mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* Test for powl
|
|
Copyright (C) 2011 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#include <float.h>
|
|
#include <ieee754.h>
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
int result = 0;
|
|
|
|
#ifndef NO_LONG_DOUBLE
|
|
# if LDBL_MANT_DIG == 64
|
|
{
|
|
long double x = 1e-20;
|
|
union ieee854_long_double u;
|
|
u.ieee.mantissa0 = 1;
|
|
u.ieee.mantissa1 = 1;
|
|
u.ieee.exponent = 0;
|
|
u.ieee.negative = 0;
|
|
(void) powl (0.2, u.d);
|
|
x = powl (x, 1.5);
|
|
if (fabsl (x - 1e-30) > 1e-10)
|
|
{
|
|
printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x);
|
|
result = 1;
|
|
}
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
return result;
|
|
}
|