The K5 transcendental functions

Authors:
T. Lynch;A. Ahmed;M. Schulte;T. Callaway;R. Tisdale
Affiliations:
-;-;-;-;-
Venue:
ARITH '95 Proceedings of the 12th Symposium on Computer Arithmetic
Year:
1995

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Abstract

This paper describes the development of the transcendental instructions for the K5, AMD's recently completed x86 compatible superscalar microprocessor. A multi-level development cycle, with testing between levels, facilitated the early detection of errors and limited their effect on the design schedule. The algorithms for the transcendental functions use table-driven reductions followed by polynomial approximations. Multiprecision arithmetic operations are used when necessary to maintain sufficient accuracy and to ensure that the transcendental functions have a maximum error of one unit in the last place.