diff options
author | Andreas Schwab <schwab@redhat.com> | 2009-09-02 11:49:06 +0200 |
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committer | Andreas Schwab <schwab@redhat.com> | 2009-09-02 11:49:06 +0200 |
commit | 91740ee0e6897651f4996c52b6056af592f4e977 (patch) | |
tree | a517ca4dfac93d24c0c3e1ec897085ca28e4315a /sysdeps/x86_64/fpu/bits/mathinline.h | |
parent | b19ed4af95f005441cee8d138951665164bd28a8 (diff) | |
parent | d840539e1271020600edba752e6ee908c00f66eb (diff) |
Merge commit 'origin/master' into fedora/master
Diffstat (limited to 'sysdeps/x86_64/fpu/bits/mathinline.h')
-rw-r--r-- | sysdeps/x86_64/fpu/bits/mathinline.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/bits/mathinline.h b/sysdeps/x86_64/fpu/bits/mathinline.h index ece0f02678..dc58f67d6c 100644 --- a/sysdeps/x86_64/fpu/bits/mathinline.h +++ b/sysdeps/x86_64/fpu/bits/mathinline.h @@ -22,6 +22,8 @@ # error "Never use <bits/mathinline.h> directly; include <math.h> instead." #endif +#include <bits/wordsize.h> + #ifndef __extern_inline # define __MATH_INLINE __inline #else @@ -35,16 +37,26 @@ __MATH_INLINE int __NTH (__signbitf (float __x)) { +#if __WORDSIZE == 32 + __extension__ union { float __f; int __i; } __u = { __f: __x }; + return __u.__i < 0; +#else int __m; __asm ("pmovmskb %1, %0" : "=r" (__m) : "x" (__x)); return __m & 0x8; +#endif } __MATH_INLINE int __NTH (__signbit (double __x)) { +#if __WORDSIZE == 32 + __extension__ union { double __d; int __i[2]; } __u = { __d: __x }; + return __u.__i[1] < 0; +#else int __m; __asm ("pmovmskb %1, %0" : "=r" (__m) : "x" (__x)); return __m & 0x80; +#endif } __MATH_INLINE int __NTH (__signbitl (long double __x)) |