view tests/test-fabsf.c @ 40214:452ab00796c7

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 fabsf() function.
   Copyright (C) 2010-2019 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/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2010-2011.  */

#include <config.h>

#include <math.h>

#include "signature.h"
SIGNATURE_CHECK (fabsf, float, (float));

#include <string.h>

#include "macros.h"
#include "minus-zero.h"

#define DOUBLE float
#define L_(literal) literal##f
#define MINUS_ZERO minus_zerof
#define FABS fabsf
#define RANDOM randomf
#include "test-fabs.h"

int
main ()
{
  /* A particular positive value.  */
  x = 0.6f;
  y = fabsf (x);
  ASSERT (y == 0.6f);

  /* A particular negative value.  */
  x = -0.6f;
  y = fabsf (x);
  ASSERT (y == 0.6f);

  test_function ();

  return 0;
}