skeleton.h (1512B)
1 // Copyright 2020 Google LLC 2 // SPDX-License-Identifier: Apache-2.0 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 16 // Demo interface to target-specific code in skeleton.cc 17 18 // Normal header with include guard and namespace. 19 #ifndef HIGHWAY_HWY_EXAMPLES_SKELETON_H_ 20 #define HIGHWAY_HWY_EXAMPLES_SKELETON_H_ 21 22 // Platform-specific definitions used for declaring an interface, independent of 23 // the SIMD instruction set. 24 #include "hwy/base.h" // HWY_RESTRICT 25 26 namespace skeleton { 27 28 // Computes base-2 logarithm by converting to float. Supports dynamic dispatch. 29 HWY_DLLEXPORT void CallFloorLog2(const uint8_t* HWY_RESTRICT in, size_t count, 30 uint8_t* HWY_RESTRICT out); 31 32 // Same, but uses HWY_DYNAMIC_POINTER to save a function pointer and call it. 33 HWY_DLLEXPORT void SavedCallFloorLog2(const uint8_t* HWY_RESTRICT in, 34 size_t count, uint8_t* HWY_RESTRICT out); 35 36 } // namespace skeleton 37 38 #endif // HIGHWAY_HWY_EXAMPLES_SKELETON_H_