circular shift

why don't most high level programming languages have a circular bitwise shift instructions given that most of the processors have it? why do I have to write a stupid one-liner that isn't guaranteed to be portable to have a compiler convert it to a single assembler instruction? it should be the other way around: write a single instruction and if processor doesn't support it, the compiler would convert it to an assembly workaround.

I know it's minor shit but that's also why there's no excuse for that

>>1
I actually have wondered this myself. Maybe C was developed before CPUs generally had these instructions?

BTW, check em.