mirror of
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0e0dc90965
Done through
sed -e 's/memcmp \([(][^()]*[)]\) != 0/!memeq \1/g' \
-e 's/memcmp \([(][^()]*[(][^()]*[)][^()]*[)]\) != 0/!memeq \1/g'
* tests/**/*.[hc]: Use !memeq instead of memcmp ... != 0.
* modules/*-tests (Dependencies): Add memeq.
112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
/* Test of copysignf() function.
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Copyright (C) 2010-2026 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2010-2011. */
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#include <config.h>
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#include <math.h>
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#include "signature.h"
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SIGNATURE_CHECK (copysignf, float, (float, float));
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#include "macros.h"
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#include "minus-zero.h"
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#include <string.h>
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volatile float x;
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volatile float y;
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float z;
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float zero = 0.0f;
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int
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main ()
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{
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/* A particular value in the first quadrant. */
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x = 0.6f;
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y = 0.8f;
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z = copysignf (x, y);
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ASSERT (z == 0.6f);
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/* A particular value in the second quadrant. */
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x = -0.6f;
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y = 0.8f;
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z = copysignf (x, y);
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ASSERT (z == 0.6f);
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/* A particular value in the third quadrant. */
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x = -0.6f;
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y = -0.8f;
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z = copysignf (x, y);
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ASSERT (z == -0.6f);
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/* A particular value in the fourth quadrant. */
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x = 0.6f;
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y = -0.8f;
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z = copysignf (x, y);
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ASSERT (z == -0.6f);
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/* From signed zero. */
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x = 1.0f;
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y = 0.0f;
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z = copysignf (x, y);
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ASSERT (z == 1.0f);
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x = 1.0f;
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y = minus_zerof;
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z = copysignf (x, y);
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/* Assume all gnulib targets support -0.0f, until proven otherwise. */
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ASSERT (z == -1.0f);
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x = -1.0f;
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y = 0.0f;
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z = copysignf (x, y);
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ASSERT (z == 1.0f);
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x = -1.0f;
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y = minus_zerof;
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z = copysignf (x, y);
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ASSERT (z == -1.0f);
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/* To signed zero. */
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x = 0.0f;
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y = 1.0f;
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z = copysignf (x, y);
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ASSERT (z == 0.0f);
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ASSERT (memeq (&z, &zero, sizeof z));
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x = 0.0f;
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y = -1.0f;
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z = copysignf (x, y);
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ASSERT (z == 0.0f);
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ASSERT (!memeq (&z, &zero, sizeof z));
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x = minus_zerof;
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y = 1.0f;
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z = copysignf (x, y);
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ASSERT (z == 0.0f);
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ASSERT (memeq (&z, &zero, sizeof z));
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x = minus_zerof;
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y = -1.0f;
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z = copysignf (x, y);
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ASSERT (z == 0.0f);
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ASSERT (!memeq (&z, &zero, sizeof z));
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return test_exit_status;
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}
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