sysdeps/generic/w_j1f.c

   1 /* w_j1f.c -- float version of w_j1.c.
   2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
   3  */
   4
   5 /*
   6  * ====================================================
   7  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   8  *
   9  * Developed at SunPro, a Sun Microsystems, Inc. business.
  10  * Permission to use, copy, modify, and distribute this
  11  * software is freely granted, provided that this notice
  12  * is preserved.
  13  * ====================================================
  14  */
  15
  16 #if defined(LIBM_SCCS) && !defined(lint)
  17 static char rcsid[] = "$NetBSD: w_j1f.c,v 1.3 1995/05/10 20:49:17 jtc Exp $";
  18 #endif
  19
  20 /*
  21  * wrapper of j1f,y1f
  22  */
  23
  24 #include "math.h"
  25 #include "math_private.h"
  26
  27 #ifdef __STDC__
  28         float j1f(float x)              /* wrapper j1f */
  29 #else
  30         float j1f(x)                    /* wrapper j1f */
  31         float x;
  32 #endif
  33 {
  34 #ifdef _IEEE_LIBM
  35         return __ieee754_j1f(x);
  36 #else
  37         float z;
  38         z = __ieee754_j1f(x);
  39         if(_LIB_VERSION == _IEEE_ || __isnanf(x) ) return z;
  40         if(fabsf(x)>(float)X_TLOSS) {
  41                 /* j1(|x|>X_TLOSS) */
  42                 return (float)__kernel_standard((double)x,(double)x,136);
  43         } else
  44             return z;
  45 #endif
  46 }
  47
  48 #ifdef __STDC__
  49         float y1f(float x)              /* wrapper y1f */
  50 #else
  51         float y1f(x)                    /* wrapper y1f */
  52         float x;
  53 #endif
  54 {
  55 #ifdef _IEEE_LIBM
  56         return __ieee754_y1f(x);
  57 #else
  58         float z;
  59         z = __ieee754_y1f(x);
  60         if(_LIB_VERSION == _IEEE_ || __isnanf(x) ) return z;
  61         if(x <= (float)0.0){
  62                 if(x==(float)0.0)
  63                     /* d= -one/(x-x); */
  64                     return (float)__kernel_standard((double)x,(double)x,110);
  65                 else
  66                     /* d = zero/(x-x); */
  67                     return (float)__kernel_standard((double)x,(double)x,111);
  68         }
  69         if(x>(float)X_TLOSS) {
  70                 /* y1(x>X_TLOSS) */
  71                 return (float)__kernel_standard((double)x,(double)x,137);
  72         } else
  73             return z;
  74 #endif
  75 }