| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Test that tininess.h is correct for this architecture. |
| 2 | Copyright (C) 2012-2016 Free Software Foundation, Inc. |
| 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 |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <fenv.h> |
| 20 | #include <float.h> |
| 21 | #include <stdio.h> |
| 22 | #include <tininess.h> |
| 23 | |
| 24 | volatile float a = 0x1.fffp-126; |
| 25 | volatile float b = 0x1.0008p-1; |
| 26 | volatile float c; |
| 27 | volatile float m = FLT_MIN; |
| 28 | volatile float mm; |
| 29 | |
| 30 | static int |
| 31 | do_test (void) |
| 32 | { |
| 33 | int result = 0; |
| 34 | #ifdef FE_UNDERFLOW |
| 35 | feclearexcept (FE_ALL_EXCEPT); |
| 36 | mm = m * m; |
| 37 | if (!fetestexcept (FE_UNDERFLOW)) |
| 38 | { |
| 39 | puts ("underflow exception not supported at runtime, cannot test"); |
| 40 | return 0; |
| 41 | } |
| 42 | feclearexcept (FE_ALL_EXCEPT); |
| 43 | c = a * b; |
| 44 | if (fetestexcept (FE_UNDERFLOW)) |
| 45 | { |
| 46 | if (TININESS_AFTER_ROUNDING) |
| 47 | { |
| 48 | puts ("tininess.h says after rounding, " |
| 49 | "but detected before rounding"); |
| 50 | result = 1; |
| 51 | } |
| 52 | } |
| 53 | else |
| 54 | { |
| 55 | if (!TININESS_AFTER_ROUNDING) |
| 56 | { |
| 57 | puts ("tininess.h says before rounding, " |
| 58 | "but detected after rounding"); |
| 59 | result = 1; |
| 60 | } |
| 61 | } |
| 62 | #else |
| 63 | puts ("underflow exception not supported at compile time, cannot test"); |
| 64 | #endif |
| 65 | return result; |
| 66 | } |
| 67 | |
| 68 | #define TEST_FUNCTION do_test () |
| 69 | #include "../test-skeleton.c" |