Appeal 2007-0018
Application 10/107,262
BACKGROUND
The invention relates to a method for providing sine and cosine value
pairs in response to a sine and cosine instruction.
Claim 1 is reproduced below.
1. A method comprising:
decoding a sine and cosine instruction;
generating two addresses to access a sine cosine table (SCT);
generating a plurality of quadrant bits;
reading a sine and cosine value pair from the SCT using said
two addresses;
adjusting a sign of each value of said sine and cosine value pair
using said plurality of quadrant bits, if necessary;
incrementing a phase value, if said phase value is to be
incremented;
executing said sine and cosine instruction using said sine and
cosine value pair; and
outputting at least one result.
THE REFERENCE
The examiner relies on the following reference:
Hu US 5,467,294 Nov. 18, 1995
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