = (y); \ |
| __asm__ ("fcmpd\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0" \ |
| : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \ |
| } \ |
| else \ |
| { \ |
| long double __x = (x); long double __y = (y); \ |
| extern int _Qp_cmp (const long double *a, const long double *b); \ |
| __r = qop; \ |
| } \ |
| __r; })) |
| |
| # define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2) |
| # define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0) |
| # define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1) |
| # define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0) |
| # define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0) |
| # define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3) |
| |
| # endif /* sparc64 */ |
| |
| #endif /* __USE_ISOC99 */ |
| |
| #if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__ |
| |
| # ifndef __extern_inline |
| # define __MATH_INLINE __inline |
| # else |
| # define __MATH_INLINE __extern_inline |
| # endif /* __cplusplus */ |
| |
| /* The gcc, version 2.7 or below, has problems with all this inlining |
| code. So disable it for this version of the compiler. */ |
| # if __GNUC_PREREQ (2, 8) |
| |
| # ifdef __USE_ISOC99 |
| |
| /* Test for negative number. Used in the signbit() macro. */ |
| __MATH_INLINE int |
| __NTH (__signbitf (float __x)) |
| { |
| __extension__ union { float __f; int __i; } __u = { __f: __x }; |
| return __u.__i < 0; |
| } |
| |
| # if __WORDSIZE == 32 |
| |
| __MATH_INLINE int |
| __NTH (__signbit (double __x)) |
| { |
| __extension__ union { double __d; int __i[2]; } __u = { __d: __x }; |
| return __u.__i[0] < 0; |
| } |
| |
| # ifndef __NO_LONG_DOUBLE_MATH |
| __MATH_INLINE int |
| __NTH (__signbitl (long double __x)) |
| { |
| __extension__ union { long double __l; int __i[4]; } __u = { __l: __x }; |
| return __u.__i[0] < 0; |
| } |
| # else |
| __MATH_INLINE int |
| __NTH (__signbitl (long double __x)) |
| { |
| return __signbit ((double)__x); |
| } |
| # endif |
| |
| # else /* sparc64 */ |
| |
| __MATH_INLINE int |
| __NTH (__signbit (double __x)) |
| { |
| __extension__ union { double __d; long int __i; } __u = { __d: __x }; |
| return __u.__i < 0; |
| } |
| |
| __MATH_INLINE int |
| __NTH (__signbitl (long double __x)) |
| { |
| __extension__ union { long double __l; long int __i[2]; } __u = { __l: __x }; |
| return __u.__i[0] < 0; |
| } |
| |
| # endif /* sparc64 */ |
| |
| # endif /* __USE_ISOC99 */ |
| |
| # if !defined __NO_MATH_INLINES && !__GNUC_PREREQ (3, 2) |
| |
| __MATH_INLINE double |
| __NTH (sqrt (double __x)) |
| { |
| register double __r; |
| __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x)); |
| return __r; |
| } |
| |
| __MATH_INLINE float |
| __NTH (sqrtf (float __x)) |
| { |
| register float __r; |
| __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x)); |
| return __r; |
| } |
| |
| # if __WORDSIZE == 64 |
| __MATH_INLINE long double |
| __NTH (sqrtl (long double __x)) |
| { |
| long double __r; |
| extern void _Qp_sqrt (long double *, const long double *); |
| _Qp_sqrt (&__r, &__x); |
| return __r; |
| } |
| # elif !defined __NO_LONG_DOUBLE_MATH |
| __MATH_INLINE long double |
| sqrtl (long double __x) __THROW |
| { |
| extern long double _Q_sqrt (const long double); |
| return _Q_sqrt (__x); |
| } |
| # endif /* sparc64 */ |
| |
| # endif /* !__NO_MATH_INLINES && !GCC 3.2+ */ |
| |
| /* This code is used internally in the GNU libc. */ |
| # ifdef __LIBC_INTERNAL_MATH_INLINES |
| __MATH_INLINE double |
| __ieee754_sqrt (double __x) |
| { |
| register double __r; |
| __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x)); |
| return __r; |
| } |
| |
| __MATH_INLINE float |
| __ieee754_sqrtf (float __x) |
| { |
| register float __r; |
| __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x)); |
| return __r; |
| } |
| |
| # if __WORDSIZE == 64 |
| __MATH_INLINE long double |
| __ieee754_sqrtl (long double __x) |
| { |
| long double __r; |
| extern void _Qp_sqrt (long double *, const long double *); |
| _Qp_sqrt(&__r, &__x); |
| return __r; |
| } |
| # elif !defined __NO_LONG_DOUBLE_MATH |
| __MATH_INLINE long double |
| __ieee754_sqrtl (long double __x) |
| { |
| extern long double _Q_sqrt (const long double); |
| return _Q_sqrt (__x); |
| } |
| # endif /* sparc64 */ |
| # endif /* __LIBC_INTERNAL_MATH_INLINES */ |
| # endif /* gcc 2.8+ */ |
| |
| # ifdef __USE_ISOC99 |
| |
| # ifndef __NO_MATH_INLINES |
| |
| __MATH_INLINE double __NTH (fdim (double __x, double __y)); |
| __MATH_INLINE double |
| __NTH (fdim (double __x, double __y)) |
| { |
| return __x <= __y ? 0 : __x - __y; |
| } |
| |
| __MATH_INLINE float __NTH (fdimf (float __x, float __y)); |
| __MATH_INLINE float |
| __NTH (fdimf (float __x, float __y)) |
| { |
| return __x <= __y ? 0 : __x - __y; |
| } |
| |
| # endif /* !__NO_MATH_INLINES */ |
| # endif /* __USE_ISOC99 */ |
| #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */ |
| #endif /* __GNUC__ */ |