Crate sim_lib_pitch_set 

Pitch-class set representations and operations for the SIM music libraries.

This crate models unordered collections of pitches as compact bitmasks. A PitchClassMask packs the twelve pitch classes into a u16, supporting rotation (transposition), inversion, prime-form normalization, and the IntervalVector census used by set theory. PitchRangeMask does the same across the full 128-key MIDI range. BitChord pairs a mask with an optional root, and ThirdStackSignature encodes chords as stacks of minor and major thirds.

Structs

BitChord

A chord represented as a PitchClassMask with an optional designated root.

IntervalVector

An interval-class vector: counts of each of the six interval classes (1..=6) occurring among a set’s pitch classes.

PitchClassMask

A bitmask over the twelve pitch classes, with bit n set when pitch class n is present.

PitchRangeMask

A bitmask over the 128 MIDI keys, with bit n set when MIDI key n is present.

ThirdStackSignature

A chord described as a root pitch class plus an ordered stack of third ThirdSteps.

Enums

PitchSetError

Error returned when a pitch-set value cannot be constructed, encoded, or decoded.

ThirdStep

A single step in a stack of thirds: a minor third (3 semitones) or major third (4 semitones).

Statics

RECIPES

Cookbook recipes for this lib, embedded at build time.