2016-08-10 21:01:08 +00:00
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/* Test fegetexceptflag and fesetexceptflag.
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2022-01-01 18:54:23 +00:00
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Copyright (C) 2016-2022 Free Software Foundation, Inc.
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2016-08-10 21:01:08 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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2016-08-10 21:01:08 +00:00
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#include <fenv.h>
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#include <stdio.h>
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#include <math-tests.h>
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2016-08-12 17:34:01 +00:00
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/* Like feraiseexcept, but raise exactly the specified exceptions EXC,
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without possibly raising "inexact" together with "overflow" or
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"underflow" as permitted by ISO C. (This is not used with traps
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enabled, so side-effects from raising and then clearing "inexact"
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are irrelevant.) */
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static int
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feraiseexcept_exact (int exc)
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{
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#ifdef FE_INEXACT
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int mask = 0;
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#ifdef FE_OVERFLOW
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mask |= FE_OVERFLOW;
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#endif
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#ifdef FE_UNDERFLOW
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mask |= FE_UNDERFLOW;
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#endif
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if ((exc & FE_INEXACT) != 0
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|| (exc & mask) == 0
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|| fetestexcept (FE_INEXACT) != 0)
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return feraiseexcept (exc);
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int ret = feraiseexcept (exc);
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feclearexcept (FE_INEXACT);
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return ret;
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#else
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return feraiseexcept (exc);
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#endif
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}
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2016-08-10 21:01:08 +00:00
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static int
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test_set (int initial, const fexcept_t *saved, int mask, int expected)
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{
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int result = 0;
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feclearexcept (FE_ALL_EXCEPT);
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printf ("Testing set: initial exceptions %x, mask %x, expected %x\n",
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(unsigned int) initial, (unsigned int) mask,
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(unsigned int) expected);
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2016-08-12 17:34:01 +00:00
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int ret = feraiseexcept_exact (initial);
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2016-08-10 21:01:08 +00:00
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if (ret != 0)
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{
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puts ("feraiseexcept failed");
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2017-01-05 23:15:47 +00:00
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if (initial == 0 || EXCEPTION_TESTS (float))
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{
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puts ("failure of feraiseexcept was unexpected");
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result = 1;
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}
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else
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puts ("failure of feraiseexcept OK, skipping further tests");
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2016-08-10 21:01:08 +00:00
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return result;
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}
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ret = fesetexceptflag (saved, mask);
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if (ret != 0)
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{
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puts ("fesetexceptflag failed");
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result = 1;
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}
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else
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puts ("fesetexceptflag succeeded");
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ret = fetestexcept (FE_ALL_EXCEPT);
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if (ret != expected)
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{
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printf ("raised exceptions %x, expected %x\n",
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(unsigned int) ret, (unsigned int) expected);
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result = 1;
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}
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return result;
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}
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static int
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test_except (int exc, const char *exc_name)
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{
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int result = 0;
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printf ("Testing %s\n", exc_name);
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feclearexcept (FE_ALL_EXCEPT);
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fexcept_t clear_saved_exc, clear_saved_all;
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int ret = fegetexceptflag (&clear_saved_exc, exc);
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if (ret == 0)
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printf ("fegetexceptflag (%s) succeeded\n", exc_name);
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else
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{
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printf ("fegetexceptflag (%s) failed\n", exc_name);
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result = 1;
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return result;
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}
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ret = fegetexceptflag (&clear_saved_all, FE_ALL_EXCEPT);
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if (ret == 0)
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puts ("fegetexceptflag (FE_ALL_EXCEPT) succeeded");
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else
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{
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puts ("fegetexceptflag (FE_ALL_EXCEPT) failed");
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result = 1;
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return result;
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}
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2016-08-12 17:34:01 +00:00
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ret = feraiseexcept_exact (exc);
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2016-08-10 21:01:08 +00:00
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if (ret == 0)
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printf ("feraiseexcept (%s) succeeded\n", exc_name);
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else
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{
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printf ("feraiseexcept (%s) failed\n", exc_name);
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if (exc == 0 || EXCEPTION_TESTS (float))
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{
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puts ("failure of feraiseexcept was unexpected");
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result = 1;
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}
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else
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puts ("failure of feraiseexcept OK, skipping further tests");
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return result;
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}
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fexcept_t set_saved_exc, set_saved_all;
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ret = fegetexceptflag (&set_saved_exc, exc);
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if (ret == 0)
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printf ("fegetexceptflag (%s) succeeded\n", exc_name);
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else
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{
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printf ("fegetexceptflag (%s) failed\n", exc_name);
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result = 1;
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return result;
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}
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ret = fegetexceptflag (&set_saved_all, FE_ALL_EXCEPT);
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if (ret == 0)
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puts ("fegetexceptflag (FE_ALL_EXCEPT) succeeded");
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else
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{
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puts ("fegetexceptflag (FE_ALL_EXCEPT) failed");
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result = 1;
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return result;
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}
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result |= test_set (0, &set_saved_exc, exc, exc);
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result |= test_set (0, &set_saved_all, exc, exc);
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result |= test_set (0, &set_saved_all, FE_ALL_EXCEPT, exc);
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result |= test_set (0, &clear_saved_exc, exc, 0);
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result |= test_set (0, &clear_saved_all, exc, 0);
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result |= test_set (0, &clear_saved_all, FE_ALL_EXCEPT, 0);
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result |= test_set (exc, &set_saved_exc, exc, exc);
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result |= test_set (exc, &set_saved_all, exc, exc);
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result |= test_set (exc, &set_saved_all, FE_ALL_EXCEPT, exc);
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result |= test_set (exc, &clear_saved_exc, exc, 0);
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result |= test_set (exc, &clear_saved_all, exc, 0);
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result |= test_set (exc, &clear_saved_all, FE_ALL_EXCEPT, 0);
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result |= test_set (FE_ALL_EXCEPT, &set_saved_exc, exc, FE_ALL_EXCEPT);
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result |= test_set (FE_ALL_EXCEPT, &set_saved_all, exc, FE_ALL_EXCEPT);
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result |= test_set (FE_ALL_EXCEPT, &set_saved_all, FE_ALL_EXCEPT, exc);
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result |= test_set (FE_ALL_EXCEPT, &clear_saved_exc, exc,
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FE_ALL_EXCEPT & ~exc);
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result |= test_set (FE_ALL_EXCEPT, &clear_saved_all, exc,
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FE_ALL_EXCEPT & ~exc);
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result |= test_set (FE_ALL_EXCEPT, &clear_saved_all, FE_ALL_EXCEPT, 0);
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return result;
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}
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static int
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do_test (void)
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{
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int result = 0;
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result |= test_except (0, "0");
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result |= test_except (FE_ALL_EXCEPT, "FE_ALL_EXCEPT");
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#ifdef FE_DIVBYZERO
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result |= test_except (FE_DIVBYZERO, "FE_DIVBYZERO");
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#endif
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#ifdef FE_INEXACT
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result |= test_except (FE_INEXACT, "FE_INEXACT");
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#endif
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#ifdef FE_INVALID
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result |= test_except (FE_INVALID, "FE_INVALID");
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#endif
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#ifdef FE_OVERFLOW
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result |= test_except (FE_OVERFLOW, "FE_OVERFLOW");
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#endif
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#ifdef FE_UNDERFLOW
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result |= test_except (FE_UNDERFLOW, "FE_UNDERFLOW");
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#endif
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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