We present a new way of approximating the sineand cosine functions by a few table look-ups and additions. Itconsists in first reducing the input range to a very small intervalby using rotations with "(M; p; k) friendly angles", proposedin this work, and then by using a bipartite table method ina small interval. An implementation of the method for 24-bit case is described and compared with CORDIC. Roughly,the proposed scheme offers a speedup of 2 compared with anunfolded double-rotation radix-2 CORDIC.
['Nicolas Brisebarre', 'Milos D. Ercegovac', 'Jean-Michel Muller']
(M, p, k)-Friendly Points: A Table-Based Method for Trigonometric Function Evaluation