| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | ||
| 3 | * | ||
| 4 | * Copyright 2023 Mike Becker, Olaf Wintermann All rights reserved. | ||
| 5 | * | ||
| 6 | * Redistribution and use in source and binary forms, with or without | ||
| 7 | * modification, are permitted provided that the following conditions are met: | ||
| 8 | * | ||
| 9 | * 1. Redistributions of source code must retain the above copyright | ||
| 10 | * notice, this list of conditions and the following disclaimer. | ||
| 11 | * | ||
| 12 | * 2. Redistributions in binary form must reproduce the above copyright | ||
| 13 | * notice, this list of conditions and the following disclaimer in the | ||
| 14 | * documentation and/or other materials provided with the distribution. | ||
| 15 | * | ||
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | ||
| 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| 26 | * POSSIBILITY OF SUCH DAMAGE. | ||
| 27 | */ | ||
| 28 | |||
| 29 | #include "cx/common.h" | ||
| 30 | |||
| 31 | #ifndef CX_SZMUL_BUILTIN | ||
| 32 | 1054 | int cx_szmul_impl( | |
| 33 | size_t a, | ||
| 34 | size_t b, | ||
| 35 | size_t *result | ||
| 36 | ) { | ||
| 37 |
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1054 | if (a == 0 || b == 0) { |
| 38 | 5 | *result = 0; | |
| 39 | 5 | return 0; | |
| 40 | } | ||
| 41 | 1049 | size_t r = a * b; | |
| 42 |
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1049 | if (r / b == a) { |
| 43 | 1038 | *result = r; | |
| 44 | 1038 | return 0; | |
| 45 | } else { | ||
| 46 | 11 | *result = 0; | |
| 47 | 11 | return 1; | |
| 48 | } | ||
| 49 | } | ||
| 50 | #endif // CX_SZMUL_BUILTIN | ||
| 51 |