projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9359218f | 1 | /* Compute minimum of two numbers, regarding NaN as missing argument. |
| 6d7e8eda | 2 | Copyright (C) 2002-2023 Free Software Foundation, Inc. |
| 9359218f | 3 | This file is part of the GNU C Library. |
| 9359218f AJ |
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 | |
| 59ba27a6 | 16 | License along with the GNU C Library; if not, see |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 9359218f AJ |
18 | |
| 19 | #include <sysdep.h> | |
| 34bb10aa | 20 | #include <libm-alias-float.h> |
| 9359218f AJ |
21 | |
| 22 | .text | |
| 23 | ENTRY(__fminf) | |
| 24 | ucomiss %xmm0, %xmm1 | |
| 25 | jp 1f // jump if unordered | |
| 26 | minss %xmm1, %xmm0 | |
| 27 | jmp 2f | |
| 28 | ||
| 29 | 1: ucomiss %xmm1, %xmm1 // Is xmm1 a NaN? | |
| 0a2546cd JM |
30 | jp 3f |
| 31 | // xmm0 is a NaN; xmm1 is not. Test if xmm0 is signaling. | |
| 32 | movss %xmm0, -4(%rsp) | |
| 33 | testb $0x40, -2(%rsp) | |
| 34 | jz 4f | |
| 9359218f | 35 | movss %xmm1, %xmm0 // otherwise return xmm1 |
| 0a2546cd JM |
36 | ret |
| 37 | ||
| 38 | 3: // xmm1 is a NaN; xmm0 may or may not be. | |
| 39 | ucomiss %xmm0, %xmm0 | |
| 40 | jp 4f | |
| 41 | // xmm1 is a NaN; xmm0 is not. Test if xmm1 is signaling. | |
| 42 | movss %xmm1, -4(%rsp) | |
| 43 | testb $0x40, -2(%rsp) | |
| 44 | jz 4f | |
| 45 | ret | |
| 46 | ||
| 47 | 4: // Both arguments are NaNs, or one is a signaling NaN. | |
| 48 | addss %xmm1, %xmm0 | |
| 9359218f AJ |
49 | |
| 50 | 2: ret | |
| 51 | END(__fminf) | |
| 34bb10aa | 52 | libm_alias_float (__fmin, fmin) |