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/* Private inline math functions for powerpc.
Copyright (C) 2006, 2011
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, see
<http://www.gnu.org/licenses/>. */
#ifndef _PPC_MATH_PRIVATE_H_
#define _PPC_MATH_PRIVATE_H_
#include <sysdep.h>
#include <ldsodefs.h>
#include <dl-procinfo.h>
#include <math/math_private.h>
# if __WORDSIZE == 64 || defined _ARCH_PWR4
# define __CPU_HAS_FSQRT 1
#ifndef __ieee754_sqrt
# define __ieee754_sqrt(x) \
({ double __z; \
__asm __volatile ( \
" fsqrt %0,%1\n" \
: "=f" (__z) \
: "f"(x)); \
__z; })
#endif
#ifndef __ieee754_sqrtf
# define __ieee754_sqrtf(x) \
({ float __z; \
__asm __volatile ( \
" fsqrts %0,%1\n" \
: "=f" (__z) \
: "f"(x)); \
__z; })
#endif
# else
# define __CPU_HAS_FSQRT ((GLRO(dl_hwcap) & PPC_FEATURE_64) != 0)
# endif // __WORDSIZE == 64 || defined _ARCH_PWR4
#if defined _ARCH_PWR5X
# ifndef __round
# define __round(x) \
({ double __z; \
__asm __volatile ( \
" frin %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __roundf
# define __roundf(x) \
({ float __z; \
__asm __volatile ( \
" frin %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __trunc
# define __trunc(x) \
({ double __z; \
__asm __volatile ( \
" friz %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __truncf
# define __truncf(x) \
({ float __z; \
__asm __volatile ( \
" friz %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __ceil
# define __ceil(x) \
({ double __z; \
__asm __volatile ( \
" frip %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __ceilf
# define __ceilf(x) \
({ float __z; \
__asm __volatile ( \
" frip %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __floor
# define __floor(x) \
({ double __z; \
__asm __volatile ( \
" frim %0,%1\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
# ifndef __floorf
# define __floorf(x) \
({ float __z; \
__asm __volatile ( \
" frim %0,%1\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (x)); \
__z; })
# endif
#endif /* defined _ARCH_PWR5X */
#if defined _ARCH_PWR6
# ifndef __copysign
# define __copysign(x, y) \
({ double __z; \
__asm __volatile ( \
" fcpsgn %0,%1,%2\n" \
: "=f" (__z) \
: "f" (y), "f" (x)); \
__z; })
# endif
# ifndef __copysignf
# define __copysignf(x, y) \
({ float __z; \
__asm __volatile ( \
" fcpsgn %0,%1,%2\n" \
" frsp %0,%0\n" \
: "=f" (__z) \
: "f" (y), "f" (x)); \
__z; })
# endif
#endif /* defined _ARCH_PWR6 */
# 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 */
#endif /* _PPC_MATH_PRIVATE_H_ */
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