57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/* Copyright (C) 1996, 1997, 1999 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., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <math.h>
|
|
#include "mathimpl.h"
|
|
|
|
#ifndef SUFF
|
|
#define SUFF
|
|
#endif
|
|
#ifndef float_type
|
|
#define float_type double
|
|
#endif
|
|
|
|
#define CONCATX(a,b) __CONCAT(a,b)
|
|
#define s(name) CONCATX(name,SUFF)
|
|
#define m81(func) __m81_u(s(func))
|
|
|
|
float_type
|
|
s(__modf) (float_type x, float_type *iptr)
|
|
{
|
|
float_type x_int, result;
|
|
unsigned long x_cond;
|
|
|
|
__asm ("fintrz%.x %1, %0" : "=f" (x_int) : "f" (x));
|
|
*iptr = x_int;
|
|
x_cond = __m81_test (x);
|
|
if (x_cond & __M81_COND_INF)
|
|
{
|
|
result = 0;
|
|
if (x_cond & __M81_COND_NEG)
|
|
result = -result;
|
|
}
|
|
else if (x_cond & __M81_COND_ZERO)
|
|
result = x;
|
|
else
|
|
result = x - x_int;
|
|
return result;
|
|
}
|
|
|
|
#define weak_aliasx(a,b) weak_alias(a,b)
|
|
weak_aliasx(s(__modf), s(modf))
|