msrtc-rans-core 0.1.0

Deterministic no_std rANS primitives for msrtc_rans entropy coder

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Source code size: 38.71 kB This is the summed size of all the files inside the crates.io package for this release.
Documentation size: 1.17 MB This is the summed size of all files generated by rustdoc for all configured targets
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this release: 6s Average build duration of successful builds.
all releases: 4s Average build duration of successful builds in releases after 2024-10-23.
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msrtc-rans-core

Deterministic, no_std-capable rANS primitives for the msrtc_rans entropy coder.

This crate implements the raw rANS encoding and decoding primitives used by Microsoft MLVC's msrtc_rans package. The arithmetic (reciprocal preparation, Mul64Hi, fast division) is structurally faithful to the C++ implementation.

Status: The encoder and decoder equations, constants, and symbol preparation are implemented and self-consistent. Byte-level parity against the pinned Microsoft C++ oracle has not yet been established by differential court. See the msrtc-rans-court crate for ongoing parity verification.