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