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| author | Ulrich Drepper <drepper@gmail.com> | 2011-09-15 13:11:08 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-09-15 13:11:08 -0400 |
| commit | 4c1a1f71c083953f65b8f06bf7103cde549b3fb1 (patch) | |
| tree | 468eb4128b608f16552ca00ebf3ff9bc6af615de | |
| parent | ee4d03150a65018f367e3250887ec9c5b2133ce4 (diff) | |
| download | glibc-4c1a1f71c083953f65b8f06bf7103cde549b3fb1.tar.gz glibc-4c1a1f71c083953f65b8f06bf7103cde549b3fb1.tar.xz glibc-4c1a1f71c083953f65b8f06bf7103cde549b3fb1.zip | |
Add fmax and fmin inlines for x86-64
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/bits/mathinline.h | 46 |
2 files changed, 46 insertions, 5 deletions
diff --git a/ChangeLog b/ChangeLog index 57195c220b..37e87822d6 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2011-09-15 Ulrich Drepper <drepper@gmail.com> + + * sysdeps/x86_64/fpu/bits/mathinline.h: Add fmax and fmin optimizations + for __FINITE_MATH_ONLY__ == 1. + 2011-09-14 Ulrich Drepper <drepper@gmail.com> * sysdeps/x86_64/fpu/s_copysign.S [ELF]: Use correct section. diff --git a/sysdeps/x86_64/fpu/bits/mathinline.h b/sysdeps/x86_64/fpu/bits/mathinline.h index 9f2c4d9689..b63ab12eb3 100644 --- a/sysdeps/x86_64/fpu/bits/mathinline.h +++ b/sysdeps/x86_64/fpu/bits/mathinline.h @@ -64,8 +64,11 @@ __NTH (__signbitl (long double __x)) return (__u.__i[2] & 0x8000) != 0; } +#ifdef __USE_ISOC99 +__BEGIN_NAMESPACE_C99 + /* Round to nearest integer. */ -# if __WORDSIZE == 64 || defined __SSE_MATH__ +# if __WORDSIZE == 64 || defined __SSE_MATH__ __MATH_INLINE long int __NTH (lrintf (float __x)) { @@ -73,8 +76,8 @@ __NTH (lrintf (float __x)) asm ("cvtss2si %1, %0" : "=r" (__res) : "xm" (__x)); return __res; } -# endif -# if __WORDSIZE == 64 || defined __SSE2_MATH__ +# endif +# if __WORDSIZE == 64 || defined __SSE2_MATH__ __MATH_INLINE long int __NTH (lrint (double __x)) { @@ -82,8 +85,8 @@ __NTH (lrint (double __x)) asm ("cvtsd2si %1, %0" : "=r" (__res) : "xm" (__x)); return __res; } -# endif -# if __WORDSIZE == 64 +# endif +# if __WORDSIZE == 64 __MATH_INLINE long long int __NTH (llrintf (float __x)) { @@ -98,6 +101,39 @@ __NTH (llrint (double __x)) asm ("cvtsd2si %1, %0" : "=r" (__res) : "xm" (__x)); return __res; } +# endif + +# if __FINITE_MATH_ONLY__ == 1 && (__WORDSIZE == 64 || defined __SSE2_MATH__) +/* Determine maximum of two values. */ +__MATH_INLINE float +__NTH (fmaxf (float __x, float __y)) +{ + asm ("maxss %1, %0" : "+x" (__x) : "xm" (__y)); + return __x; +} +__MATH_INLINE double +__NTH (fmax (double __x, double __y)) +{ + asm ("maxsd %1, %0" : "+x" (__x) : "xm" (__y)); + return __x; +} + +/* Determine minimum of two values. */ +__MATH_INLINE float +__NTH (fminf (float __x, float __y)) +{ + asm ("minss %1, %0" : "+x" (__x) : "xm" (__y)); + return __x; +} +__MATH_INLINE double +__NTH (fmin (double __x, double __y)) +{ + asm ("minsd %1, %0" : "+x" (__x) : "xm" (__y)); + return __x; +} +# endif + +__END_NAMESPACE_C99 # endif #endif |