platform_helpers.h

Platform-detection helper utilities.

Provides lightweight, header-only helpers for querying properties of the host platform at run time, such as the processor byte order.

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.

Maps the upstream compatibility macro to onnx-light’s explicit proto ABI annotation. This keeps declarations from vendored ONNX headers visible when lib_onnx_proto uses hidden visibility by default.

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.

Functions

inline bool is_processor_little_endian()

Returns true when the host processor uses little-endian byte order.

The check is performed at run time by writing a known 32-bit value into memory and inspecting its first byte. On a little-endian machine the least significant byte comes first, so the first byte equals 1.

Returns:

true if the processor is little-endian; false otherwise.