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/* Copyright (C) 1991, 1992, 1993, 1994 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 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#ifdef __GNUC__
#include <sys/cdefs.h>
#define __need_Emath
#include <errno.h>
#ifdef __NO_MATH_INLINES
/* This is used when defining the functions themselves. Define them with
__ names, and with `static inline' instead of `extern inline' so the
bodies will always be used, never an external function call. */
#define __m81_u(x) __CONCAT(__,x)
#define __m81_inline static __inline
#else
#define __m81_u(x) x
#define __m81_inline extern __inline
#define __MATH_INLINES 1
#endif
#define __inline_mathop2(func, op) \
__m81_inline double \
__m81_u(func)(double __mathop_x) __attribute__((__const__)); \
__m81_inline double \
__m81_u(func)(double __mathop_x) \
{ \
double __result; \
__asm("f" __STRING(op) "%.x %1, %0" : "=f" (__result) : "f" (__mathop_x));\
return __result; \
}
#define __inline_mathop(op) __inline_mathop2(op, op)
__inline_mathop(acos)
__inline_mathop(asin)
__inline_mathop(atan)
__inline_mathop(cos)
__inline_mathop(sin)
__inline_mathop(tan)
__inline_mathop(cosh)
__inline_mathop(sinh)
__inline_mathop(tanh)
__inline_mathop2(exp, etox)
__inline_mathop2(fabs, abs)
__inline_mathop(log10)
__inline_mathop2(log, logn)
__inline_mathop(sqrt)
__inline_mathop2(__rint, int)
__inline_mathop2(__expm1, etoxm1)
#ifdef __USE_MISC
#ifndef __NO_MATH_INLINES
__inline_mathop2(rint, int)
__inline_mathop2(expm1, etoxm1)
#endif
__inline_mathop2(log1p, lognp1)
__inline_mathop(atanh)
#endif
__m81_inline double
__m81_u(__drem)(double __x, double __y) __attribute__ ((__const__));
__m81_inline double
__m81_u(__drem)(double __x, double __y)
{
double __result;
__asm("frem%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
return __result;
}
__m81_inline double
__m81_u(ldexp)(double __x, int __e) __attribute__ ((__const__));
__m81_inline double
__m81_u(ldexp)(double __x, int __e)
{
double __result;
double __double_e = (double) __e;
__asm("fscale%.x %1, %0" : "=f" (__result) : "f" (__double_e), "0" (__x));
return __result;
}
__m81_inline double
__m81_u(fmod)(double __x, double __y) __attribute__ ((__const__));
__m81_inline double
__m81_u(fmod)(double __x, double __y)
{
double __result;
__asm("fmod%.x %1, %0" : "=f" (__result) : "f" (__y), "0" (__x));
return __result;
}
__m81_inline double
__m81_u(frexp)(double __value, int *__expptr)
{
double __mantissa, __exponent;
__asm("fgetexp%.x %1, %0" : "=f" (__exponent) : "f" (__value));
__asm("fgetman%.x %1, %0" : "=f" (__mantissa) : "f" (__value));
*__expptr = (int) __exponent;
return __mantissa;
}
__m81_inline double
__m81_u(floor)(double __x) __attribute__ ((__const__));
__m81_inline double
__m81_u(floor)(double __x)
{
double __result;
unsigned long int __ctrl_reg;
__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));
/* Set rounding towards negative infinity. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" ((__ctrl_reg & ~0x10) | 0x20));
/* Convert X to an integer, using -Inf rounding. */
__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));
/* Restore the previous rounding mode. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg));
return __result;
}
__m81_inline double
__m81_u(pow)(double __x, double __y) __attribute__ ((__const__));
__m81_inline double
__m81_u(pow)(double __x, double __y)
{
double __result;
if (__x == 0.0)
{
if (__y <= 0.0)
__result = __infnan (EDOM);
else
__result = 0.0;
}
else if (__y == 0.0 || __x == 1.0)
__result = 1.0;
else if (__y == 1.0)
__result = __x;
else if (__y == 2.0)
__result = __x * __x;
else if (__x == 10.0)
__asm("ftentox%.x %1, %0" : "=f" (__result) : "f" (__y));
else if (__x == 2.0)
__asm("ftwotox%.x %1, %0" : "=f" (__result) : "f" (__y));
else if (__x < 0.0)
{
double __temp = __m81_u (__rint) (__y);
if (__y == __temp)
{
int i = (int) __y;
__result = __m81_u (exp) (__y * __m81_u (log) (-__x));
if (i & 1)
__result = -__result;
}
else
__result = __infnan (EDOM);
}
else
__result = __m81_u(exp)(__y * __m81_u(log)(__x));
return __result;
}
__m81_inline double
__m81_u(ceil)(double __x) __attribute__ ((__const__));
__m81_inline double
__m81_u(ceil)(double __x)
{
double __result;
unsigned long int __ctrl_reg;
__asm __volatile__ ("fmove%.l %!, %0" : "=dm" (__ctrl_reg));
/* Set rounding towards positive infinity. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg | 0x30));
/* Convert X to an integer, using +Inf rounding. */
__asm __volatile__ ("fint%.x %1, %0" : "=f" (__result) : "f" (__x));
/* Restore the previous rounding mode. */
__asm __volatile__ ("fmove%.l %0, %!" : /* No outputs. */
: "dmi" (__ctrl_reg));
return __result;
}
__m81_inline double
__m81_u(modf)(double __value, double *__iptr)
{
double __modf_int = __m81_u(floor)(__value);
*__iptr = __modf_int;
return __value - __modf_int;
}
__m81_inline int
__m81_u(__isinf)(double __value) __attribute__ ((__const__));
__m81_inline int
__m81_u(__isinf)(double __value)
{
/* There is no branch-condition for infinity,
so we must extract and examine the condition codes manually. */
unsigned long int __fpsr;
__asm("ftst%.x %1\n"
"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));
return (__fpsr & (2 << (3 * 8))) ? (__value < 0 ? -1 : 1) : 0;
}
__m81_inline int
__m81_u(__isnan)(double __value) __attribute__ ((__const__));
__m81_inline int
__m81_u(__isnan)(double __value)
{
char __result;
__asm("ftst%.x %1\n"
"fsun %0" : "=dm" (__result) : "f" (__value));
return __result;
}
__m81_inline int
__m81_u(__isinfl)(long double __value) __attribute__ ((__const__));
__m81_inline int
__m81_u(__isinfl)(long double __value)
{
/* There is no branch-condition for infinity,
so we must extract and examine the condition codes manually. */
unsigned long int __fpsr;
__asm("ftst%.x %1\n"
"fmove%.l %/fpsr, %0" : "=dm" (__fpsr) : "f" (__value));
return (__fpsr & (2 << (3 * 8))) ? (__value < 0 ? -1 : 1) : 0;
}
__m81_inline int
__m81_u(__isnanl)(long double __value) __attribute__ ((__const__));
__m81_inline int
__m81_u(__isnanl)(long double __value)
{
char __result;
__asm("ftst%.x %1\n"
"fsun %0" : "=dm" (__result) : "f" (__value));
return __result;
}
#endif /* GCC. */
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