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/* Inline math functions for SPARC.
Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jj@ultra.linux.cz>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _MATH_H
# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
#endif
#include <bits/wordsize.h>
#if defined __GNUC__
#ifdef __USE_ISOC9X
#if __WORDSIZE == 32
# define __unordered_cmp(x, y) \
(__extension__ \
({ unsigned __r; \
if (sizeof(x) == 4 && sizeof(y) == 4) \
{ \
float __x = (x); float __y = (y); \
__asm__("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x), \
"f" (__y) : "cc"); \
} \
else \
{ \
double __x = (x); double __y = (y); \
__asm__("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x), \
"f" (__y) : "cc"); \
} \
__r; }))
# define isgreater(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (2 << 10))
# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & (1 << 10)) == 0)
# define isless(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (1 << 10))
# define islessequal(x, y) ((__unordered_cmp (x, y) & (2 << 10)) == 0)
# define islessgreater(x, y) (((__unordered_cmp (x, y) + (1 << 10)) & (2 << 10)) != 0)
# define isunordered(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (3 << 10))
#else /* sparc64 */
# define __unordered_v9cmp(x, y, op, qop) \
(__extension__ \
({ unsigned __r; \
if (sizeof(x) == 4 && sizeof(y) == 4) \
{ \
float __x = (x); float __y = (y); \
__asm__("fcmps\t%%fcc3,%1,%2\n\tmov" ## op ## "\t%%fcc3,1,%0" \
: "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \
} \
else if (sizeof(x) <= 8 && sizeof(y) <= 8) \
{ \
double __x = (x); double __y = (y); \
__asm__("fcmpd\t%%fcc3,%1,%2\n\tmov" ## op ## "\t%%fcc3,1,%0" \
: "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \
} \
else \
{ \
long double __x = (x); long double __y = (y); \
extern int _Qp_cmp(const long double *a, const long double *b); \
__r = qop; \
} \
__r; }))
# define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2)
# define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0)
# define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1)
# define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0)
# define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0)
# define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3)
#endif /* sparc64 */
#endif /* __USE_ISOC9X */
#if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
#ifdef __cplusplus
# define __MATH_INLINE __inline
#else
# define __MATH_INLINE extern __inline
#endif /* __cplusplus */
/* 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__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 7))
/* Test for negative number. Used in the signbit() macro. */
__MATH_INLINE int
__signbitf (float __x)
{
__extension__ union { float __f; int __i; } __u = { __f: __x };
return __u.__i < 0;
}
__MATH_INLINE int
__signbit (double __x)
{
__extension__ union { double __d; int __i[2]; } __u = { __d: __x };
return __u.__i[0] < 0;
}
__MATH_INLINE int
__signbitl (long double __x)
{
if (sizeof(long double) == 8)
{
__extension__ union { long double __l; int __i[2]; } __u = { __l: __x };
return __u.__i[0] < 0;
}
else
{
__extension__ union { long double __l; int __i[4]; } __u = { __l: __x };
return __u.__i[0] < 0;
}
}
__MATH_INLINE double
sqrt(double __x)
{
register double __r;
__asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
return __r;
}
__MATH_INLINE float
sqrtf(float __x)
{
register float __r;
__asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
return __r;
}
#if __WORDSIZE == 64
__MATH_INLINE long double
sqrtl(long double __x)
{
long double __r;
extern void _Qp_sqrt(long double *, __const__ long double *);
_Qp_sqrt(&__r, &__x);
return __r;
}
#endif /* sparc64 */
/* This code is used internally in the GNU libc. */
#ifdef __LIBC_INTERNAL_MATH_INLINES
__MATH_INLINE double
__ieee754_sqrt(double __x)
{
register double __r;
__asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
return __r;
}
__MATH_INLINE float
__ieee754_sqrtf(float __x)
{
register float __r;
__asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
return __r;
}
#if __WORDSIZE == 64
__MATH_INLINE long double
__ieee754_sqrtl(long double __x)
{
long double __r;
extern void _Qp_sqrt(long double *, __const__ long double *);
_Qp_sqrt(&__r, &__x);
return __r;
}
#endif /* sparc64 */
#endif /* __LIBC_INTERNAL_MATH_INLINES */
#endif /* gcc 2.8+ */
#ifdef __USE_ISOC9X
__MATH_INLINE double fdim (double __x, double __y);
__MATH_INLINE double
fdim (double __x, double __y)
{
return __x < __y ? 0 : __x - __y;
}
__MATH_INLINE float fdimf (float __x, float __y);
__MATH_INLINE float
fdimf (float __x, float __y)
{
return __x < __y ? 0 : __x - __y;
}
#endif /* __USE_ISOC9X */
#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
#endif /* __GNUC__ */
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