| Ben Clayton | 1b48e6b | 2023-11-22 16:54:51 +0000 | [diff] [blame] | 1 | // Copyright 2023 The Dawn & Tint Authors |
| 2 | // |
| 3 | // Redistribution and use in source and binary forms, with or without |
| 4 | // modification, are permitted provided that the following conditions are met: |
| 5 | // |
| 6 | // 1. Redistributions of source code must retain the above copyright notice, this |
| 7 | // list of conditions and the following disclaimer. |
| 8 | // |
| 9 | // 2. Redistributions in binary form must reproduce the above copyright notice, |
| 10 | // this list of conditions and the following disclaimer in the documentation |
| 11 | // and/or other materials provided with the distribution. |
| 12 | // |
| 13 | // 3. Neither the name of the copyright holder nor the names of its |
| 14 | // contributors may be used to endorse or promote products derived from |
| 15 | // this software without specific prior written permission. |
| 16 | // |
| 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 18 | // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 20 | // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| 21 | // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 23 | // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| 24 | // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 25 | // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef SRC_TINT_UTILS_BYTES_ENDIANNESS_H_ |
| 29 | #define SRC_TINT_UTILS_BYTES_ENDIANNESS_H_ |
| 30 | |
| 31 | #include <cstdint> |
| 32 | #include <cstring> |
| 33 | |
| 34 | namespace tint::bytes { |
| 35 | |
| 36 | enum class Endianness : uint8_t { kBig, kLittle }; |
| 37 | |
| 38 | inline Endianness NativeEndianness() { |
| 39 | uint8_t u8[4]; |
| 40 | uint32_t u32 = 0x01020304; |
| 41 | memcpy(u8, &u32, 4); |
| 42 | return u8[0] == 1 ? Endianness::kBig : Endianness::kLittle; |
| 43 | } |
| 44 | |
| 45 | } // namespace tint::bytes |
| 46 | |
| 47 | #endif // SRC_TINT_UTILS_BYTES_ENDIANNESS_H_ |
