Lines Matching full:cacos
67 * The functions casin(h) and cacos(h) are about 2.5 times slower than asinh.
70 * The code for casinh, casin, cacos, and cacosh comes first. The code is
80 * | casinh, casin, cacos, cacosh |
146 * rx = Re(casinh(z)) = -Im(cacos(y + I*x)).
212 * later on. For cacos this would not be legitimate.
344 * cacos(z) = PI/2 - casin(z)
345 * but do the computation carefully so cacos(z) is accurate when z is
348 * cacos(z) = PI/2 - z + O(z^3) as z -> 0
350 * cacos(z) = -sign(y)*I*clog(z) + O(1/z^2) as z -> infinity
352 * Re(cacos(z)) = atan2(fabs(y), x) + O(y/z^3)
356 cacos(double complex z)
371 /* cacos(+-Inf + I*NaN) = NaN + I*opt(-)Inf */
374 /* cacos(NaN + I*+-Inf) = NaN + I*-+Inf */
377 /* cacos(0 + I*NaN) = PI/2 + I*NaN with inexact */
426 * cacosh(z) = I*cacos(z) or -I*cacos(z)
435 w = cacos(z);
