xref: /aosp_15_r20/external/armnn/include/armnnUtils/FloatingPointConverter.hpp (revision 89c4ff92f2867872bb9e2354d150bf0c8c502810)

//
// Copyright © 2019 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//

#pragma once

#include <cstddef>

namespace armnnUtils
{

class FloatingPointConverter
{
public:
    /// Converts a buffer of FP32 values to FP16, and stores in the given dstFloat16Buffer.
    /// dstFloat16Buffer should be (numElements * 2) in size
    static void ConvertFloat32To16(const float *srcFloat32Buffer, size_t numElements, void *dstFloat16Buffer);

    static void ConvertFloat16To32(const void *srcFloat16Buffer, size_t numElements, float *dstFloat32Buffer);

    // Converts a buffer of FP32 values to BFloat16, and stores in the given dstBFloat16Buffer.
    static void ConvertFloat32ToBFloat16(const float* srcFloat32Buffer, size_t numElements, void* dstBFloat16Buffer);

    // Converts a buffer of BFloat16 to FP32 value, and stores in the given dstFloat32Buffer.
    static void ConvertBFloat16ToFloat32(const void* srcBFloat16Buffer, size_t numElements, float* dstFloat32Buffer);
};

} // namespace armnnUtils