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Lang Learn Cards

21 February 2009

Lang Learn Cards
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Lang Learn Cards
n00b question about Fedora-9 for the PPC, and OpenJDK?

Hi, I installed Fedora 9 on my G3 iMac last year, and, since they didn't include the drivers for the iMac's specific video card, I have nothing but a terminal.

That's ok, though. No time like the present to learn ViM !

Anyway, I'm learning Java, when I run across what looks like a bug in the java.lang.Math class. No matter WHAT i do, the lines

double k = Math.sqrt( 49.0 );
System.out.println( k );

will not output the correct value (7.0). It gives me an apparently random string of numbers with an exponent of -300-something.

Now, when i run my class in another operating system on the same computer, it gives me the correct output. What gives? was a bug compiled into the OpenJDK for Fedora-9-PPC?

(The alleged Java version is 1.6.something.)

It sounds like it could be a difference in the floating point implementation. You'd need to really dig deep to find out for sure.

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