Ray Andraka, FPGA '98. It can also be used for log, exponent and square root. Common uses are sine and cosine generation, vector magnitude, polar-cartesian conversions, and vector rotation. To download the article from ACM, You need to first register as a visitor on ACM's site. Use the register now button under the nonmember heading to register.
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After registering, use the link to the definitive version and enter your email address in the username block. Leave the password block blank. The paper is apparently no longer available on-line. The link is to the HP Journal index for this issue.