githaven-fork/vendor/github.com/RoaringBitmap/roaring/clz.go

12 lines
227 B
Go
Raw Normal View History

// +build go1.9
// "go1.9", from Go version 1.9 onward
// See https://golang.org/pkg/go/build/#hdr-Build_Constraints
package roaring
import "math/bits"
func countLeadingZeros(x uint64) int {
return bits.LeadingZeros64(x)
}