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 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 }