mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
581c785bf3
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
114 lines
2.9 KiB
C++
114 lines
2.9 KiB
C++
/* Test for the C++ implementation of issignaling.
|
|
Copyright (C) 2017-2022 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/>. */
|
|
|
|
#define _GNU_SOURCE 1
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
|
|
#include <limits>
|
|
|
|
/* There is no signaling_NaN for _Float128 in std::numeric_limits.
|
|
Include ieee754_float128.h and use the bitfields in the union
|
|
ieee854_float128.ieee_nan to build a signaling NaN. */
|
|
#if __HAVE_DISTINCT_FLOAT128
|
|
# include <ieee754_float128.h>
|
|
#endif
|
|
|
|
static bool errors;
|
|
|
|
static void
|
|
check (int actual, int expected, const char *actual_expr, int line)
|
|
{
|
|
if (actual != expected)
|
|
{
|
|
errors = true;
|
|
printf ("%s:%d: error: %s\n", __FILE__, line, actual_expr);
|
|
printf ("%s:%d: expected: %d\n", __FILE__, line, expected);
|
|
printf ("%s:%d: actual: %d\n", __FILE__, line, actual);
|
|
}
|
|
}
|
|
|
|
#define CHECK(actual, expected) \
|
|
check ((actual), (expected), #actual, __LINE__)
|
|
|
|
template <class T>
|
|
static void
|
|
check_type ()
|
|
{
|
|
typedef std::numeric_limits<T> limits;
|
|
CHECK (issignaling (T{0}), 0);
|
|
if (limits::has_infinity)
|
|
{
|
|
CHECK (issignaling (limits::infinity ()), 0);
|
|
CHECK (issignaling (-limits::infinity ()), 0);
|
|
}
|
|
if (limits::has_quiet_NaN)
|
|
CHECK (issignaling (limits::quiet_NaN ()), 0);
|
|
if (limits::has_signaling_NaN)
|
|
CHECK (issignaling (limits::signaling_NaN ()), 1);
|
|
}
|
|
|
|
#if __HAVE_DISTINCT_FLOAT128
|
|
static void
|
|
check_float128 ()
|
|
{
|
|
ieee854_float128 q;
|
|
|
|
q.d = 0;
|
|
CHECK (issignaling (q.d), 0);
|
|
|
|
/* Infinity. */
|
|
q.ieee.negative = 0;
|
|
q.ieee.exponent = 0x7FFF;
|
|
q.ieee.mantissa0 = 0x0000;
|
|
q.ieee.mantissa1 = 0x00000000;
|
|
q.ieee.mantissa2 = 0x00000000;
|
|
q.ieee.mantissa3 = 0x00000000;
|
|
CHECK (issignaling (q.d), 0);
|
|
|
|
/* Quiet NaN. */
|
|
q.ieee_nan.quiet_nan = 1;
|
|
q.ieee_nan.mantissa0 = 0x0000;
|
|
CHECK (issignaling (q.d), 0);
|
|
|
|
/* Still a quiet NaN. */
|
|
q.ieee_nan.quiet_nan = 1;
|
|
q.ieee_nan.mantissa0 = 0x4000;
|
|
CHECK (issignaling (q.d), 0);
|
|
|
|
/* Signaling NaN. */
|
|
q.ieee_nan.quiet_nan = 0;
|
|
q.ieee_nan.mantissa0 = 0x4000;
|
|
CHECK (issignaling (q.d), 1);
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
check_type<float> ();
|
|
check_type<double> ();
|
|
check_type<long double> ();
|
|
#if __HAVE_DISTINCT_FLOAT128
|
|
check_float128 ();
|
|
#endif
|
|
return errors;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|