Lines Matching refs:ieee_cos
182 // 1. Since ieee_cos(-x) = ieee_cos(x), we need only to consider positive x.
183 // 2. ieee_cos(x) is approximated by a polynomial of degree 14 on
190 // |ieee_cos(x)-(1-.5*x +C1*x +C2*x +C3*x +C4*x +C5*x +C6*x )| <= 2
195 // ieee_cos(x) = 1 - x*x/2 + r
196 // since ieee_cos(X+Y) ~ ieee_cos(X) - ieee_sin(X)*Y
197 // ~ ieee_cos(X) - X*Y,
198 // a correction term is necessary in ieee_cos(x) and hence
