sysdeps/generic/w_j0f.c

   1 /* w_j0f.c -- float version of w_j0.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_j0f.c,v 1.3 1995/05/10 20:49:13 jtc Exp $";
  18 #endif
  19
  20 /*
  21  * wrapper j0f(float x), y0f(float x)
  22  */
  23
  24 #include "math.h"
  25 #include "math_private.h"
  26
  27 #ifdef __STDC__
  28         float j0f(float x)              /* wrapper j0f */
  29 #else
  30         float j0f(x)                    /* wrapper j0f */
  31         float x;
  32 #endif
  33 {
  34 #ifdef _IEEE_LIBM
  35         return __ieee754_j0f(x);
  36 #else
  37         float z = __ieee754_j0f(x);
  38         if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z;
  39         if(fabsf(x)>(float)X_TLOSS) {
  40                 /* j0f(|x|>X_TLOSS) */
  41                 return (float)__kernel_standard((double)x,(double)x,134);
  42         } else
  43             return z;
  44 #endif
  45 }
  46
  47 #ifdef __STDC__
  48         float y0f(float x)              /* wrapper y0f */
  49 #else
  50         float y0f(x)                    /* wrapper y0f */
  51         float x;
  52 #endif
  53 {
  54 #ifdef _IEEE_LIBM
  55         return __ieee754_y0f(x);
  56 #else
  57         float z;
  58         z = __ieee754_y0f(x);
  59         if(_LIB_VERSION == _IEEE_ || __isnanf(x) ) return z;
  60         if(x <= (float)0.0){
  61                 if(x==(float)0.0)
  62                     /* d= -one/(x-x); */
  63                     return (float)__kernel_standard((double)x,(double)x,108);
  64                 else
  65                     /* d = zero/(x-x); */
  66                     return (float)__kernel_standard((double)x,(double)x,109);
  67         }
  68         if(x>(float)X_TLOSS) {
  69                 /* y0(x>X_TLOSS) */
  70                 return (float)__kernel_standard((double)x,(double)x,135);
  71         } else
  72             return z;
  73 #endif
  74 }