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Digital Arithmetic
book

Digital Arithmetic

by Miloš D. Ercegovac, Tomás Lang
September 2003
Intermediate to advanced content levelIntermediate to advanced
709 pages
26h 51m
English
Morgan Kaufmann
Content preview from Digital Arithmetic
638
c NAPTER
11
CORDIC Algorithm and Implementations
11.17
Radix 4
Compute sin(Jr/4) with a radix-4 CORDIC algorithm using an implementation
with carry-save adders and the following selection function:
5 14
2 if g <~[0]<-g
3 4
1 if g <~[0]<
4 2
o'0--
0 if-g <~[0]< g
7 5
-1 if-g <G[0]_< 8
_.1~ _< G[0] _< -
~ 2
if
1
and for j > 0,
21
2 if !~ < ~[jl < F
4 11
1 if g <~[j]<-g-
4 3
crj-- 0 if-g <~[j]<
5
-1 if -~ < ~[j] < -g
-2 if -~ <G[j] <_
__ 138
where w[j] = 2Jz[j] and ~[j] is the carry-save w[j] truncated to 3 fractional
bits.
Perform three iterations and determine the error. Determine the (variable) ...
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Publisher Resources

ISBN: 9781558607989