tests/test-acosl.c

   1 /* Test of acosl() function.
   2    Copyright (C) 2010-2017 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
  18
  19 #include <config.h>
  20
  21 #include <math.h>
  22
  23 #include "signature.h"
  24 SIGNATURE_CHECK (acosl, long double, (long double));
  25
  26 #include "fpucw.h"
  27 #include "macros.h"
  28
  29 volatile long double x;
  30 long double y;
  31
  32 int
  33 main ()
  34 {
  35   DECL_LONG_DOUBLE_ROUNDING
  36
  37   BEGIN_LONG_DOUBLE_ROUNDING ();
  38
  39   /* A particular value.  */
  40   x = 0.6L;
  41   y = acosl (x);
  42   ASSERT (y >= 0.9272952180L && y <= 0.9272952181L);
  43
  44   return 0;
  45 }