vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
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w_y0f.c (1351B)


      1 /* w_y0f.c -- float version of w_y0.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 #ifndef lint
     17 static char rcsid[] = "$FreeBSD: src/lib/msun/src/w_y0f.c,v 1.5 2002/05/28 18:15:04 alfred Exp $";
     18 #endif
     19 
     20 /*
     21  * wrapper y0f(float x)
     22  */
     23 
     24 #include "math.h"
     25 #include "math_private.h"
     26 
     27 float
     28 y0f(float x)		/* wrapper y0f */
     29 {
     30 #ifdef _IEEE_LIBM
     31 	return __ieee754_y0f(x);
     32 #else
     33 	float z;
     34 	z = __ieee754_y0f(x);
     35 	if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z;
     36         if(x <= (float)0.0){
     37                 if(x==(float)0.0)
     38                     /* d= -one/(x-x); */
     39                     return (float)__kernel_standard((double)x,(double)x,108);
     40                 else
     41                     /* d = zero/(x-x); */
     42                     return (float)__kernel_standard((double)x,(double)x,109);
     43         }
     44 	if(x>(float)X_TLOSS) {
     45 		/* y0(x>X_TLOSS) */
     46 	        return (float)__kernel_standard((double)x,(double)x,135);
     47 	} else
     48 	    return z;
     49 #endif
     50 }