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/* Miscellaneous tests which don't fit anywhere else.
Copyright (C) 2000 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 <stdio.h>
int
main (void)
{
int result = 0;
#ifndef NO_LONG_DOUBLE
{
long double x = 0x100000001ll + (long double) 0.5;
long double q;
long double r;
r = modfl (x, &q);
if (q != (long double) 0x100000001ll || r != 0.5)
{
printf ("modfl (%Lg, ...) failed\n", x);
result = 1;
}
}
# if __GNUC__ >= 3 || __GNUC_MINOR__ >= 96
{
long double x = LDBL_MAX / ldexpl (1.0L, LDBL_MANT_DIG + 1);
long double m;
int i;
# if LDBL_MANT_DIG == 64
m = 0xf.fffffffffffffffp-4L;
# else
# error "Please adjust"
# endif
for (i = 0; i < LDBL_MANT_DIG + 1; ++i, x *= 2.0L)
{
long double r;
int e;
printf ("2^%d: ", LDBL_MAX_EXP - (LDBL_MANT_DIG + 1) + i);
r = frexpl (x, &e);
if (r != m)
{
printf ("mantissa incorrect: %.20La\n", r);
result = 1;
continue;
}
if (e != LDBL_MAX_EXP - (LDBL_MANT_DIG + 1) + i)
{
printf ("exponent wrong %d (%.20Lg)\n", e, x);
result = 1;
continue;
}
puts ("ok");
}
}
# endif
#endif
{
double x = 0x100000001ll + (double) 0.5;
double q;
double r;
r = modf (x, &q);
if (q != (double) 0x100000001ll || r != 0.5)
{
printf ("modf (%g, ...) failed\n", x);
result = 1;
}
}
return result;
}
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