glibc/math/test-iseqsig-excess-precision.c
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

81 lines
2.3 KiB
C

/* Test iseqsig with excess precision.
Copyright (C) 2016-2022 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 <float.h>
#include <math.h>
#include <stdio.h>
static int
do_test (void)
{
int result = 0;
if (FLT_EVAL_METHOD == 1 || FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 32)
{
/* Excess precision for float. */
if (iseqsig (1.0f, 1.0f + (float) DBL_EPSILON))
{
puts ("iseqsig removes excess precision float -> double");
result = 1;
}
else
puts ("iseqsig preserves excess precision float -> double");
if (iseqsig (__builtin_inff (), FLT_MAX * FLT_MAX))
{
puts ("iseqsig removes excess range float -> double");
result = 1;
}
else
puts ("iseqsig preserves excess range float -> double");
}
if (FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 64)
{
/* Excess precision for float and double. */
if (iseqsig (1.0f, 1.0f + (float) LDBL_EPSILON))
{
puts ("iseqsig removes excess precision float -> long double");
result = 1;
}
else
puts ("iseqsig preserves excess precision float -> long double");
if (iseqsig (1.0, 1.0 + (double) LDBL_EPSILON))
{
puts ("iseqsig removes excess precision double -> long double");
result = 1;
}
else
puts ("iseqsig preserves excess precision double -> long double");
if (LDBL_MAX_EXP >= 2 * DBL_MAX_EXP)
{
if (iseqsig (__builtin_inf (), DBL_MAX * DBL_MAX))
{
puts ("iseqsig removes excess range double -> long double");
result = 1;
}
else
puts ("iseqsig preserves excess range double -> long double");
}
}
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"