#numerical computation

[numericaladventures-blog]

Intro

I am trying to write a simulation system to investigate global climate, formation of dunes in a desert planet, flight characteristics of sondes, and whatnot. This will be my journal.

[cfrs]

Uh-oh. The advice “Use Double Precision” contradicts an ancient Rule of Thumb, namely “Arithmetic should be barely more precise than the data and the desired result” ... **This Rule of Thumb is Wrong.** It was never quite right, but it’s still being built into programming languages and taught in school. ... Why do so many people still believe in this wrong Rule of Thumb? What’s wrong with this Rule of Thumb? How, when and why did this wrong Rule of Thumb get put into so many programming languages? So it’s wrong. What should we be doing instead? The next twelve pages address these questions.

“How Java’s Floating-Point Hurts Everyone Everywhere” by Prof. W. Kahan and Joseph D. Darcy.

[mortgagearefinancingweb-blog]

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