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Diffstat (limited to 'gl/tests/test-signbit.c')
| -rw-r--r-- | gl/tests/test-signbit.c | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/gl/tests/test-signbit.c b/gl/tests/test-signbit.c deleted file mode 100644 index e8ea097ce4..0000000000 --- a/gl/tests/test-signbit.c +++ /dev/null @@ -1,177 +0,0 @@ -/* Test of signbit() substitute. - Copyright (C) 2007-2013 Free Software Foundation, Inc. - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ - -/* Written by Bruno Haible <bruno@clisp.org>, 2007. */ - -#include <config.h> - -#include <math.h> - -/* signbit must be a macro. */ -#ifndef signbit -# error missing declaration -#endif - -#include <float.h> -#include <limits.h> - -#include "minus-zero.h" -#include "infinity.h" -#include "macros.h" - -float zerof = 0.0f; -double zerod = 0.0; -long double zerol = 0.0L; - -static void -test_signbitf () -{ - /* Finite values. */ - ASSERT (!signbit (3.141f)); - ASSERT (!signbit (3.141e30f)); - ASSERT (!signbit (3.141e-30f)); - ASSERT (signbit (-2.718f)); - ASSERT (signbit (-2.718e30f)); - ASSERT (signbit (-2.718e-30f)); - /* Zeros. */ - ASSERT (!signbit (0.0f)); - if (1.0f / minus_zerof < 0) - ASSERT (signbit (minus_zerof)); - else - ASSERT (!signbit (minus_zerof)); - /* Infinite values. */ - ASSERT (!signbit (Infinityf ())); - ASSERT (signbit (- Infinityf ())); - /* Quiet NaN. */ - (void) signbit (zerof / zerof); -#if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT - /* Signalling NaN. */ - { - #define NWORDS \ - ((sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) - typedef union { float value; unsigned int word[NWORDS]; } memory_float; - memory_float m; - m.value = zerof / zerof; -# if FLT_EXPBIT0_BIT > 0 - m.word[FLT_EXPBIT0_WORD] ^= (unsigned int) 1 << (FLT_EXPBIT0_BIT - 1); -# else - m.word[FLT_EXPBIT0_WORD + (FLT_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] - ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1); -# endif - if (FLT_EXPBIT0_WORD < NWORDS / 2) - m.word[FLT_EXPBIT0_WORD + 1] |= (unsigned int) 1 << FLT_EXPBIT0_BIT; - else - m.word[0] |= (unsigned int) 1; - (void) signbit (m.value); - #undef NWORDS - } -#endif -} - -static void -test_signbitd () -{ - /* Finite values. */ - ASSERT (!signbit (3.141)); - ASSERT (!signbit (3.141e30)); - ASSERT (!signbit (3.141e-30)); - ASSERT (signbit (-2.718)); - ASSERT (signbit (-2.718e30)); - ASSERT (signbit (-2.718e-30)); - /* Zeros. */ - ASSERT (!signbit (0.0)); - if (1.0 / minus_zerod < 0) - ASSERT (signbit (minus_zerod)); - else - ASSERT (!signbit (minus_zerod)); - /* Infinite values. */ - ASSERT (!signbit (Infinityd ())); - ASSERT (signbit (- Infinityd ())); - /* Quiet NaN. */ - (void) signbit (zerod / zerod); -#if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT - /* Signalling NaN. */ - { - #define NWORDS \ - ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) - typedef union { double value; unsigned int word[NWORDS]; } memory_double; - memory_double m; - m.value = zerod / zerod; -# if DBL_EXPBIT0_BIT > 0 - m.word[DBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (DBL_EXPBIT0_BIT - 1); -# else - m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] - ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1); -# endif - m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] - |= (unsigned int) 1 << DBL_EXPBIT0_BIT; - (void) signbit (m.value); - #undef NWORDS - } -#endif -} - -static void -test_signbitl () -{ - /* Finite values. */ - ASSERT (!signbit (3.141L)); - ASSERT (!signbit (3.141e30L)); - ASSERT (!signbit (3.141e-30L)); - ASSERT (signbit (-2.718L)); - ASSERT (signbit (-2.718e30L)); - ASSERT (signbit (-2.718e-30L)); - /* Zeros. */ - ASSERT (!signbit (0.0L)); - if (1.0L / minus_zerol < 0) - ASSERT (signbit (minus_zerol)); - else - ASSERT (!signbit (minus_zerol)); - /* Infinite values. */ - ASSERT (!signbit (Infinityl ())); - ASSERT (signbit (- Infinityl ())); - /* Quiet NaN. */ - (void) signbit (zerol / zerol); -#if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT - /* Signalling NaN. */ - { - #define NWORDS \ - ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)) - typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double; - memory_long_double m; - m.value = zerol / zerol; -# if LDBL_EXPBIT0_BIT > 0 - m.word[LDBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (LDBL_EXPBIT0_BIT - 1); -# else - m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] - ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1); -# endif - m.word[LDBL_EXPBIT0_WORD + (LDBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)] - |= (unsigned int) 1 << LDBL_EXPBIT0_BIT; - (void) signbit (m.value); - #undef NWORDS - } -#endif -} - -int -main () -{ - test_signbitf (); - test_signbitd (); - test_signbitl (); - return 0; -} |