lib/libm/src/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 #include <sys/cdefs.h>
  17 #if defined(LIBM_SCCS) && !defined(lint)
  18 __RCSID("$NetBSD: w_j0f.c,v 1.6 2002/05/26 22:02:01 wiz Exp $");
  19 #endif
  20
  21 /*
  22  * wrapper j0f(float x), y0f(float x)
  23  */
  24
  25 #include "math.h"
  26 #include "math_private.h"
  27
  28 float
  29 j0f(float x)            /* wrapper j0f */
  30 {
  31 #ifdef _IEEE_LIBM
  32         return __ieee754_j0f(x);
  33 #else
  34         float z = __ieee754_j0f(x);
  35         if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
  36         if(fabsf(x)>(float)X_TLOSS) {
  37                 /* j0f(|x|>X_TLOSS) */
  38                 return (float)__kernel_standard((double)x,(double)x,134);
  39         } else
  40             return z;
  41 #endif
  42 }
  43
  44 float
  45 y0f(float x)            /* wrapper y0f */
  46 {
  47 #ifdef _IEEE_LIBM
  48         return __ieee754_y0f(x);
  49 #else
  50         float z;
  51         z = __ieee754_y0f(x);
  52         if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
  53         if(x <= (float)0.0){
  54                 if(x==(float)0.0)
  55                     /* d= -one/(x-x); */
  56                     return (float)__kernel_standard((double)x,(double)x,108);
  57                 else
  58                     /* d = zero/(x-x); */
  59                     return (float)__kernel_standard((double)x,(double)x,109);
  60         }
  61         if(x>(float)X_TLOSS) {
  62                 /* y0(x>X_TLOSS) */
  63                 return (float)__kernel_standard((double)x,(double)x,135);
  64         } else
  65             return z;
  66 #endif
  67 }