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81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/* Test iseqsig with excess precision.
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Copyright (C) 2016-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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<https://www.gnu.org/licenses/>. */
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#include <float.h>
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#include <math.h>
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#include <stdio.h>
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static int
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do_test (void)
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{
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int result = 0;
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if (FLT_EVAL_METHOD == 1 || FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 32)
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{
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/* Excess precision for float. */
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if (iseqsig (1.0f, 1.0f + (float) DBL_EPSILON))
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{
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puts ("iseqsig removes excess precision float -> double");
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result = 1;
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}
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else
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puts ("iseqsig preserves excess precision float -> double");
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if (iseqsig (__builtin_inff (), FLT_MAX * FLT_MAX))
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{
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puts ("iseqsig removes excess range float -> double");
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result = 1;
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}
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else
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puts ("iseqsig preserves excess range float -> double");
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}
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if (FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 64)
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{
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/* Excess precision for float and double. */
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if (iseqsig (1.0f, 1.0f + (float) LDBL_EPSILON))
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{
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puts ("iseqsig removes excess precision float -> long double");
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result = 1;
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}
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else
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puts ("iseqsig preserves excess precision float -> long double");
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if (iseqsig (1.0, 1.0 + (double) LDBL_EPSILON))
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{
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puts ("iseqsig removes excess precision double -> long double");
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result = 1;
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}
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else
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puts ("iseqsig preserves excess precision double -> long double");
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if (LDBL_MAX_EXP >= 2 * DBL_MAX_EXP)
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{
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if (iseqsig (__builtin_inf (), DBL_MAX * DBL_MAX))
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{
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puts ("iseqsig removes excess range double -> long double");
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result = 1;
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}
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else
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puts ("iseqsig preserves excess range double -> long double");
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}
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}
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return result;
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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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