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Inlining Fixed Point Math

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Fred Grott

Posts: 4361
Nickname: shareme
Registered: Jan, 2003

Fred Grott is Lead Developer-CEO of ShareMe Technologies LLC -The Mobile Future
Inlining Fixed Point Math Posted: Apr 11, 2005 10:56 AM
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This post originated from an RSS feed registered with Java Buzz by Fred Grott.
Original Post: Inlining Fixed Point Math
Feed Title: ShareMe Technologies LLC-The Mobile Future
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Feed Description: A Weblog about Java programming and digital convergence on mobile devices in such areas as P2P and collaborative technology. 		Latest Java Buzz Posts
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Seems inling Fixed POint math gives better performance benefit sthan my idea of using LOG functions to get around the ARM missing division instruction according to this devx article.

But the math steps I have already developed for the FP library still can be reused even in inlining so while the code library as a library is nto very usefull the information of inlining the saem math expression in game code is in fact very important. But we have another point to consider. as well not only my FP library.

Would that also mean because of the method overhead in calling another class(ie the new stack frame creation) that inlining fixed point math woudl have an advantage to someone relying on the CLDC 1.1 floating point math calls? If true than I have one up on every J2ME game programmmer relying on floating point math in CLDC 1.1? WOW!

For those using Antenna to preprocess code there is a patch in the article to use the FPComp parser to inline Fixed Point math expressions.

Read: Inlining Fixed Point Math

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