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lightning-sunbird  0.9+nobinonly
w_j1.c
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00001 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  *
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
00008  * the License. You may obtain a copy of the License at
00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is Mozilla Communicator client code, released
00017  * March 31, 1998.
00018  *
00019  * The Initial Developer of the Original Code is
00020  * Sun Microsystems, Inc.
00021  * Portions created by the Initial Developer are Copyright (C) 1998
00022  * the Initial Developer. All Rights Reserved.
00023  *
00024  * Contributor(s):
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either of the GNU General Public License Version 2 or later (the "GPL"),
00028  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
00030  * of those above. If you wish to allow use of your version of this file only
00031  * under the terms of either the GPL or the LGPL, and not to allow others to
00032  * use your version of this file under the terms of the MPL, indicate your
00033  * decision by deleting the provisions above and replace them with the notice
00034  * and other provisions required by the GPL or the LGPL. If you do not delete
00035  * the provisions above, a recipient may use your version of this file under
00036  * the terms of any one of the MPL, the GPL or the LGPL.
00037  *
00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 /* @(#)w_j1.c 1.3 95/01/18 */
00041 /*
00042  * ====================================================
00043  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
00044  *
00045  * Developed at SunSoft, a Sun Microsystems, Inc. business.
00046  * Permission to use, copy, modify, and distribute this
00047  * software is freely granted, provided that this notice 
00048  * is preserved.
00049  * ====================================================
00050  */
00051 
00052 /* 
00053  * wrapper of j1,y1 
00054  */
00055 
00056 #include "fdlibm.h"
00057 
00058 #ifdef __STDC__
00059        double fd_j1(double x)             /* wrapper j1 */
00060 #else
00061        double fd_j1(x)                    /* wrapper j1 */
00062        double x;
00063 #endif
00064 {
00065 #ifdef _IEEE_LIBM
00066        return __ieee754_j1(x);
00067 #else
00068        double z;
00069        z = __ieee754_j1(x);
00070        if(_LIB_VERSION == _IEEE_ || fd_isnan(x) ) return z;
00071        if(fd_fabs(x)>X_TLOSS) {
00072         int err;
00073         return __kernel_standard(x,x,36,&err); /* j1(|x|>X_TLOSS) */
00074        } else
00075            return z;
00076 #endif
00077 }
00078 
00079 #ifdef __STDC__
00080        double y1(double x)         /* wrapper y1 */
00081 #else
00082        double y1(x)                /* wrapper y1 */
00083        double x;
00084 #endif
00085 {
00086 #ifdef _IEEE_LIBM
00087        return __ieee754_y1(x);
00088 #else
00089        double z;
00090     int err;
00091        z = __ieee754_y1(x);
00092        if(_LIB_VERSION == _IEEE_ || fd_isnan(x) ) return z;
00093         if(x <= 0.0){
00094                 if(x==0.0)
00095                     /* d= -one/(x-x); */
00096                     return __kernel_standard(x,x,10,&err);
00097                 else
00098                     /* d = zero/(x-x); */
00099                     return __kernel_standard(x,x,11,&err);
00100         }
00101        if(x>X_TLOSS) {
00102                return __kernel_standard(x,x,37,&err); /* y1(x>X_TLOSS) */
00103        } else
00104            return z;
00105 #endif
00106 }