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      1 /* w_jnf.c -- float version of w_jn.c.
      2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian (at) 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_jnf.c,v 1.6 2002/05/26 22:02:02 wiz Exp $");
     19 #endif
     20 
     21 #include "math.h"
     22 #include "math_private.h"
     23 
     24 float
     25 jnf(int n, float x)	/* wrapper jnf */
     26 {
     27 #ifdef _IEEE_LIBM
     28 	return __ieee754_jnf(n,x);
     29 #else
     30 	float z;
     31 	z = __ieee754_jnf(n,x);
     32 	if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
     33 	if(fabsf(x)>(float)X_TLOSS) {
     34 	    /* jn(|x|>X_TLOSS,n) */
     35 	    return (float)__kernel_standard((double)n,(double)x,138);
     36 	} else
     37 	    return z;
     38 #endif
     39 }
     40 
     41 float
     42 ynf(int n, float x)	/* wrapper ynf */
     43 {
     44 #ifdef _IEEE_LIBM
     45 	return __ieee754_ynf(n,x);
     46 #else
     47 	float z;
     48 	z = __ieee754_ynf(n,x);
     49 	if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
     50         if(x <= (float)0.0){
     51                 if(x==(float)0.0)
     52                     /* d= -one/(x-x); */
     53                     return (float)__kernel_standard((double)n,(double)x,112);
     54                 else
     55                     /* d = zero/(x-x); */
     56                     return (float)__kernel_standard((double)n,(double)x,113);
     57         }
     58 	if(x>(float)X_TLOSS) {
     59 	    /* yn(x>X_TLOSS,n) */
     60 	    return (float)__kernel_standard((double)n,(double)x,139);
     61 	} else
     62 	    return z;
     63 #endif
     64 }
     65