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author | Ulrich Drepper <drepper@redhat.com> | 2006-11-06 19:45:58 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2006-11-06 19:45:58 +0000 |
commit | a9a6bf36c159dc0eda7fc9a9985fb737da4be07a (patch) | |
tree | 60ce20b8e0b28aea6b50f94f0890d01189251601 /sysdeps/powerpc/fpu/math_private.h | |
parent | ee6815e76c19f805229f4dbfd4ec27de1bb9864f (diff) | |
download | glibc-a9a6bf36c159dc0eda7fc9a9985fb737da4be07a.tar.gz glibc-a9a6bf36c159dc0eda7fc9a9985fb737da4be07a.tar.xz glibc-a9a6bf36c159dc0eda7fc9a9985fb737da4be07a.zip |
* sysdeps/powerpc/fpu/bits/mathinline.h
[__LIBC_INTERNAL_MATH_INLINES]: Moved to ... * sysdeps/powerpc/fpu/math_private.h: ...here. New file.
Diffstat (limited to 'sysdeps/powerpc/fpu/math_private.h')
-rw-r--r-- | sysdeps/powerpc/fpu/math_private.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sysdeps/powerpc/fpu/math_private.h b/sysdeps/powerpc/fpu/math_private.h new file mode 100644 index 0000000000..cea25a8db6 --- /dev/null +++ b/sysdeps/powerpc/fpu/math_private.h @@ -0,0 +1,83 @@ +/* Private inline math functions for powerpc. + Copyright (C) 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 + 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, write to the Free + Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, + MA 02110-1301 USA */ + +#ifndef _PPC_MATH_PRIVATE_H_ +#define _PPC_MATH_PRIVATE_H_ + +#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 + +# ifndef __LIBC_INTERNAL_MATH_INLINES +extern double __slow_ieee754_sqrt (double); +__inline double +__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); + +__inline float +__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 */ + +# include_next <math_private.h> + +#endif /* _PPC_MATH_PRIVATE_H_ */ |