/* Test of splitting a double into fraction and mantissa.
Copyright (C) 2012 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see . */
#include
#include
#include "isnand-nolibm.h"
#include "minus-zero.h"
#include "infinity.h"
#include "nan.h"
#include "macros.h"
int
main ()
{
/* [MX] shaded specification in POSIX. */
/* NaN. */
{
int exp = -9999;
double mantissa;
mantissa = frexp (NaNd (), &exp);
ASSERT (isnand (mantissa));
}
/* Signed zero. */
{
int exp = -9999;
double mantissa;
mantissa = frexp (0.0, &exp);
ASSERT (mantissa == 0.0);
ASSERT (!signbit (mantissa));
ASSERT (exp == 0);
}
{
int exp = -9999;
double mantissa;
mantissa = frexp (minus_zerod, &exp);
ASSERT (mantissa == 0.0);
ASSERT (!!signbit (mantissa) == !!signbit (minus_zerod));
ASSERT (exp == 0);
}
/* Infinity. */
{
int exp = -9999;
double mantissa;
mantissa = frexp (Infinityd (), &exp);
ASSERT (mantissa == Infinityd ());
}
return 0;
}