Files
mattermost/vendor/github.com/RoaringBitmap/roaring/clz_compat.go
Miguel de la Cruz 0154b8059b [MM-20979] Add first implementation of the Bleve search engine (#14562)
* [MM-20979] Add first implementation of the Bleve search engine

* Fix i18n

* Migrate searchengine utils tests

* Fix linter

* Don't add allTermsQ if both termQueries and notTermQueries are empty

* Fix test that should work if user is system admin

* Modify naming according to review comments

* Abstract getIndexDir function

* Extracting bleve engine name as a constant

* Merge both Indexer interfaces into one

* Add worker stopped message

* Allow worker to be started/stopped with config change

* Use constants for index names

* Modify test order

* Fix linter

* Trying to unlock the CI
2020-05-20 01:29:55 +02:00

37 lines
461 B
Go

// +build !go1.9
package roaring
// LeadingZeroBits returns the number of consecutive most significant zero
// bits of x.
func countLeadingZeros(i uint64) int {
if i == 0 {
return 64
}
n := 1
x := uint32(i >> 32)
if x == 0 {
n += 32
x = uint32(i)
}
if (x >> 16) == 0 {
n += 16
x <<= 16
}
if (x >> 24) == 0 {
n += 8
x <<= 8
}
if x>>28 == 0 {
n += 4
x <<= 4
}
if x>>30 == 0 {
n += 2
x <<= 2
}
n -= int(x >> 31)
return n
}