FA-89184 / Digital logic simulation / Member archive

Neighbour generation flips the wrong bits · case 04

Pairs that differ in more than one variable are tested and real one-bit neighbours are skipped.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Input [nv, terms]: product terms are strings over '0','1','-' with character 0 the most significant variable. Minterm m is covered by a term when every non-'-' position matches bit (m >> (nv-1-k)) & 1. A static-1 hazard is a pair of adjacent minterms (differing in one bit), both in the on-set, that no single term covers together. Return sorted [low, high] pairs.

Why this case matters

Glitch analysis in logic simulators flags transitions that may pulse when two product terms hand off.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
cover 1	`[[11, 12], [11, 13]]`	`[]`	Failed

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