apint 0.2.0

Arbitrary precision integers library.
Documentation 
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use errors::{Error, Result};
use traits::{Width};
use bitpos::{BitPos};
use apint::{ShiftAmount};

#[inline]
pub(crate) fn verify_bit_access<T, P>(a: &T, pos: P) -> Result<()>
	where T: Width,
	      P: Into<BitPos>
{
	let pos = pos.into();
	let width = a.width();
	if !width.is_valid_pos(pos) {
		return Err(Error::invalid_bit_access(pos, width))
	}
	Ok(())
}

#[inline]
pub(crate) fn verify_shift_amount<W, S>(a: &W, shift_amount: S) -> Result<()>
	where W: Width,
	      S: Into<ShiftAmount>
{
	let shift_amount = shift_amount.into();
	let width = a.width();
	if !width.is_valid_shift_amount(shift_amount) {
		return Err(Error::invalid_shift_amount(shift_amount, width))
	}
	Ok(())
}