You'd have to use a pretty esoteric platform to get that version. For most platforms you'll have a handle-rolled assembly version that's dramatically faster tha

You'd have to use a pretty esoteric platform to get that version. For most platforms you'll have a handle-rolled assembly version that's dramatically faster than that one (the x86_64 one is here[1]). [1]: https://github.com/bminor/glibc/blob/master/sysdeps/x86_64/strlen.S https://github.com/bminor/glibc/blob/master/sysdeps/x86_64/s...