Math calculations

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#16496

From: Kerry Helmer
Date: Tue, 16 Feb 1999 00:00

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I am new to Java and I'm having a rough time understanding the math
calculations.  Here is an  examples of one of the problems that I'm having.

double tender = 99.99
centsRemain = (int)(100.00d * (tender % 1.00d));

The centsRemain variable ends up being 98 instead of 99.
When I tried to check out the problem by doing the following code:
System.out.println ((tender % 1.00d));
This returns 0.9899999999999949 instead of .99  Can someone help explain to
me what I'm doing wrong?

Does anybody have some rules to follow that would help me when performing
math operations?

Thanks
Kerry
khelmer@parlorcity.com

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From: "Kerry Helmer" <khelmer@parlorcity.com>
Subject: Math calculations
Date: 1999/02/16
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