projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d0800ae0 | 1 | /* Test iseqsig with excess precision. |
| 2b778ceb | 2 | Copyright (C) 2016-2021 Free Software Foundation, Inc. |
| d0800ae0 JM |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| d0800ae0 JM |
18 | |
| 19 | #include <float.h> | |
| 20 | #include <math.h> | |
| 21 | #include <stdio.h> | |
| 22 | ||
| 23 | static int | |
| 24 | do_test (void) | |
| 25 | { | |
| 26 | int result = 0; | |
| 27 | ||
| 28 | if (FLT_EVAL_METHOD == 1 || FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 32) | |
| 29 | { | |
| 30 | /* Excess precision for float. */ | |
| 31 | if (iseqsig (1.0f, 1.0f + (float) DBL_EPSILON)) | |
| 32 | { | |
| 33 | puts ("iseqsig removes excess precision float -> double"); | |
| 34 | result = 1; | |
| 35 | } | |
| 36 | else | |
| 37 | puts ("iseqsig preserves excess precision float -> double"); | |
| 38 | if (iseqsig (__builtin_inff (), FLT_MAX * FLT_MAX)) | |
| 39 | { | |
| 40 | puts ("iseqsig removes excess range float -> double"); | |
| 41 | result = 1; | |
| 42 | } | |
| 43 | else | |
| 44 | puts ("iseqsig preserves excess range float -> double"); | |
| 45 | } | |
| 46 | ||
| 47 | if (FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 64) | |
| 48 | { | |
| 49 | /* Excess precision for float and double. */ | |
| 50 | if (iseqsig (1.0f, 1.0f + (float) LDBL_EPSILON)) | |
| 51 | { | |
| 52 | puts ("iseqsig removes excess precision float -> long double"); | |
| 53 | result = 1; | |
| 54 | } | |
| 55 | else | |
| 56 | puts ("iseqsig preserves excess precision float -> long double"); | |
| 57 | if (iseqsig (1.0, 1.0 + (double) LDBL_EPSILON)) | |
| 58 | { | |
| 59 | puts ("iseqsig removes excess precision double -> long double"); | |
| 60 | result = 1; | |
| 61 | } | |
| 62 | else | |
| 63 | puts ("iseqsig preserves excess precision double -> long double"); | |
| 64 | if (LDBL_MAX_EXP >= 2 * DBL_MAX_EXP) | |
| 65 | { | |
| 66 | if (iseqsig (__builtin_inf (), DBL_MAX * DBL_MAX)) | |
| 67 | { | |
| 68 | puts ("iseqsig removes excess range double -> long double"); | |
| 69 | result = 1; | |
| 70 | } | |
| 71 | else | |
| 72 | puts ("iseqsig preserves excess range double -> long double"); | |
| 73 | } | |
| 74 | } | |
| 75 | ||
| 76 | return result; | |
| 77 | } | |
| 78 | ||
| 79 | #define TEST_FUNCTION do_test () | |
| 80 | #include "../test-skeleton.c" |