2008/7/15 tedd <tedd.sperling@xxxxxxxxx>: > > I said: > > "Round-off errors normally don't enter into things unless your doing > multiplication and division operations." > > And that is not "Bull" -- it's true. You can add and subtract all the > floating point numbers (the one's we are talking about here) you want > without any rounding errors whatsoever. $ php -r 'echo 0.7 - 0.2 == 0.5 ? "true\n" : "false\n";' false The operation you do isn't important. You just can't represent certain numbers exactly in binary, just as you can't represent 1/3 exactly in decimal. They have to be rounded internally. -robin -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
