skeleton.h - mozsearch

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// Copyright 2020 Google LLC

// SPDX-License-Identifier: Apache-2.0

//

// 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.

// Demo interface to target-specific code in skeleton.cc

// Normal header with include guard and namespace.

#ifndef HIGHWAY_HWY_EXAMPLES_SKELETON_H_

#define HIGHWAY_HWY_EXAMPLES_SKELETON_H_

// Platform-specific definitions used for declaring an interface, independent of

// the SIMD instruction set.

#include "hwy/base.h"  // HWY_RESTRICT

namespace skeleton {

// Computes base-2 logarithm by converting to float. Supports dynamic dispatch.

HWY_DLLEXPORT void CallFloorLog2(const uint8_t* HWY_RESTRICT in, size_t count,

                                 uint8_t* HWY_RESTRICT out);

// Same, but uses HWY_DYNAMIC_POINTER to save a function pointer and call it.

HWY_DLLEXPORT void SavedCallFloorLog2(const uint8_t* HWY_RESTRICT in,

                                      size_t count, uint8_t* HWY_RESTRICT out);

}  // namespace skeleton

#endif  // HIGHWAY_HWY_EXAMPLES_SKELETON_H_