lib/libm/src/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 #include <sys/cdefs.h>
  17 #if defined(LIBM_SCCS) && !defined(lint)
  18 __RCSID("$NetBSD: w_j1f.c,v 1.6 2002/05/26 22:02:01 wiz Exp $");
  19 #endif
  20
  21 /*
  22  * wrapper of j1f,y1f
  23  */
  24
  25 #include "math.h"
  26 #include "math_private.h"
  27
  28 float
  29 j1f(float x)            /* wrapper j1f */
  30 {
  31 #ifdef _IEEE_LIBM
  32         return __ieee754_j1f(x);
  33 #else
  34         float z;
  35         z = __ieee754_j1f(x);
  36         if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
  37         if(fabsf(x)>(float)X_TLOSS) {
  38                 /* j1(|x|>X_TLOSS) */
  39                 return (float)__kernel_standard((double)x,(double)x,136);
  40         } else
  41             return z;
  42 #endif
  43 }
  44
  45 float
  46 y1f(float x)            /* wrapper y1f */
  47 {
  48 #ifdef _IEEE_LIBM
  49         return __ieee754_y1f(x);
  50 #else
  51         float z;
  52         z = __ieee754_y1f(x);
  53         if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
  54         if(x <= (float)0.0){
  55                 if(x==(float)0.0)
  56                     /* d= -one/(x-x); */
  57                     return (float)__kernel_standard((double)x,(double)x,110);
  58                 else
  59                     /* d = zero/(x-x); */
  60                     return (float)__kernel_standard((double)x,(double)x,111);
  61         }
  62         if(x>(float)X_TLOSS) {
  63                 /* y1(x>X_TLOSS) */
  64                 return (float)__kernel_standard((double)x,(double)x,137);
  65         } else
  66             return z;
  67 #endif
  68 }