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MetroHash
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amd-master
src/platform.h
62 строки
2 KB
Sebastian Neubauer
Fix unaligned loads in metrohash
11 май 2020, 14:24
11 май 2020, 14:24
712f76f
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// platform.h // // Copyright 2015-2018 J. Andrew Rogers // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // // Modifications Copyright© 2019 Advanced Micro Devices, Inc. All rights reserved. #ifndef METROHASH_PLATFORM_H #define METROHASH_PLATFORM_H #include <stdint.h> #include <string.h> namespace Util { // rotate right idiom recognized by most compilers inline static uint64_t rotate_right(uint64_t v, unsigned k) { return (v >> k) | (v << (64 - k)); } inline static uint64_t read_u64(const void * const ptr) { uint64_t val; memcpy(&val, ptr, sizeof(val)); return val; } inline static uint64_t read_u32(const void * const ptr) { uint32_t val; memcpy(&val, ptr, sizeof(val)); return static_cast<uint64_t>(val); } inline static uint64_t read_u16(const void * const ptr) { uint16_t val; memcpy(&val, ptr, sizeof(val)); return static_cast<uint64_t>(val); } inline static uint64_t read_u8 (const void * const ptr) { return static_cast<uint64_t>(*reinterpret_cast<const uint8_t *>(ptr)); } } // Util #endif // #ifndef METROHASH_PLATFORM_H