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Fix undefined behaviour. * lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to 'unsigned int', to avoid shift operations on 'int'. * lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size. * tests/test-count-leading-zeros.c (main): Use a random number that has as many bits as TYPE, not only 2*15 or 2*31 bits. * tests/test-count-trailing-zeros.c (main): Likewise. * tests/test-count-one-bits.c (main): Likewise. * tests/test-memmem.c: Don't include "null-ptr.h". (main): Use zerosize_ptr() instead of null_ptr(). * modules/memmem-tests (Files): Remove tests/null-ptr.h.
author Bruno Haible <bruno@clisp.org>
date Sat, 09 Mar 2019 20:32:25 +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)
{
  /* [MX] shaded specification in POSIX.  */

  /* NaN.  */
  ASSERT (ISNAN (FMA (NAN, L_(3.0), L_(5.0))));
  ASSERT (ISNAN (FMA (NAN, L_(0.0), L_(5.0))));
  ASSERT (ISNAN (FMA (L_(2.0), NAN, L_(5.0))));
  ASSERT (ISNAN (FMA (L_(0.0), NAN, L_(5.0))));
  ASSERT (ISNAN (FMA (NAN, NAN, L_(5.0))));
  ASSERT (ISNAN (FMA (NAN, L_(3.0), NAN)));
  ASSERT (ISNAN (FMA (NAN, L_(0.0), NAN)));
  ASSERT (ISNAN (FMA (L_(2.0), NAN, NAN)));
  ASSERT (ISNAN (FMA (L_(0.0), NAN, NAN)));
  ASSERT (ISNAN (FMA (NAN, NAN, NAN)));

  /* Infinity.  */
  ASSERT (ISNAN (FMA (INFINITY, L_(2.0), - INFINITY)));
  ASSERT (ISNAN (FMA (INFINITY, - L_(2.0), INFINITY)));
  ASSERT (ISNAN (FMA (- INFINITY, L_(2.0), INFINITY)));
  ASSERT (ISNAN (FMA (- INFINITY, - L_(2.0), - INFINITY)));
  ASSERT (ISNAN (FMA (L_(2.0), INFINITY, - INFINITY)));
  ASSERT (ISNAN (FMA (L_(2.0), - INFINITY, INFINITY)));
  ASSERT (ISNAN (FMA (- L_(2.0), INFINITY, INFINITY)));
  ASSERT (ISNAN (FMA (- L_(2.0), - INFINITY, - INFINITY)));

  ASSERT (FMA (INFINITY, L_(2.0), INFINITY) == INFINITY);
  ASSERT (FMA (INFINITY, - L_(2.0), - INFINITY) == - INFINITY);
  ASSERT (FMA (- INFINITY, L_(2.0), - INFINITY) == - INFINITY);
  ASSERT (FMA (- INFINITY, - L_(2.0), INFINITY) == INFINITY);
  ASSERT (FMA (L_(2.0), INFINITY, INFINITY) == INFINITY);
  ASSERT (FMA (L_(2.0), - INFINITY, - INFINITY) == - INFINITY);
  ASSERT (FMA (- L_(2.0), INFINITY, - INFINITY) == - INFINITY);
  ASSERT (FMA (- L_(2.0), - INFINITY, INFINITY) == INFINITY);

  /* Infinity times zero is NaN.  */
  ASSERT (ISNAN (FMA (INFINITY, L_(0.0), L_(7.0))));
  ASSERT (ISNAN (FMA (INFINITY, L_(0.0), INFINITY)));
  ASSERT (ISNAN (FMA (INFINITY, L_(0.0), NAN)));
  ASSERT (ISNAN (FMA (- INFINITY, L_(0.0), L_(7.0))));
  ASSERT (ISNAN (FMA (- INFINITY, L_(0.0), INFINITY)));
  ASSERT (ISNAN (FMA (- INFINITY, L_(0.0), NAN)));
  ASSERT (ISNAN (FMA (L_(0.0), INFINITY, L_(7.0))));
  ASSERT (ISNAN (FMA (L_(0.0), INFINITY, INFINITY)));
  ASSERT (ISNAN (FMA (L_(0.0), INFINITY, NAN)));
  ASSERT (ISNAN (FMA (L_(0.0), - INFINITY, L_(7.0))));
  ASSERT (ISNAN (FMA (L_(0.0), - INFINITY, INFINITY)));
  ASSERT (ISNAN (FMA (L_(0.0), - INFINITY, NAN)));

  /* NaN in the z argument.  */
  ASSERT (ISNAN (FMA (L_(2.0), L_(3.0), NAN)));
  ASSERT (ISNAN (FMA (L_(2.0), INFINITY, NAN)));
  ASSERT (ISNAN (FMA (INFINITY, L_(3.0), NAN)));
  ASSERT (ISNAN (FMA (INFINITY, INFINITY, NAN)));
}