math/w_j1.c

   1 /* @(#)w_j1.c 5.1 93/09/24 */
   2 /*
   3  * ====================================================
   4  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   5  *
   6  * Developed at SunPro, a Sun Microsystems, Inc. business.
   7  * Permission to use, copy, modify, and distribute this
   8  * software is freely granted, provided that this notice
   9  * is preserved.
  10  * ====================================================
  11  */
  12
  13 #if defined(LIBM_SCCS) && !defined(lint)
  14 static char rcsid[] = "$NetBSD: w_j1.c,v 1.6 1995/05/10 20:49:15 jtc Exp $";
  15 #endif
  16
  17 /*
  18  * wrapper of j1,y1
  19  */
  20
  21 #include <math.h>
  22 #include "math_private.h"
  23
  24 #ifdef __STDC__
  25         double j1(double x)             /* wrapper j1 */
  26 #else
  27         double j1(x)                    /* wrapper j1 */
  28         double x;
  29 #endif
  30 {
  31 #ifdef _IEEE_LIBM
  32         return __ieee754_j1(x);
  33 #else
  34         double z;
  35         z = __ieee754_j1(x);
  36         if(_LIB_VERSION == _IEEE_ || __isnan(x) ) return z;
  37         if(fabs(x)>X_TLOSS) {
  38                 return __kernel_standard(x,x,36); /* j1(|x|>X_TLOSS) */
  39         } else
  40             return z;
  41 #endif
  42 }
  43 #ifdef NO_LONG_DOUBLE
  44 strong_alias (j1, j1l)
  45 #endif
  46
  47
  48 #ifdef __STDC__
  49         double y1(double x)             /* wrapper y1 */
  50 #else
  51         double y1(x)                    /* wrapper y1 */
  52         double x;
  53 #endif
  54 {
  55 #ifdef _IEEE_LIBM
  56         return __ieee754_y1(x);
  57 #else
  58         double z;
  59         z = __ieee754_y1(x);
  60         if(_LIB_VERSION == _IEEE_ || __isnan(x) ) return z;
  61         if(x <= 0.0){
  62                 if(x==0.0)
  63                     /* d= -one/(x-x); */
  64                     return __kernel_standard(x,x,10);
  65                 else
  66                     /* d = zero/(x-x); */
  67                     return __kernel_standard(x,x,11);
  68         }
  69         if(x>X_TLOSS) {
  70                 return __kernel_standard(x,x,37); /* y1(x>X_TLOSS) */
  71         } else
  72             return z;
  73 #endif
  74 }
  75 #ifdef NO_LONG_DOUBLE
  76 strong_alias (y1, y1l)
  77 #endif