Function extern_spec_Shl_isize_usize_shl 

pub fn extern_spec_Shl_isize_usize_shl(self_: usize, rhs: isize) -> usize

extern spec for usize::shl

This is not a real function: its only use is for documentation.

requires

(0usize as $rhs) <= rhs && rhs < $type::BITS as $rhs

ensures

result == self $op rhs