-/* Test for exception handling functions of libm */
+/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de> and
+ Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* Tests for ISO C 9X 7.6: Floating-point environment */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#include <fenv.h>
#include <errno.h>
+#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <sys/resource.h>
/*
Since not all architectures might define all exceptions, we define
}
static void
-test_exceptions (const char *test_name, short int exception)
+test_exceptions (const char *test_name, short int exception,
+ int ignore_inexact)
{
printf ("Test: %s\n", test_name);
#ifdef FE_DIVBYZERO
"INVALID");
#endif
#ifdef FE_INEXACT
- test_single_exception (exception, INEXACT_EXC, FE_INEXACT,
- "INEXACT");
+ if (!ignore_inexact)
+ test_single_exception (exception, INEXACT_EXC, FE_INEXACT,
+ "INEXACT");
#endif
#ifdef FE_UNDERFLOW
test_single_exception (exception, UNDERFLOW_EXC, FE_UNDERFLOW,
#endif
}
+static void
+print_rounding (int rounding)
+{
+
+ switch (rounding)
+ {
+#ifdef FE_TONEAREST
+ case FE_TONEAREST:
+ printf ("TONEAREST");
+ break;
+#endif
+#ifdef FE_UPWARD
+ case FE_UPWARD:
+ printf ("UPWARD");
+ break;
+#endif
+#ifdef FE_DOWNWARD
+ case FE_DOWNWARD:
+ printf ("DOWNWARD");
+ break;
+#endif
+#ifdef FE_TOWARDZERO
+ case FE_TOWARDZERO:
+ printf ("TOWARDZERO");
+ break;
+#endif
+ }
+ printf (".\n");
+}
+
+
+static void
+test_rounding (const char *test_name, int rounding_mode)
+{
+ int curr_rounding = fegetround ();
+
+ printf ("Test: %s\n", test_name);
+ if (curr_rounding == rounding_mode)
+ {
+ printf (" Pass: Rounding mode is ");
+ print_rounding (curr_rounding);
+ }
+ else
+ {
+ ++count_errors;
+ printf (" Fail: Rounding mode is ");
+ print_rounding (curr_rounding);
+ }
+}
+
static void
set_single_exc (const char *test_name, int fe_exc, fexcept_t exception)
{
char str[200];
+ /* The standard allows the inexact exception to be set together with the
+ underflow and overflow exceptions. So ignore the inexact flag if the
+ others are raised. */
+ int ignore_inexact = (fe_exc & (UNDERFLOW_EXC | OVERFLOW_EXC)) != 0;
strcpy (str, test_name);
strcat (str, ": set flag, with rest not set");
feclearexcept (FE_ALL_EXCEPT);
feraiseexcept (exception);
- test_exceptions (str, fe_exc);
+ test_exceptions (str, fe_exc, ignore_inexact);
strcpy (str, test_name);
strcat (str, ": clear flag, rest also unset");
feclearexcept (exception);
- test_exceptions (str, NO_EXC);
+ test_exceptions (str, NO_EXC, ignore_inexact);
strcpy (str, test_name);
strcat (str, ": set flag, with rest set");
feraiseexcept (FE_ALL_EXCEPT ^ exception);
feraiseexcept (exception);
- test_exceptions (str, ALL_EXC);
+ test_exceptions (str, ALL_EXC, 0);
strcpy (str, test_name);
strcat (str, ": clear flag, leave rest set");
feclearexcept (exception);
- test_exceptions (str, ALL_EXC ^ fe_exc);
+ test_exceptions (str, ALL_EXC ^ fe_exc, 0);
}
static void
/* clear all exceptions and test if all are cleared */
feclearexcept (FE_ALL_EXCEPT);
test_exceptions ("feclearexcept (FE_ALL_EXCEPT) clears all exceptions",
- NO_EXC);
+ NO_EXC, 0);
/* raise all exceptions and test if all are raised */
feraiseexcept (FE_ALL_EXCEPT);
test_exceptions ("feraiseexcept (FE_ALL_EXCEPT) raises all exceptions",
- ALL_EXC);
+ ALL_EXC, 0);
feclearexcept (FE_ALL_EXCEPT);
-
#ifdef FE_DIVBYZERO
set_single_exc ("Set/Clear FE_DIVBYZERO", DIVBYZERO_EXC, FE_DIVBYZERO);
#endif
#endif
}
+/* Test that program aborts with no masked interrupts */
+static void
+feenv_nomask_test (const char *flag_name, int fe_exc)
