A 100LOC C impl of memset, that is faster than glibc's

Re:A 100LOC C impl of memset, that is faster than glibc's by asdfasgasdgasdg on Friday November 12, 2021 @07:27AM (#29198646)

Does glibc not have feature detection and conditional compilation for cases like this? That is surprising to me.

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Re:A 100LOC C impl of memset, that is faster than glibc's by rwmj on Friday November 12, 2021 @07:35AM (#29198689)

It does. Each subdirectory of sysdeps/ can contain specific implementations per platform, arch, etc. eg: the aarch64 assembler memset is:

There's also the "ifunc" mechanism which can be used to make the choice at runtime, eg:

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