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unistd_h: make it easier to avoid sys_types_h This is useful for Emacs, which has its own method of porting to Windows, and which therefore does not need the sys_types_h module. * m4/off_t.m4: New file, defining gl_TYPE_OFF_T, which contains code moved here from gl_SYS_TYPES_H. * m4/sys_types_h.m4 (gl_SYS_TYPES_H): Require it instead of using the code directly. * m4/unistd_h.m4 (gl_UNISTD_H): Require gl_TYPE_OFF_T, not gl_SYS_TYPES_H. * modules/sys_types (Files): * modules/unistd (Files): Add m4/off_t.m4.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 04 May 2012 13:05:31 -0700
parents 0d187110279f
children e542fd46ad6f
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/* Test of ldexp*() function family.
   Copyright (C) 2012 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 <http://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)));
}