| /* Test of modfl() function. |
| Copyright (C) 2010-2020 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Written by Bruno Haible <bruno@clisp.org>, 2010. */ |
| |
| #include <config.h> |
| |
| #include <math.h> |
| |
| #include "signature.h" |
| SIGNATURE_CHECK (modfl, long double, (long double, long double *)); |
| |
| #include <float.h> |
| |
| #include "fpucw.h" |
| #include "macros.h" |
| |
| #define DOUBLE long double |
| #define L_(literal) literal##L |
| #define MANT_DIG LDBL_MANT_DIG |
| #define MODF modfl |
| #define RANDOM randoml |
| #include "test-modf.h" |
| |
| int |
| main () |
| { |
| DECL_LONG_DOUBLE_ROUNDING |
| |
| BEGIN_LONG_DOUBLE_ROUNDING (); |
| |
| /* A particular positive value. */ |
| x = 5.972406760L; |
| y = modfl (x, &z); |
| ASSERT (y >= 0.972406759L && y <= 0.972406761L); |
| ASSERT (z == 5.0); |
| |
| /* A particular negative value. */ |
| x = -5.972406760L; |
| y = modfl (x, &z); |
| ASSERT (y >= -0.972406761L && y <= -0.972406759L); |
| ASSERT (z == -5.0L); |
| |
| test_function (); |
| |
| return 0; |
| } |