On Fri, 2007-03-09 at 21:08 -0800, Darrell Harmon wrote: > CORDIC should be able to handle +90 to -90 degrees with no prerotate > stage. With the addition of a 90 degree prerotate stage, the range > becomes -180 to +180 degrees.
This is what the documentation for the Opencores core suggested, but it appeared that with its aggregation constant, when you get to 90, the sine overflows, and glitches up. I expect it may work with the adjusted shift - the overflows I had on cosine around angle=0 went away. -- Peter Clifton Electrical Engineering Division, Engineering Department, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA Tel: +44 (0)7729 980173 - (No signal in the lab!) _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
