12 lines
227 B
Go
12 lines
227 B
Go
|
// +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)
|
||
|
}
|