1*05a0b428SJohn Marino /* $OpenBSD: invtrig.c,v 1.1 2008/12/09 20:00:35 martynas Exp $ */ 2*05a0b428SJohn Marino /*- 3*05a0b428SJohn Marino * Copyright (c) 2008 David Schultz <das@FreeBSD.ORG> 4*05a0b428SJohn Marino * All rights reserved. 5*05a0b428SJohn Marino * 6*05a0b428SJohn Marino * Redistribution and use in source and binary forms, with or without 7*05a0b428SJohn Marino * modification, are permitted provided that the following conditions 8*05a0b428SJohn Marino * are met: 9*05a0b428SJohn Marino * 1. Redistributions of source code must retain the above copyright 10*05a0b428SJohn Marino * notice, this list of conditions and the following disclaimer. 11*05a0b428SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright 12*05a0b428SJohn Marino * notice, this list of conditions and the following disclaimer in the 13*05a0b428SJohn Marino * documentation and/or other materials provided with the distribution. 14*05a0b428SJohn Marino * 15*05a0b428SJohn Marino * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16*05a0b428SJohn Marino * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17*05a0b428SJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18*05a0b428SJohn Marino * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19*05a0b428SJohn Marino * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20*05a0b428SJohn Marino * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21*05a0b428SJohn Marino * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22*05a0b428SJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23*05a0b428SJohn Marino * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24*05a0b428SJohn Marino * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25*05a0b428SJohn Marino * SUCH DAMAGE. 26*05a0b428SJohn Marino */ 27*05a0b428SJohn Marino 28*05a0b428SJohn Marino #include "invtrig.h" 29*05a0b428SJohn Marino 30*05a0b428SJohn Marino /* 31*05a0b428SJohn Marino * asinl() and acosl() 32*05a0b428SJohn Marino */ 33*05a0b428SJohn Marino const long double 34*05a0b428SJohn Marino pS0 = 1.66666666666666666631e-01L, 35*05a0b428SJohn Marino pS1 = -4.16313987993683104320e-01L, 36*05a0b428SJohn Marino pS2 = 3.69068046323246813704e-01L, 37*05a0b428SJohn Marino pS3 = -1.36213932016738603108e-01L, 38*05a0b428SJohn Marino pS4 = 1.78324189708471965733e-02L, 39*05a0b428SJohn Marino pS5 = -2.19216428382605211588e-04L, 40*05a0b428SJohn Marino pS6 = -7.10526623669075243183e-06L, 41*05a0b428SJohn Marino qS1 = -2.94788392796209867269e+00L, 42*05a0b428SJohn Marino qS2 = 3.27309890266528636716e+00L, 43*05a0b428SJohn Marino qS3 = -1.68285799854822427013e+00L, 44*05a0b428SJohn Marino qS4 = 3.90699412641738801874e-01L, 45*05a0b428SJohn Marino qS5 = -3.14365703596053263322e-02L; 46*05a0b428SJohn Marino 47*05a0b428SJohn Marino /* 48*05a0b428SJohn Marino * atanl() 49*05a0b428SJohn Marino */ 50*05a0b428SJohn Marino const long double atanhi[] = { 51*05a0b428SJohn Marino 4.63647609000806116202e-01L, 52*05a0b428SJohn Marino 7.85398163397448309628e-01L, 53*05a0b428SJohn Marino 9.82793723247329067960e-01L, 54*05a0b428SJohn Marino 1.57079632679489661926e+00L, 55*05a0b428SJohn Marino }; 56*05a0b428SJohn Marino 57*05a0b428SJohn Marino const long double atanlo[] = { 58*05a0b428SJohn Marino 1.18469937025062860669e-20L, 59*05a0b428SJohn Marino -1.25413940316708300586e-20L, 60*05a0b428SJohn Marino 2.55232234165405176172e-20L, 61*05a0b428SJohn Marino -2.50827880633416601173e-20L, 62*05a0b428SJohn Marino }; 63*05a0b428SJohn Marino 64*05a0b428SJohn Marino const long double aT[] = { 65*05a0b428SJohn Marino 3.33333333333333333017e-01L, 66*05a0b428SJohn Marino -1.99999999999999632011e-01L, 67*05a0b428SJohn Marino 1.42857142857046531280e-01L, 68*05a0b428SJohn Marino -1.11111111100562372733e-01L, 69*05a0b428SJohn Marino 9.09090902935647302252e-02L, 70*05a0b428SJohn Marino -7.69230552476207730353e-02L, 71*05a0b428SJohn Marino 6.66661718042406260546e-02L, 72*05a0b428SJohn Marino -5.88158892835030888692e-02L, 73*05a0b428SJohn Marino 5.25499891539726639379e-02L, 74*05a0b428SJohn Marino -4.70119845393155721494e-02L, 75*05a0b428SJohn Marino 4.03539201366454414072e-02L, 76*05a0b428SJohn Marino -2.91303858419364158725e-02L, 77*05a0b428SJohn Marino 1.24822046299269234080e-02L, 78*05a0b428SJohn Marino }; 79*05a0b428SJohn Marino 80*05a0b428SJohn Marino const long double pi_lo = -5.01655761266833202345e-20L; 81