glibc/sysdeps/powerpc/fpu/test-powerpc-snan.c

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/* Test Signalling NaN in isnan, isinf etc functions.
Copyright (C) 2008-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 2005.
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/>. */
#define _GNU_SOURCE
#define __USE_GNU
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <string.h>
#include <math.h>
#include <float.h>
#include <fenv.h>
#include <signal.h>
#include <setjmp.h>
#include <errno.h>
int dest_offset;
char *dest_address;
double value = 123.456;
double zero = 0.0;
float SNANf;
double SNAN;
long double SNANl;
static sigjmp_buf sigfpe_buf;
void
init_signaling_nan()
{
union {
double _ld16;
double _d8;
unsigned int _ui4[4];
float _f4;
} nan_temp;
nan_temp._ui4[0] = 0x7fa00000;
SNANf = nan_temp._f4;
nan_temp._ui4[0] = 0x7ff40000;
nan_temp._ui4[1] = 0x00000000;
SNAN = nan_temp._d8;
nan_temp._ui4[0] = 0x7ff40000;
nan_temp._ui4[1] = 0x00000000;
nan_temp._ui4[2] = 0x00000000;
nan_temp._ui4[3] = 0x00000000;
SNANl = nan_temp._ld16;
}
static float
snan_float (void)
{
return SNANf;
}
static double
snan_double (void)
{
return SNAN;
}
typedef long double ldouble;
static ldouble
snan_ldouble (void)
{
return SNANl;
}
void
myFPsighandler(int signal,
siginfo_t *info,
void *context)
{
siglongjmp(sigfpe_buf, 0);
}
int
set_sigaction_FP(void)
{
struct sigaction sa;
/* register RT signal handler via sigaction */
sa.sa_flags = SA_SIGINFO;
sa.sa_sigaction = &myFPsighandler;
sigemptyset(&sa.sa_mask);
sigaction(SIGFPE, &sa, NULL);
return 0;
}
int
remove_sigaction_FP(void)
{
struct sigaction sa;
/* restore default RT signal handler via sigaction */
sa.sa_flags = SA_SIGINFO;
sa.sa_handler = SIG_DFL;
sigemptyset(&sa.sa_mask);
sigaction(SIGFPE, &sa, NULL);
return 0;
}
static int errors = 0;
static void
check (const char *testname, int result)
{
if (!result) {
printf ("Failure: %s\n", testname);
errors++;
}
}
#define TEST_FUNC(NAME, FLOAT) \
static void \
NAME (void) \
{ \
/* Variables are declared volatile to forbid some compiler \
optimizations. */ \
volatile FLOAT Inf_var, NaN_var, zero_var, one_var, SNaN_var; \
fenv_t saved_fenv; \
\
zero_var = 0.0; \
one_var = 1.0; \
NaN_var = zero_var / zero_var; \
SNaN_var = snan_##FLOAT (); \
Inf_var = one_var / zero_var; \
\
(void) &zero_var; \
(void) &one_var; \
(void) &NaN_var; \
(void) &SNaN_var; \
(void) &Inf_var; \
\
set_sigaction_FP (); \
fegetenv(&saved_fenv); \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnan(NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnan (NaN)", isnan (NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnan(-NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnan (-NaN)", isnan (-NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnan(SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnan (SNaN)", isnan (SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnan(-SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnan (-SNaN)", isnan (-SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isinf(NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isinf (NaN)", !isinf (NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isinf(-NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isinf (-NaN)", !isinf (-NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isinf(SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isinf (SNaN)", !isinf (SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isinf(-SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isinf (-SNaN)", !isinf (-SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isfinite(NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isfinite (NaN)", !isfinite (NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isfinite(-NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isfinite (-NaN)", !isfinite (-NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isfinite(SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isfinite (SNaN)", !isfinite (SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isfinite(-SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isfinite (-SNaN)", !isfinite (-SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnormal(NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnormal (NaN)", !isnormal (NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnormal(-NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnormal (-NaN)", !isnormal (-NaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnormal(SNaN) isnormal SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnormal (SNaN)", !isnormal (SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " isnormal(-SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " isnormal (-SNaN)", !isnormal (-SNaN_var)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " fpclassify(NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " fpclassify (NaN)", (fpclassify (NaN_var)==FP_NAN)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " fpclassify(-NaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " fpclassify (-NaN)", (fpclassify (-NaN_var)==FP_NAN)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " fpclassify(SNaN) isnormal SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " fpclassify (SNaN)", (fpclassify (SNaN_var)==FP_NAN)); \
} \
\
feclearexcept(FE_ALL_EXCEPT); \
feenableexcept (FE_ALL_EXCEPT); \
if (sigsetjmp(sigfpe_buf, 0)) \
{ \
printf (#FLOAT " fpclassify(-SNaN) raised SIGFPE\n"); \
errors++; \
} else { \
check (#FLOAT " fpclassify (-SNaN)", (fpclassify (-SNaN_var)==FP_NAN)); \
} \
\
fesetenv(&saved_fenv); /* restore saved fenv */ \
remove_sigaction_FP(); \
}
TEST_FUNC (float_test, float)
TEST_FUNC (double_test, double)
#ifndef NO_LONG_DOUBLE
TEST_FUNC (ldouble_test, ldouble)
#endif
static int
do_test (void)
{
init_signaling_nan();
float_test();
double_test();
#ifndef NO_LONG_DOUBLE
ldouble_test();
#endif
return errors != 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"