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99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/* Test of fmod*() function family.
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Copyright (C) 2012-2017 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 <http://www.gnu.org/licenses/>. */
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static void
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test_function (void)
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{
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/* [MX] shaded specification in POSIX. */
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/* NaN. */
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ASSERT (ISNAN (FMOD (NAN, L_(2.0))));
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ASSERT (ISNAN (FMOD (NAN, L_(0.0))));
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ASSERT (ISNAN (FMOD (L_(2.0), NAN)));
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ASSERT (ISNAN (FMOD (L_(0.0), NAN)));
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ASSERT (ISNAN (FMOD (NAN, NAN)));
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/* y is zero. */
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ASSERT (ISNAN (FMOD (L_(2.0), L_(0.0))));
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ASSERT (ISNAN (FMOD (L_(2.0), MINUS_ZERO)));
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ASSERT (ISNAN (FMOD (INFINITY, L_(0.0))));
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ASSERT (ISNAN (FMOD (INFINITY, MINUS_ZERO)));
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/* x is infinite. */
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ASSERT (ISNAN (FMOD (INFINITY, L_(2.0))));
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ASSERT (ISNAN (FMOD (INFINITY, - L_(2.0))));
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/* x is zero. */
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{
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DOUBLE z = FMOD (L_(0.0), L_(2.0));
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ASSERT (z == L_(0.0));
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ASSERT (!signbit (z));
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}
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{
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DOUBLE z = FMOD (MINUS_ZERO, L_(2.0));
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ASSERT (z == L_(0.0));
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ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
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}
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{
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DOUBLE z = FMOD (L_(0.0), - L_(2.0));
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ASSERT (z == L_(0.0));
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ASSERT (!signbit (z));
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}
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{
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DOUBLE z = FMOD (MINUS_ZERO, - L_(2.0));
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ASSERT (z == L_(0.0));
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ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
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}
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{
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DOUBLE z = FMOD (L_(0.0), INFINITY);
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ASSERT (z == L_(0.0));
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ASSERT (!signbit (z));
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}
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{
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DOUBLE z = FMOD (MINUS_ZERO, INFINITY);
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ASSERT (z == L_(0.0));
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ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
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}
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{
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DOUBLE z = FMOD (L_(0.0), - INFINITY);
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ASSERT (z == L_(0.0));
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ASSERT (!signbit (z));
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}
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{
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DOUBLE z = FMOD (MINUS_ZERO, - INFINITY);
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ASSERT (z == L_(0.0));
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ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO));
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}
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/* y is infinite. */
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{
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DOUBLE z = FMOD (L_(2.5), INFINITY);
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ASSERT (z == L_(2.5));
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}
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{
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DOUBLE z = FMOD (L_(2.5), - INFINITY);
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ASSERT (z == L_(2.5));
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}
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{
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DOUBLE z = FMOD (- L_(2.5), INFINITY);
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ASSERT (z == - L_(2.5));
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}
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{
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DOUBLE z = FMOD (- L_(2.5), - INFINITY);
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ASSERT (z == - L_(2.5));
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}
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}
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