Mercurial > gnulib
view tests/test-ldexp-ieee.h @ 40227:5207eb0dcd2a
tests: Avoid havoc with "gcc -fcheck-pointer-bounds".
* tests/test-fprintf-posix2.c: Skip the test when -fcheck-pointer-bounds
is in use.
* tests/test-printf-posix2.c: Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 10 Mar 2019 17:09:30 +0100 |
parents | b06060465f09 |
children |
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/* Test of ldexp*() function family. Copyright (C) 2012-2019 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ static void test_function (void) { int exp; /* [MX] shaded specification in POSIX. */ /* NaN. */ for (exp = -100000; exp <= 100000; exp += 100000) ASSERT (ISNAN (LDEXP (NAN, exp))); /* Signed zero. */ for (exp = -100000; exp <= 100000; exp += 100000) { DOUBLE z = LDEXP (L_(0.0), exp); ASSERT (z == L_(0.0)); ASSERT (!signbit (z)); } for (exp = -100000; exp <= 100000; exp += 100000) { DOUBLE z = LDEXP (MINUS_ZERO, exp); ASSERT (z == L_(0.0)); ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO)); } /* Infinity. */ for (exp = -100000; exp <= 100000; exp += 100000) ASSERT (LDEXP (INFINITY, exp) == INFINITY); for (exp = -100000; exp <= 100000; exp += 100000) ASSERT (LDEXP (- INFINITY, exp) == - INFINITY); }