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//
// Copyright © 2017 Arm Ltd. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include <armnnUtils/FloatingPointConverter.hpp>
#include "BFloat16.hpp"
#include "Half.hpp"
#include <armnn/Exceptions.hpp>
#include <armnn/utility/Assert.hpp>
namespace armnnUtils
{
void FloatingPointConverter::ConvertFloat32To16(const float* srcFloat32Buffer,
size_t numElements,
void* dstFloat16Buffer)
{
if (srcFloat32Buffer == nullptr)
{
throw armnn::InvalidArgumentException("ConvertFloat32To16: source float32 buffer pointer is null");
}
if (dstFloat16Buffer == nullptr)
{
throw armnn::InvalidArgumentException("ConvertFloat32To16: destination float16 buffer pointer is null");
}
armnn::Half* pHalf = static_cast<armnn::Half*>(dstFloat16Buffer);
for (size_t i = 0; i < numElements; i++)
{
pHalf[i] = armnn::Half(srcFloat32Buffer[i]);
if (isinf(pHalf[i]))
{
// If the value of converted Fp16 is infinity, round to the closest finite Fp16 value.
pHalf[i] = copysign(std::numeric_limits<armnn::Half>::max(), pHalf[i]);
}
}
}
void FloatingPointConverter::ConvertFloat16To32(const void* srcFloat16Buffer,
size_t numElements,
float* dstFloat32Buffer)
{
if (srcFloat16Buffer == nullptr)
{
throw armnn::InvalidArgumentException("ConvertFloat16To32: source float16 buffer pointer is null");
}
if (dstFloat32Buffer == nullptr)
{
throw armnn::InvalidArgumentException("ConvertFloat16To32: destination float32 buffer pointer is null");
}
const armnn::Half* pHalf = static_cast<const armnn::Half*>(srcFloat16Buffer);
for (size_t i = 0; i < numElements; i++)
{
dstFloat32Buffer[i] = pHalf[i];
}
}
} //namespace armnnUtils
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