1 /* Test of fabs() function.
2    Copyright (C) 2010-2021 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 (fabs, double, (double));
25 
26 #include <string.h>
27 
28 #include "macros.h"
29 #include "minus-zero.h"
30 
31 #define DOUBLE double
32 #define L_(literal) literal
33 #define MINUS_ZERO minus_zerod
34 #define FABS fabs
35 #define RANDOM randomd
36 #include "test-fabs.h"
37 
38 int
main()39 main ()
40 {
41   /* A particular positive value.  */
42   x = 0.6;
43   y = fabs (x);
44   ASSERT (y == 0.6);
45 
46   /* A particular negative value.  */
47   x = -0.6;
48   y = fabs (x);
49   ASSERT (y == 0.6);
50 
51   test_function ();
52 
53   return 0;
54 }
55