+{
+#if defined FE_NOMASK_ENV
+ int status;
+ pid_t pid;
+ fenv_t saved;
+
+ fegetenv (&saved);
+ errno = 0;
+ fesetenv (FE_NOMASK_ENV);
+ status = errno;
+ fesetenv (&saved);
+ if (status == ENOSYS)
+ {
+ printf ("Test: not testing FE_NOMASK_ENV, it isn't implemented.\n");
+ return;
+ }
+
+ printf ("Test: after fesetenv (FE_NOMASK_ENV) processes will abort\n");
+ printf (" when feraiseexcept (%s) is called.\n", flag_name);
+ pid = fork ();
+ if (pid == 0)
+ {
+#ifdef RLIMIT_CORE
+ /* Try to avoid dumping core. */
+ struct rlimit core_limit;
+ core_limit.rlim_cur = 0;
+ core_limit.rlim_max = 0;
+ setrlimit (RLIMIT_CORE, &core_limit);
+#endif
+
+ fesetenv (FE_NOMASK_ENV);
+ feraiseexcept (fe_exc);
+ exit (2);
+ }
+ else if (pid < 0)
+ {
+ if (errno != ENOSYS)
+ {
+ printf (" Fail: Could not fork.\n");
+ ++count_errors;
+ }
+ else
+ printf (" `fork' not implemented, test ignored.\n");
+ }
+ else {
+ if (waitpid (pid, &status, 0) != pid)
+ {
+ printf (" Fail: waitpid call failed.\n");
+ ++count_errors;
+ }
+ else if (WIFSIGNALED (status) && WTERMSIG (status) == SIGFPE)
+ printf (" Pass: Process received SIGFPE.\n");
+ else
+ {
+ printf (" Fail: Process didn't receive signal and exited with status %d.\n",
+ status);
+ ++count_errors;
+ }
+ }
+#endif
+}
+
+/* Test that program doesn't abort with default environment */
+static void
+feenv_mask_test (const char *flag_name, int fe_exc)
+{
+ int status;
+ pid_t pid;
+
+ printf ("Test: after fesetenv (FE_DFL_ENV) processes will not abort\n");
+ printf (" when feraiseexcept (%s) is called.\n", flag_name);
+ pid = fork ();
+ if (pid == 0)
+ {
+#ifdef RLIMIT_CORE
+ /* Try to avoid dumping core. */
+ struct rlimit core_limit;
+ core_limit.rlim_cur = 0;
+ core_limit.rlim_max = 0;
+ setrlimit (RLIMIT_CORE, &core_limit);
+#endif
+
+ fesetenv (FE_DFL_ENV);
+ feraiseexcept (fe_exc);
+ exit (2);
+ }
+ else if (pid < 0)
+ {
+ if (errno != ENOSYS)
+ {
+ printf (" Fail: Could not fork.\n");
+ ++count_errors;
+ }
+ else
+ printf (" `fork' not implemented, test ignored.\n");
+ }
+ else {
+ if (waitpid (pid, &status, 0) != pid)
+ {
+ printf (" Fail: waitpid call failed.\n");
+ ++count_errors;
+ }
+ else if (WIFEXITED (status) && WEXITSTATUS (status) == 2)
+ printf (" Pass: Process exited normally.\n");
+ else
+ {
+ printf (" Fail: Process exited abnormally with status %d.\n",
+ status);
+ ++count_errors;
+ }
+ }
+}
+
+
+
+static void
+feenv_tests (void)
+{
+
+#ifdef FE_DIVBYZERO
+ feenv_nomask_test ("FE_DIVBYZERO", FE_DIVBYZERO);
+ feenv_mask_test ("FE_DIVBYZERO", FE_DIVBYZERO);
+#endif
+#ifdef FE_INVALID
+ feenv_nomask_test ("FE_INVALID", FE_INVALID);
+ feenv_mask_test ("FE_INVALID", FE_INVALID);
+#endif
+#ifdef FE_INEXACT
+ feenv_nomask_test ("FE_INEXACT", FE_INEXACT);
+ feenv_mask_test ("FE_INEXACT", FE_INEXACT);
+#endif
+#ifdef FE_UNDERFLOW
+ feenv_nomask_test ("FE_UNDERFLOW", FE_UNDERFLOW);
+ feenv_mask_test ("FE_UNDERFLOW", FE_UNDERFLOW);
+#endif
+#ifdef FE_OVERFLOW
+ feenv_nomask_test ("FE_OVERFLOW", FE_OVERFLOW);
+ feenv_mask_test ("FE_OVERFLOW", FE_OVERFLOW);
+#endif
+ fesetenv (FE_DFL_ENV);
+}
+
+
+/* IEC 559 and ISO C 9X define a default startup environment */
+static void
+initial_tests (void)
+{
+ test_exceptions ("Initially all exceptions should be cleared",
+ NO_EXC, 0);
+ test_rounding ("Rounding direction should be initalized to nearest",
+ FE_TONEAREST);
+}
+
int
main (void)
{
+ initial_tests ();
fe_tests ();
- /* _LIB_VERSION = _SVID;*/
+ feenv_tests ();
if (count_errors)
{
projects / kopensolaris-gnu / glibc.git / blobdiff