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Programming > Assembly x86 > Fixed pt vs Flo...
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Fixed pt vs Floating pt for speed

by Justin.Voo <spamtrap@[EMAIL PROTECTED] > Mar 15, 2008 at 06:11 AM

Hi,

In general, which type of arithmetic would be done faster on a modern
desktop pc where accuracy and the dynamic range of floating point were
not
important?

a)16 bit fixed point using 8 way SIMD
b)32 bit single precision floating point using 4 way SIMD

>From what I've read, b) would be as fast/faster on modern cpus, but
wouldn't being able to operate on twice the amount of data per
operation
make up for/or exceed that?

Thanks!




 3 Posts in Topic:
Fixed pt vs Floating pt for speed
Justin.Voo <spamtrap@[  2008-03-15 06:11:10 
Re: Fixed pt vs Floating pt for speed
YANSWBVCG <spamtrap@[  2008-03-15 13:44:03 
Re: Fixed pt vs Floating pt for speed
Jake Waskett <spamtra  2008-03-15 20:59:05 

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tan12V112 Wed May 14 10:59:20 CDT 2008.