tests/test-exp2.c

   1 /* Test of exp2() 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 (exp2, double, (double));
  25
  26 #include <float.h>
  27
  28 #include "macros.h"
  29
  30 #define DOUBLE double
  31 #define L_(literal) literal
  32 #define MANT_DIG DBL_MANT_DIG
  33 #define MAX_EXP DBL_MAX_EXP
  34 #define MIN_EXP DBL_MIN_EXP
  35 #define EXP2 exp2
  36 #define RANDOM randomd
  37 #include "test-exp2.h"
  38
  39 int
  40 main ()
  41 {
  42   /* A particular value.  */
  43   x = 0.6;
  44   y = exp2 (x);
  45   ASSERT (y >= 1.515716566 && y <= 1.515716567);
  46
  47   test_function ();
  48
  49   return 0;
  50 }