1 /* Test of modff() 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>, 2010-2011. */ 18 19 #include <config.h> 20 21 #include <math.h> 22 23 #include "signature.h" 24 SIGNATURE_CHECK (modff, float, (float, float *)); 25 26 #include <float.h> 27 28 #include "macros.h" 29 30 #define DOUBLE float 31 #define L_(literal) literal##f 32 #define MANT_DIG FLT_MANT_DIG 33 #define MODF modff 34 #define RANDOM randomf 35 #include "test-modf.h" 36 37 int 38 main () /* */ 39 { 40 /* A particular positive value. */ 41 x = 5.972407f; 42 y = modff (x, &z); 43 ASSERT (y >= 0.972406f && y <= 0.972408f); 44 ASSERT (z == 5.0f); 45 46 /* A particular negative value. */ 47 x = -5.972407f; 48 y = modff (x, &z); 49 ASSERT (y >= -0.972408f && y <= -0.972406f); 50 ASSERT (z == -5.0f); 51 52 test_function (); 53 54 return 0; 55 }