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132 lines
3.7 KiB
C
132 lines
3.7 KiB
C
/* Inline math functions for powerpc.
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Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2004, 2006, 2007, 2008
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _MATH_H
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# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
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#endif
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#ifndef __extern_inline
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# define __MATH_INLINE __inline
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#else
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# define __MATH_INLINE __extern_inline
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#endif /* __cplusplus */
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#if defined __GNUC__ && !defined _SOFT_FLOAT
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#ifdef __USE_ISOC99
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# if !__GNUC_PREREQ (2,97)
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# define __unordered_cmp(x, y) \
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(__extension__ \
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({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
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unsigned __r; \
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__asm__("fcmpu 7,%1,%2 ; mfcr %0" : "=r" (__r) : "f" (__x), "f"(__y) \
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: "cr7"); \
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__r; }))
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# undef isgreater
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# undef isgreaterequal
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# undef isless
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# undef islessequal
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# undef islessgreater
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# undef isunordered
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# define isgreater(x, y) (__unordered_cmp (x, y) >> 2 & 1)
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# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & 6) != 0)
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# define isless(x, y) (__unordered_cmp (x, y) >> 3 & 1)
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# define islessequal(x, y) ((__unordered_cmp (x, y) & 0xA) != 0)
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# define islessgreater(x, y) ((__unordered_cmp (x, y) & 0xC) != 0)
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# define isunordered(x, y) (__unordered_cmp (x, y) & 1)
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# endif /* __GNUC_PREREQ (2,97) */
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/* The gcc, version 2.7 or below, has problems with all this inlining
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code. So disable it for this version of the compiler. */
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# if __GNUC_PREREQ (2, 8)
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/* Test for negative number. Used in the signbit() macro. */
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__MATH_INLINE int
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__NTH (__signbitf (float __x))
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{
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__extension__ union { float __f; int __i; } __u = { __f: __x };
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return __u.__i < 0;
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}
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__MATH_INLINE int
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__NTH (__signbit (double __x))
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{
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__extension__ union { double __d; int __i[2]; } __u = { __d: __x };
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return __u.__i[0] < 0;
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}
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# ifdef __LONG_DOUBLE_128__
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__MATH_INLINE int
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__NTH (__signbitl (long double __x))
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{
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__extension__ union { long double __d; int __i[4]; } __u = { __d: __x };
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return __u.__i[0] < 0;
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}
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# endif
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# endif
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#endif /* __USE_ISOC99 */
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#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
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#ifdef __USE_ISOC99
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# ifndef __powerpc64__
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__MATH_INLINE long int lrint (double __x) __THROW;
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__MATH_INLINE long int
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__NTH (lrint (double __x))
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{
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union {
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double __d;
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int __ll[2];
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} __u;
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__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
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return __u.__ll[1];
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}
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__MATH_INLINE long int lrintf (float __x) __THROW;
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__MATH_INLINE long int
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__NTH (lrintf (float __x))
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{
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union {
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double __d;
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int __ll[2];
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} __u;
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__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
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return __u.__ll[1];
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}
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# endif
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__MATH_INLINE double fdim (double __x, double __y) __THROW;
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__MATH_INLINE double
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__NTH (fdim (double __x, double __y))
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{
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return __x <= __y ? 0 : __x - __y;
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}
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__MATH_INLINE float fdimf (float __x, float __y) __THROW;
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__MATH_INLINE float
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__NTH (fdimf (float __x, float __y))
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{
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return __x <= __y ? 0 : __x - __y;
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}
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#endif /* __USE_ISOC99 */
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#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
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#endif /* __GNUC__ && !_SOFT_FLOAT */
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