1 /* Test of sqrt() 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 (sqrt, 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 SQRT sqrt 34 #define RANDOM randomd 35 #include "test-sqrt.h" 36 37 int main()38main () 39 { 40 /* A particular value. */ 41 x = 0.6; 42 y = sqrt (x); 43 ASSERT (y >= 0.7745966692 && y <= 0.7745966693); 44 45 test_function (); 46 47 return 0; 48 } 49