<?php return [ [ '1357', '751', ], [ '246', '166', ], [ '12345', '5349', ], [ '123.45', '#NUM!', ], [ '0', '0', ], [ true, '#VALUE!', ], [ '3579', '#NUM!', ], [ '54', '44', ], // 2's Complement [ '7777777533', '-165', ], ];