1 /* Test of exp2() 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 (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 }