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/* Implement modf for m68k.
Copyright (C) 1996-2020 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
<https://www.gnu.org/licenses/>. */
#include <math.h>
#include "mathimpl.h"
FLOAT
M_DECL_FUNC (__modf) (FLOAT x, FLOAT *iptr)
{
FLOAT 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;
}
declare_mgen_alias (__modf, modf)
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