cast_helper.h

namespace onnx_light

Alias that makes onnx-light headers compatible with code that references ONNX_LIGHT_NAMESPACE (the macro used in the standard onnx package).

Set to ONNX_LIGHT_NAMESPACE so both names resolve to the same namespace.

Symbol-visibility attribute for the public onnx-light C++ API.

Defined as empty because onnx-light does not require explicit __declspec(dllexport) or __attribute__((visibility("default"))) annotations — visibility is controlled at the shared-library level. The macro is provided so that vendored ONNX headers that decorate their declarations with ONNX_API compile without modification.

Namespace alias so that ONNX C++ code (and consumers such as onnxruntime) that refers to the literal onnx namespace — rather than the ONNX_NAMESPACE macro — resolves to the onnx-light namespace. The standard onnx package lives in namespace onnx; onnx-light uses onnx_light (via ONNX_LIGHT_NAMESPACE), so this alias keeps onnx-light a true drop-in. It is only introduced when the onnx-light namespace differs from onnx.

namespace onnx_kernels

namespace kernel

Functions

std::uint16_t FloatToFloat16Bits(float f) noexcept

float Float16BitsToFloat(std::uint16_t h) noexcept

std::uint16_t FloatToBfloat16Bits(float f) noexcept

float Bfloat16BitsToFloat(std::uint16_t b) noexcept

std::uint8_t FloatToFloat4E2M1Nibble(float v)

float Float4E2M1NibbleToFloat(std::uint8_t nibble) noexcept

std::uint8_t FloatRoundToFloat4E2M1Nibble(float v) noexcept

std::vector<std::uint8_t> Pack4Bit(const std::vector<std::int8_t> &values)

std::vector<std::uint8_t> Pack2Bit(const std::vector<std::int8_t> &values)

Tensor MakeFloat16Tensor(const std::string &name, const std::vector<int64_t> &shape, const std::vector<float> &values)

Tensor MakeFloat16Scalar(const std::string &name, float value)

Tensor MakeBfloat16Tensor(const std::string &name, const std::vector<int64_t> &shape, const std::vector<float> &values)

Tensor MakeBfloat16Scalar(const std::string &name, float value)

Tensor FloatToFloat16Tensor(const std::string &name, const Tensor &f)

Tensor RoundToFloat16(const Tensor &f)

Tensor Uint16ZeroPoint(std::uint16_t value)

Tensor Int16ZeroPoint(std::int16_t value)

Tensor MakeFloat8Tensor(DataType dtype, const std::vector<int64_t> &shape, const std::vector<float> &values, std::uint8_t (*encode)(float) noexcept)

Tensor MakeSubByteTensor(DataType dtype, const std::vector<int64_t> &shape, const std::vector<std::int8_t> &values, int bits)

Tensor MakeFloat4E2M1Tensor(const std::vector<int64_t> &shape, const std::vector<float> &values)