Module raw 

Re-export the core rANS primitives. Raw rANS encoder/decoder implementations for both RansByte and Rans64 variants.

The code is generated via a macro to avoid duplication while matching the C++ template structure exactly.

Scale-bits edge cases

When scale_bits == 32 (the maximum for Rans64), the expression 1u32 << scale_bits overflows in Rust (and is undefined behavior in C++). The upstream C++ code also enters indefinite shift territory here. This implementation defines the behavior deterministically: scale_bits == 32 is rejected for the prepared-symbol path where it would cause overflow, matching an intentional safety divergence. See residual MSRTC.RAW.SCALE32.

Structs

Rans64DecSymbol

Prepared decoder symbol.

Rans64Decoder

Raw rANS decoder.

Rans64EncSymbol

Prepared encoder symbol.

Rans64Encoder

Raw rANS encoder.

RansByteDecSymbol

Prepared decoder symbol.

RansByteDecoder

Raw rANS decoder.

RansByteEncSymbol

Prepared encoder symbol.

RansByteEncoder

Raw rANS encoder.