++ insightful

Searching CPAN for "Bresenham's line algorithm" returns Algorithm::Line::Bresenham, and an XS version. It looks like it would be feasible to re-purpose the algorithm to split a range a the OP wants.

In reply to Re^2: Split range 0 to M into N non-overlapping (roughly equal) ranges. by chrestomanci
in thread Split range 0 to M into N non-overlapping (roughly equal) ranges. by BrowserUk

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