1 2/* @(#)e_acos.c 1.3 95/01/18 */ 3/* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunSoft, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 */ 13 |
14#include <sys/cdefs.h> 15__FBSDID("$FreeBSD: head/lib/msun/src/e_acos.c 176451 2008-02-22 02:30:36Z das $"); |
16 17/* __ieee754_acos(x) 18 * Method : 19 * acos(x) = pi/2 - asin(x) 20 * acos(-x) = pi/2 + asin(x) 21 * For |x|<=0.5 22 * acos(x) = pi/2 - (x + x*x^2*R(x^2)) (see asin.c) 23 * For x>0.5 --- 80 unchanged lines hidden --- |