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// File: simddetect.h
// Description: Architecture detector.
// Author: Stefan Weil (based on code from Ray Smith)
//
// (C) Copyright 2014, Google Inc.
// 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.
///////////////////////////////////////////////////////////////////////
#include "platform.h"
// Architecture detector. Add code here to detect any other architectures for
// SIMD-based faster dot product functions. Intended to be a single static
// object, but it does no real harm to have more than one.
class SIMDDetect {
public:
// Returns true if AVX is available on this system.
static inline bool IsAVXAvailable() { return detector.avx_available_; }
// Returns true if AVX2 (integer support) is available on this system.
static inline bool IsAVX2Available() { return detector.avx2_available_; }
// Returns true if AVX512 Foundation (float) is available on this system.
static inline bool IsAVX512FAvailable() {
return detector.avx512F_available_;
}
// Returns true if AVX512 integer is available on this system.
static inline bool IsAVX512BWAvailable() {
return detector.avx512BW_available_;
}
// Returns true if SSE4.1 is available on this system.
static inline bool IsSSEAvailable() { return detector.sse_available_; }
private:
// Constructor, must set all static member variables.
SIMDDetect();
private:
// Singleton.
static SIMDDetect detector;
// If true, then AVX has been detected.
static TESS_API bool avx_available_;
static TESS_API bool avx2_available_;
static TESS_API bool avx512F_available_;
static TESS_API bool avx512BW_available_;
// If true, then SSe4.1 has been detected.
static TESS_API bool sse_available_;
};
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