NAME
	asn_rshift - right shift an arbitrary size number

SYNOPSIS
	string asn_rshift(string a, int shift)


DESCRIPTION
	Right shift a by the given amount.

ERRORS
	An error will result if shift is less than zero.

SEE ALSO
	kfun/asn_and, kfun/asn_lshift, kfun/asn_or, kfun/asn_xor