math/bits.TrailingZeros64
standard libraryThe 4703rd most-called standard-library function by production calls. Called 130 times across 38 modules; 127 of those run outside tests and generated code.
2% in production calls vs 2026-W37 (124 → 127)
- prod calls
- 127
- non-test, non-generated
- all calls
- 130
- total callsites
- modules
- 38
- distinct callers
- in loop
- 69%
- of prod calls
- in tests
- 2%
- 3 calls
- resolved
- 100%
- to a known target
resolution mix
How each call resolves
How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →
- Package function100%A direct call to an exported package function, resolved by type.
who calls this
Notable callers
Production calls into TrailingZeros64 from notable Go projects. Open one on the map to see what else it hammers.
- CockroachDB 7 6%
- NATS 4 3%
- Go (golang.org/x) 3 2%
- Prometheus 3 2%
- InfluxDB 2 2%
where it's called
Callsites in the wild
12 representative callsites of 130, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
- in loop
- in loop
- in loop
- in loop
-
golang/go @v0.0.0-20260920011835-f043823a99a4
in loop -
google/gvisor @v0.0.0-20260919054224-26f3455a4cb9
in loop - in loop
-
intel/goresctrl @v0.13.0
in loop - in loop
- in loop
- in loop
top callers
The modules that reach for it
The modules that call TrailingZeros64 most in this snapshot.
- github.com/klauspost/compress3225%
- github.com/willf/bitset118%
- github.com/gaissmai/bart97%
- github.com/cockroachdb/pebble/v243%
- github.com/goccy/go-json43%
siblings
More from math/bits
The other most-called functions in this package. See all →