Inverse Square Root

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1 total messages Started by Matthew B Bloom Fri, 30 Oct 1992 15:15

#38

Author: Matthew B Bloom
Date: Fri, 30 Oct 1992 15:15

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I'm trying to prototype a system and need a method of obtaining an
inverse square-root from a 32 bit fixed-point number.  I only need 16
bit accuracy for the result.  I thought I could use just the high-16
bits to address a lookup PROM, but was told that my result would only be
valid for 8 bits...

What strategies could I use?  Are there any chips out there (short of a
DSP) that perform this function?  They would have to use re-iteration,
right??

Thanks for any help...

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