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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/math/test-snan.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/math/test-snan.c')
-rw-r--r-- | REORG.TODO/math/test-snan.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/REORG.TODO/math/test-snan.c b/REORG.TODO/math/test-snan.c new file mode 100644 index 0000000000..ffc8bf4bca --- /dev/null +++ b/REORG.TODO/math/test-snan.c @@ -0,0 +1,145 @@ +/* Test signaling NaNs in issignaling, isnan, isinf, and similar functions. + Copyright (C) 2008-2017 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 1 +#include <stdio.h> +#include <math.h> +#include <float.h> +#include <fenv.h> +#include <signal.h> +#include <setjmp.h> + +#include <math-tests.h> + + +static sigjmp_buf sigfpe_buf; + +static void +myFPsighandler (int signal) +{ + siglongjmp (sigfpe_buf, 1); +} + +static int errors = 0; + +#define CHECK(testname, expr) \ + do { \ + feclearexcept (FE_ALL_EXCEPT); \ + feenableexcept (FE_ALL_EXCEPT); \ + if (sigsetjmp (sigfpe_buf, 0)) \ + { \ + printf ("%s raised SIGFPE\n", testname); \ + ++errors; \ + } \ + else if (!(expr)) \ + { \ + printf ("Failure: %s\n", testname); \ + ++errors; \ + } \ + } while (0) + +#define TEST_FUNC(NAME, FLOAT, SUFFIX) \ +static void \ +NAME (void) \ +{ \ + /* Variables are declared volatile to forbid some compiler \ + optimizations. */ \ + volatile FLOAT Inf_var, qNaN_var, zero_var, one_var; \ + /* A sNaN is only guaranteed to be representable in variables with */ \ + /* static (or thread-local) storage duration. */ \ + static volatile FLOAT sNaN_var = __builtin_nans ## SUFFIX (""); \ + static volatile FLOAT minus_sNaN_var = -__builtin_nans ## SUFFIX (""); \ + fenv_t saved_fenv; \ + \ + zero_var = 0.0; \ + one_var = 1.0; \ + qNaN_var = __builtin_nan ## SUFFIX (""); \ + Inf_var = one_var / zero_var; \ + \ + (void) &zero_var; \ + (void) &one_var; \ + (void) &qNaN_var; \ + (void) &sNaN_var; \ + (void) &minus_sNaN_var; \ + (void) &Inf_var; \ + \ + fegetenv (&saved_fenv); \ + \ + CHECK (#FLOAT " issignaling (qNaN)", !issignaling (qNaN_var)); \ + CHECK (#FLOAT " issignaling (-qNaN)", !issignaling (-qNaN_var)); \ + CHECK (#FLOAT " issignaling (sNaN)", \ + SNAN_TESTS (FLOAT) ? issignaling (sNaN_var) : 1); \ + CHECK (#FLOAT " issignaling (-sNaN)", \ + SNAN_TESTS (FLOAT) ? issignaling (minus_sNaN_var) : 1); \ + CHECK (#FLOAT " isnan (qNaN)", isnan (qNaN_var)); \ + CHECK (#FLOAT " isnan (-qNaN)", isnan (-qNaN_var)); \ + CHECK (#FLOAT " isnan (sNaN)", \ + SNAN_TESTS (FLOAT) ? isnan (sNaN_var) : 1); \ + CHECK (#FLOAT " isnan (-sNaN)", \ + SNAN_TESTS (FLOAT) ? isnan (minus_sNaN_var) : 1); \ + CHECK (#FLOAT " isinf (qNaN)", !isinf (qNaN_var)); \ + CHECK (#FLOAT " isinf (-qNaN)", !isinf (-qNaN_var)); \ + CHECK (#FLOAT " isinf (sNaN)", \ + SNAN_TESTS (FLOAT) ? !isinf (sNaN_var) : 1); \ + CHECK (#FLOAT " isinf (-sNaN)", \ + SNAN_TESTS (FLOAT) ? !isinf (minus_sNaN_var) : 1); \ + CHECK (#FLOAT " isfinite (qNaN)", !isfinite (qNaN_var)); \ + CHECK (#FLOAT " isfinite (-qNaN)", !isfinite (-qNaN_var)); \ + CHECK (#FLOAT " isfinite (sNaN)", \ + SNAN_TESTS (FLOAT) ? !isfinite (sNaN_var) : 1); \ + CHECK (#FLOAT " isfinite (-sNaN)", \ + SNAN_TESTS (FLOAT) ? !isfinite (minus_sNaN_var) : 1); \ + CHECK (#FLOAT " isnormal (qNaN)", !isnormal (qNaN_var)); \ + CHECK (#FLOAT " isnormal (-qNaN)", !isnormal (-qNaN_var)); \ + CHECK (#FLOAT " isnormal (sNaN)", \ + SNAN_TESTS (FLOAT) ? !isnormal (sNaN_var) : 1); \ + CHECK (#FLOAT " isnormal (-sNaN)", \ + SNAN_TESTS (FLOAT) ? !isnormal (minus_sNaN_var) : 1); \ + CHECK (#FLOAT " fpclassify (qNaN)", (fpclassify (qNaN_var)==FP_NAN)); \ + CHECK (#FLOAT " fpclassify (-qNaN)", (fpclassify (-qNaN_var)==FP_NAN)); \ + CHECK (#FLOAT " fpclassify (sNaN)", \ + SNAN_TESTS (FLOAT) ? fpclassify (sNaN_var) == FP_NAN : 1); \ + CHECK (#FLOAT " fpclassify (-sNaN)", \ + SNAN_TESTS (FLOAT) ? fpclassify (minus_sNaN_var) == FP_NAN : 1); \ + \ + fesetenv (&saved_fenv); /* restore saved fenv */ \ +} \ + +TEST_FUNC (float_test, float, f) +TEST_FUNC (double_test, double, ) +#ifndef NO_LONG_DOUBLE +TEST_FUNC (ldouble_test, long double, l) +#endif + +static int +do_test (void) +{ + signal (SIGFPE, &myFPsighandler); + + float_test (); + double_test (); +#ifndef NO_LONG_DOUBLE + ldouble_test (); +#endif + + return errors != 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |