PROCESSOR TRIGONOMETRIC COMPUTATION

摘要

A method for a processor computing a first trigonometric function to use an alternative trigonometric function for certain ranges of the operand. A modulo function may be used to provide an operand with a reduced range, and the modulo function may subtract in multiple steps in a manner that preserves low-order bits.

主权项

1. A method for computing a trigonometric function for an operand x, comprising:
using, by a processor, a first algorithm when x is within a first range; and using, by the processor, a second algorithm when x is within a second range, where the first and second algorithms are different algorithms.