projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 646c2833 JM |
1 | /* Test for correct rounding of negative floating-point numbers by scanf |
| 2 | (bug 23280). | |
| 2b778ceb | 3 | Copyright (C) 2018-2021 Free Software Foundation, Inc. |
| 646c2833 JM |
4 | This file is part of the GNU C Library. |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 7 | modify it under the terms of the GNU Lesser General Public | |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | Lesser General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public | |
| 17 | License along with the GNU C Library; if not, see | |
| 5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
| 646c2833 JM |
19 | |
| 20 | #include <fenv.h> | |
| 21 | #include <stdio.h> | |
| 22 | #include <stdlib.h> | |
| 23 | #include <support/check.h> | |
| 24 | ||
| 25 | static int | |
| 26 | do_test (void) | |
| 27 | { | |
| 28 | #ifdef FE_DOWNWARD | |
| 29 | if (fesetround (FE_DOWNWARD) == 0) | |
| 30 | { | |
| 31 | double a = strtod ("-0.1", NULL); | |
| 32 | double b = 0; | |
| 33 | int r = sscanf ("-0.1", "%lf", &b); | |
| 34 | TEST_VERIFY (r == 1); | |
| 35 | TEST_VERIFY (a == b); | |
| 36 | } | |
| 37 | #endif | |
| 38 | #ifdef FE_UPWARD | |
| 39 | if (fesetround (FE_UPWARD) == 0) | |
| 40 | { | |
| 41 | double a = strtod ("-0.1", NULL); | |
| 42 | double b = 0; | |
| 43 | int r = sscanf ("-0.1", "%lf", &b); | |
| 44 | TEST_VERIFY (r == 1); | |
| 45 | TEST_VERIFY (a == b); | |
| 46 | } | |
| 47 | #endif | |
| 48 | return 0; | |
| 49 | } | |
| 50 | ||
| 51 | #include <support/test-driver.c> |