Subj : Weird Math
To   : netscape.public.mozilla.jseng
From : Andy Madigan
Date : Wed Sep 15 2004 03:20 pm

I've been running some scripts through rhino, and one script kept on
getting an equation wrong, I finally found the problem, I ran a simple
test through the Rhino Shell, here's the output:

js> 100 - 69.1
30.900000000000006

Am I going nuts? Is this something about how javascript does math that
I don't know? (Note: 100 - 59.1 is correct)

P.S. Also:
js> 100 - 69.1 == 100 - 59.1 - 10
false

P.P.S In case this is something VM/System related, I am using Sun's
J2SDK 1.4.2_05 on Debian Sid (kernel 2.4.25)

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