invtrig.c revision 181074
1181074Sdas/*- 2181074Sdas * Copyright (c) 2008 David Schultz <das@FreeBSD.ORG> 3181074Sdas * All rights reserved. 4181074Sdas * 5181074Sdas * Redistribution and use in source and binary forms, with or without 6181074Sdas * modification, are permitted provided that the following conditions 7181074Sdas * are met: 8181074Sdas * 1. Redistributions of source code must retain the above copyright 9181074Sdas * notice, this list of conditions and the following disclaimer. 10181074Sdas * 2. Redistributions in binary form must reproduce the above copyright 11181074Sdas * notice, this list of conditions and the following disclaimer in the 12181074Sdas * documentation and/or other materials provided with the distribution. 13181074Sdas * 14181074Sdas * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15181074Sdas * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16181074Sdas * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17181074Sdas * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18181074Sdas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19181074Sdas * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20181074Sdas * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21181074Sdas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22181074Sdas * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23181074Sdas * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24181074Sdas * SUCH DAMAGE. 25181074Sdas */ 26181074Sdas 27181074Sdas#include <sys/cdefs.h> 28181074Sdas__FBSDID("$FreeBSD: head/lib/msun/ld80/invtrig.c 181074 2008-07-31 22:41:26Z das $"); 29181074Sdas 30181074Sdas#include "invtrig.h" 31181074Sdas 32181074Sdas/* 33181074Sdas * asinl() and acosl() 34181074Sdas */ 35181074Sdasconst long double 36181074SdaspS0 = 1.66666666666666666631e-01L, 37181074SdaspS1 = -4.16313987993683104320e-01L, 38181074SdaspS2 = 3.69068046323246813704e-01L, 39181074SdaspS3 = -1.36213932016738603108e-01L, 40181074SdaspS4 = 1.78324189708471965733e-02L, 41181074SdaspS5 = -2.19216428382605211588e-04L, 42181074SdaspS6 = -7.10526623669075243183e-06L, 43181074SdasqS1 = -2.94788392796209867269e+00L, 44181074SdasqS2 = 3.27309890266528636716e+00L, 45181074SdasqS3 = -1.68285799854822427013e+00L, 46181074SdasqS4 = 3.90699412641738801874e-01L, 47181074SdasqS5 = -3.14365703596053263322e-02L; 48181074Sdas 49181074Sdas/* 50181074Sdas * atanl() 51181074Sdas */ 52181074Sdasconst long double atanhi[] = { 53181074Sdas 4.63647609000806116202e-01L, 54181074Sdas 7.85398163397448309628e-01L, 55181074Sdas 9.82793723247329067960e-01L, 56181074Sdas 1.57079632679489661926e+00L, 57181074Sdas}; 58181074Sdas 59181074Sdasconst long double atanlo[] = { 60181074Sdas 1.18469937025062860669e-20L, 61181074Sdas -1.25413940316708300586e-20L, 62181074Sdas 2.55232234165405176172e-20L, 63181074Sdas -2.50827880633416601173e-20L, 64181074Sdas}; 65181074Sdas 66181074Sdasconst long double aT[] = { 67181074Sdas 3.33333333333333333017e-01L, 68181074Sdas -1.99999999999999632011e-01L, 69181074Sdas 1.42857142857046531280e-01L, 70181074Sdas -1.11111111100562372733e-01L, 71181074Sdas 9.09090902935647302252e-02L, 72181074Sdas -7.69230552476207730353e-02L, 73181074Sdas 6.66661718042406260546e-02L, 74181074Sdas -5.88158892835030888692e-02L, 75181074Sdas 5.25499891539726639379e-02L, 76181074Sdas -4.70119845393155721494e-02L, 77181074Sdas 4.03539201366454414072e-02L, 78181074Sdas -2.91303858419364158725e-02L, 79181074Sdas 1.24822046299269234080e-02L, 80181074Sdas}; 81181074Sdas 82181074Sdasconst long double pi_lo = -5.01655761266833202345e-20L; 83