const str len C

 ./ty
=== strlen_by_length ===

[empty] 0 bytes
const_time_swar     :    3.5 ns/op (checksum 18446744073702551616)
libc_strlen         :    6.4 ns/op (checksum 0)

[tiny (1-4)] 1 bytes
const_time_swar     :    2.1 ns/op (checksum 18446744073703551616)
libc_strlen         :    3.4 ns/op (checksum 1000000)

[small (5-16)] 8 bytes
const_time_swar     :    1.5 ns/op (checksum 8000000)
libc_strlen         :    3.1 ns/op (checksum 8000000)

[medium (17-64)] 34 bytes
const_time_swar     :    1.8 ns/op (checksum 34000000)
libc_strlen         :    4.4 ns/op (checksum 34000000)

[large (65-128)] 69 bytes
const_time_swar     :    1.3 ns/op (checksum 69000000)
libc_strlen         :    2.7 ns/op (checksum 69000000)

[xlarge (129-255)] 200 bytes
const_time_swar     :    1.2 ns/op (checksum 200000000)
libc_strlen         :    3.0 ns/op (checksum 200000000)