Function extern_spec_BitAndAssign__ref_usize_usize_bitand_assign 

pub fn extern_spec_BitAndAssign__ref_usize_usize_bitand_assign(
    self_: &mut usize,
    rhs: &usize,
)

extern spec for usize::bitand_assign

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

ghost

ensures

^self == *self $op *rhs