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44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* Test of exp2*() function family.
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Copyright (C) 2012-2026 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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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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/* Underflow. */
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{
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volatile DOUBLE z = EXP2 (-100000.0);
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ASSERT (z == L_(0.0));
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ASSERT (!signbit (z));
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}
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/* NaN. */
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ASSERT (ISNAN (EXP2 (NAN)));
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/* Zero. */
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ASSERT (EXP2 (L_(0.0)) == L_(1.0));
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ASSERT (EXP2 (MINUS_ZERO) == L_(1.0));
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/* Infinity. */
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{
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DOUBLE z = EXP2 (- 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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ASSERT (EXP2 (INFINITY) == INFINITY);
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}
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