js/src/fdlibm/w_j1.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  *
   3  * ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is Mozilla Communicator client code, released
  17  * March 31, 1998.
  18  *
  19  * The Initial Developer of the Original Code is
  20  * Sun Microsystems, Inc.
  21  * Portions created by the Initial Developer are Copyright (C) 1998
  22  * the Initial Developer. All Rights Reserved.
  23  *
  24  * Contributor(s):
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either of the GNU General Public License Version 2 or later (the "GPL"),
  28  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  38  * ***** END LICENSE BLOCK ***** */
  39
  40 /* @(#)w_j1.c 1.3 95/01/18 */
  41 /*
  42  * ====================================================
  43  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  44  *
  45  * Developed at SunSoft, a Sun Microsystems, Inc. business.
  46  * Permission to use, copy, modify, and distribute this
  47  * software is freely granted, provided that this notice
  48  * is preserved.
  49  * ====================================================
  50  */
  51
  52 /*
  53  * wrapper of j1,y1
  54  */
  55
  56 #include "fdlibm.h"
  57
  58 #ifdef __STDC__
  59         double fd_j1(double x)          /* wrapper j1 */
  60 #else
  61         double fd_j1(x)                 /* wrapper j1 */
  62         double x;
  63 #endif
  64 {
  65 #ifdef _IEEE_LIBM
  66         return __ieee754_j1(x);
  67 #else
  68         double z;
  69         z = __ieee754_j1(x);
  70         if(_LIB_VERSION == _IEEE_ || fd_isnan(x) ) return z;
  71         if(fd_fabs(x)>X_TLOSS) {
  72         int err;
  73         return __kernel_standard(x,x,36,&err); /* j1(|x|>X_TLOSS) */
  74         } else
  75             return z;
  76 #endif
  77 }
  78
  79 #ifdef __STDC__
  80         double y1(double x)             /* wrapper y1 */
  81 #else
  82         double y1(x)                    /* wrapper y1 */
  83         double x;
  84 #endif
  85 {
  86 #ifdef _IEEE_LIBM
  87         return __ieee754_y1(x);
  88 #else
  89         double z;
  90     int err;
  91         z = __ieee754_y1(x);
  92         if(_LIB_VERSION == _IEEE_ || fd_isnan(x) ) return z;
  93         if(x <= 0.0){
  94                 if(x==0.0)
  95                     /* d= -one/(x-x); */
  96                     return __kernel_standard(x,x,10,&err);
  97                 else
  98                     /* d = zero/(x-x); */
  99                     return __kernel_standard(x,x,11,&err);
 100         }
 101         if(x>X_TLOSS) {
 102                 return __kernel_standard(x,x,37,&err); /* y1(x>X_TLOSS) */
 103         } else
 104             return z;
 105 #endif
 106 }