Re: Math Problem

McKirahan said the following on 10/5/2005 7:44 AM:

How do I add floating point numbers accurately?

The following adds the 4 numbers
46.57, 45.00, 45.00, and 54.83 to give
191.39999999999998 instead of 191.40.

You convert them to whole numbers, do your math, and then use string
manipulation to put the decimal back where you want it along with
leading and/or trailing zeroes.

P.S. This FAQ doesn't help:
http://jibbering.com/faq/#FAQ4
4.7 Why does 5 * 1.015 != 5.075 or 0.05+0.01 != 0.06?

4.7 along with 4.6 do answer your question, they just aren't very well
worded and/or explained enough to make sense to anybody that doesn't
understand it to start with.

--
Randy
comp.lang.javascript FAQ - http://jibbering.com/faq & newsgroup weekly