Here's the source code for Apple's implementation (i386): http://www.opensource.apple.com/darwinsource/10.5.5/Libc-498.1.1/i386/string/strlen.s http://www.opens

Here's the source code for Apple's implementation (i386): http://www.opensource.apple.com/darwinsource/10.5.5/Libc-498.1.1/i386/string/strlen.s http://www.opensource.apple.com/darwinsource/10.5.5/Libc-498... (requires registration, here's gist link: http://gist.github.com/77178 http://gist.github.com/77178)