// Benchmark and configure leafSize using: go test -bench="Leaf"
//
//	8 and 16 effective on 3.0 GHz Xeon "Clovertown" CPU (128 byte cache lines)
//	8 and 16 effective on 2.66 GHz Core 2 Duo "Penryn" CPU
var leafSize int = 8 // number of Word-size binary values treat as a monolithic block

type divisor struct {
	bbb     nat // divisor