tests/test-expl.c

   1 /* Test of expl() function.
   2    Copyright (C) 2010-2020 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 <https://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 (expl, long double, (long double));
  25
  26 #include <float.h>
  27
  28 #include "fpucw.h"
  29 #include "macros.h"
  30
  31 #define DOUBLE long double
  32 #define L_(literal) literal##L
  33 #define MANT_DIG LDBL_MANT_DIG
  34 #define EXP expl
  35 #define RANDOM randoml
  36 #include "test-exp.h"
  37
  38 int
  39 main ()
  40 {
  41   DECL_LONG_DOUBLE_ROUNDING
  42
  43   BEGIN_LONG_DOUBLE_ROUNDING ();
  44
  45   /* A particular value.  */
  46   x = 0.6L;
  47   y = expl (x);
  48   ASSERT (y >= 1.822118800L && y <= 1.822118801L);
  49
  50   test_function ();
  51
  52   return 0;
  53 }