That relies on architecture things that arn't in C. and that's why I say "ignoring the library functions or stuff you can include from safe coding standard head

That relies on architecture things that arn't in C. and that's why I say "ignoring the library functions or stuff you can include from safe coding standard headers. ". Of course you can do an intrinsic or whatever, and that's better obviously. But I wanted to show how easy it is to write a platform independent function to do this from raw C.