diff options
Diffstat (limited to 'libc/sysdeps/linux/powerpc/bits/mathinline.h')
| -rw-r--r-- | libc/sysdeps/linux/powerpc/bits/mathinline.h | 125 |
1 files changed, 103 insertions, 22 deletions
diff --git a/libc/sysdeps/linux/powerpc/bits/mathinline.h b/libc/sysdeps/linux/powerpc/bits/mathinline.h index 76f68c1a1..87985a744 100644 --- a/libc/sysdeps/linux/powerpc/bits/mathinline.h +++ b/libc/sysdeps/linux/powerpc/bits/mathinline.h @@ -1,5 +1,6 @@ /* Inline math functions for powerpc. - Copyright (C) 1995,1996,1997,1998,1999,2000 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2004, 2006 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,20 +18,20 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#if defined __GNUC__ && !defined _SOFT_FLOAT - -#ifdef __USE_ISOC99 -# if __GNUC_PREREQ (2,96) +#ifndef _MATH_H +# error "Never use <bits/mathinline.h> directly; include <math.h> instead." +#endif -# define isgreater(x, y) __builtin_isgreater (x, y) -# define isgreaterequal(x, y) __builtin_isgreaterequal (x, y) -# define isless(x, y) __builtin_isless (x, y) -# define islessequal(x, y) __builtin_islessequal (x, y) -# define islessgreater(x, y) __builtin_islessgreater (x, y) -# define isunordered(x, y) __builtin_isunordered (x, y) +#ifdef __cplusplus +# define __MATH_INLINE __inline +#else +# define __MATH_INLINE extern __inline +#endif /* __cplusplus */ -# else +#if defined __GNUC__ && !defined _SOFT_FLOAT +#ifdef __USE_ISOC99 +# if !__GNUC_PREREQ (2,97) # define __unordered_cmp(x, y) \ (__extension__ \ ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \ @@ -39,6 +40,13 @@ : "cr7"); \ __r; })) +# undef isgreater +# undef isgreaterequal +# undef isless +# undef islessequal +# undef islessgreater +# undef isunordered + # define isgreater(x, y) (__unordered_cmp (x, y) >> 2 & 1) # define isgreaterequal(x, y) ((__unordered_cmp (x, y) & 6) != 0) # define isless(x, y) (__unordered_cmp (x, y) >> 3 & 1) @@ -47,24 +55,38 @@ # define isunordered(x, y) (__unordered_cmp (x, y) & 1) # endif /* __GNUC_PREREQ (2,97) */ + +/* 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) +/* 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; +} +__MATH_INLINE int +__NTH (__signbit (double __x)) +{ + __extension__ union { double __d; int __i[2]; } __u = { __d: __x }; + return __u.__i[0] < 0; +} +# endif #endif /* __USE_ISOC99 */ #if !defined __NO_MATH_INLINES && defined __OPTIMIZE__ -#ifdef __cplusplus -# define __MATH_INLINE __inline -#else -# define __MATH_INLINE extern __inline -#endif /* __cplusplus */ - #ifdef __USE_ISOC99 + +# ifndef __powerpc64__ __MATH_INLINE long int lrint (double __x) __THROW; __MATH_INLINE long int __NTH (lrint (double __x)) { union { double __d; - long int __ll[2]; + int __ll[2]; } __u; __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x)); return __u.__ll[1]; @@ -76,26 +98,85 @@ __NTH (lrintf (float __x)) { union { double __d; - long int __ll[2]; + int __ll[2]; } __u; __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x)); return __u.__ll[1]; } +# endif __MATH_INLINE double fdim (double __x, double __y) __THROW; __MATH_INLINE double __NTH (fdim (double __x, double __y)) { - return __x < __y ? 0 : __x - __y; + return __x <= __y ? 0 : __x - __y; } __MATH_INLINE float fdimf (float __x, float __y) __THROW; __MATH_INLINE float __NTH (fdimf (float __x, float __y)) { - return __x < __y ? 0 : __x - __y; + return __x <= __y ? 0 : __x - __y; } #endif /* __USE_ISOC99 */ #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */ + +/* This code is used internally in the GNU libc. */ +#if 0 /*def __LIBC_INTERNAL_MATH_INLINES*/ + +#include <sysdep.h> +#include <ldsodefs.h> +#include <dl-procinfo.h> + +# if __WORDSIZE == 64 || defined _ARCH_PWR4 +# define __CPU_HAS_FSQRT 1 +# else +# define __CPU_HAS_FSQRT ((GLRO(dl_hwcap) & PPC_FEATURE_64) != 0) +# endif + +extern double __slow_ieee754_sqrt (double); +__MATH_INLINE double +__NTH (__ieee754_sqrt (double __x)) +{ + double __z; + + /* If the CPU is 64-bit we can use the optional FP instructions. */ + if (__CPU_HAS_FSQRT) + { + /* Volatile is required to prevent the compiler from moving the + fsqrt instruction above the branch. */ + __asm __volatile ( + " fsqrt %0,%1\n" + : "=f" (__z) + : "f" (__x)); + } + else + __z = __slow_ieee754_sqrt(__x); + + return __z; +} + +extern float __slow_ieee754_sqrtf (float); +__MATH_INLINE float +__NTH (__ieee754_sqrtf (float __x)) +{ + float __z; + + /* If the CPU is 64-bit we can use the optional FP instructions. */ + if (__CPU_HAS_FSQRT) + { + /* Volatile is required to prevent the compiler from moving the + fsqrts instruction above the branch. */ + __asm __volatile ( + " fsqrts %0,%1\n" + : "=f" (__z) + : "f" (__x)); + } + else + __z = __slow_ieee754_sqrtf(__x); + + return __z; +} +#endif /* __LIBC_INTERNAL_MATH_INLINES */ #endif /* __GNUC__ && !_SOFT_FLOAT */ |