FloatingPointConverter Class Reference

#include <FloatingPointConverter.hpp>

Static Public Member Functions
static void	ConvertFloat32To16 (const float *srcFloat32Buffer, size_t numElements, void *dstFloat16Buffer)
	Converts a buffer of FP32 values to FP16, and stores in the given dstFloat16Buffer.
static void	ConvertFloat16To32 (const void *srcFloat16Buffer, size_t numElements, float *dstFloat32Buffer)
static void	ConvertFloat32ToBFloat16 (const float *srcFloat32Buffer, size_t numElements, void *dstBFloat16Buffer)
static void	ConvertBFloat16ToFloat32 (const void *srcBFloat16Buffer, size_t numElements, float *dstFloat32Buffer)

Detailed Description

Definition at line 13 of file FloatingPointConverter.hpp.

Member Function Documentation

ConvertBFloat16ToFloat32()

void ConvertBFloat16ToFloat32 ( const void * srcBFloat16Buffer, size_t numElements, float * dstFloat32Buffer )

static

ConvertFloat16To32()

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

static

Definition at line 43 of file FloatingPointConverter.cpp.

{
    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];
    }
}

Referenced by armnn::AttemptBackendAssignment(), Float16Decoder::DecodeTensor(), NeonConvertFp16ToFp32Workload::Execute(), Float16ToFloat32::Func(), Float16Decoder::Get(), Float16Encoder::Get(), and ConvertConstDequantisationLayersToConstLayersImpl::~ConvertConstDequantisationLayersToConstLayersImpl().

ConvertFloat32To16()

void ConvertFloat32To16 ( const float * srcFloat32Buffer, size_t numElements, void * dstFloat16Buffer )

static

Converts a buffer of FP32 values to FP16, and stores in the given dstFloat16Buffer.

dstFloat16Buffer should be (numElements * 2) in size

Definition at line 17 of file FloatingPointConverter.cpp.

{
    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]);
        }
    }
}

Referenced by NeonConvertFp32ToFp16Workload::Execute(), Float32ToFloat16::Func(), and Float16Encoder::Set().

ConvertFloat32ToBFloat16()

void ConvertFloat32ToBFloat16 ( const float * srcFloat32Buffer, size_t numElements, void * dstBFloat16Buffer )

static

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The documentation for this class was generated from the following files:

• include/armnnUtils/FloatingPointConverter.hpp
• src/armnnUtils/FloatingPointConverter.cpp