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2be8a53de1
* modules/ldexpf-ieee-tests: New file. * tests/test-ldexpf-ieee.c: New file. * tests/test-ldexp-ieee.h: New file.
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Test of ldexp*() function family.
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Copyright (C) 2012 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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int exp;
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/* [MX] shaded specification in POSIX. */
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/* NaN. */
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for (exp = -100000; exp <= 100000; exp += 100000)
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ASSERT (ISNAN (LDEXP (NAN, exp)));
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/* Signed zero. */
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for (exp = -100000; exp <= 100000; exp += 100000)
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{
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DOUBLE z = LDEXP (L_(0.0), exp);
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ASSERT (z == L_(0.0));
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ASSERT (!signbit (z));
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}
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for (exp = -100000; exp <= 100000; exp += 100000)
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{
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DOUBLE z = LDEXP (MINUS_ZERO, exp);
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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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/* Infinity. */
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for (exp = -100000; exp <= 100000; exp += 100000)
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ASSERT (LDEXP (INFINITY, exp) == INFINITY);
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for (exp = -100000; exp <= 100000; exp += 100000)
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ASSERT (LDEXP (- INFINITY, exp) == - INFINITY);
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}
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