Function pdl_compiler::backends::rust::mask_bits

pub fn mask_bits(n: usize, suffix: &str) -> LitInt

Generate a bit-mask which masks out n least significant bits.

Literal integers in Rust default to the i32 type. For this reason, if n is larger than 31, a suffix is added to the LitInt returned. This should either be u64 or usize depending on where the result is used.