From: Alexandre P. N. <al...@om...> - 2006-10-30 19:46:29
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Now and then people seems to face the need of faster floating-point computing on integer hardware, such as pxa. There are of course more elaborated (and complex) solutions, but I wish to point to ARM's application note 33, document name DAI0033A, that gives hints about fixed point arithmetic and how it compares to floating point arithmetic. I found it to be a nice introductory reading, since it also comes with code examples, both as C macros and assembler code (arm & thumb). I'm not sure if this application note is easily found on the ARM's web site or the internet as a whole; I got it from ARM on the technical publications cdrom, which can be ordered from the site for free. There are also other application notes I suspect are worth reading but I couldn't find the time (I'll get there eventually). - Alexandre |