mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* Test that tininess.h is correct for this architecture.
|
|
Copyright (C) 2012-2014 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 <fenv.h>
|
|
#include <float.h>
|
|
#include <stdio.h>
|
|
#include <tininess.h>
|
|
|
|
volatile float a = 0x1.fffp-126;
|
|
volatile float b = 0x1.0008p-1;
|
|
volatile float c;
|
|
volatile float m = FLT_MIN;
|
|
volatile float mm;
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
int result = 0;
|
|
#ifdef FE_UNDERFLOW
|
|
feclearexcept (FE_ALL_EXCEPT);
|
|
mm = m * m;
|
|
if (!fetestexcept (FE_UNDERFLOW))
|
|
{
|
|
puts ("underflow exception not supported at runtime, cannot test");
|
|
return 0;
|
|
}
|
|
feclearexcept (FE_ALL_EXCEPT);
|
|
c = a * b;
|
|
if (fetestexcept (FE_UNDERFLOW))
|
|
{
|
|
if (TININESS_AFTER_ROUNDING)
|
|
{
|
|
puts ("tininess.h says after rounding, "
|
|
"but detected before rounding");
|
|
result = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!TININESS_AFTER_ROUNDING)
|
|
{
|
|
puts ("tininess.h says before rounding, "
|
|
"but detected after rounding");
|
|
result = 1;
|
|
}
|
|
}
|
|
#else
|
|
puts ("underflow exception not supported at compile time, cannot test");
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|