vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
Log | Files | Refs

w_sqrtf.c (1024B)

      1 /* w_sqrtf.c -- float version of w_sqrt.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_sqrtf.c,v 1.7 2002/05/28 18:15:04 alfred Exp $";
     18 #endif
     19 
     20 /*
     21  * wrapper sqrtf(x)
     22  */
     23 
     24 #include "math.h"
     25 #include "math_private.h"
     26 
     27 float
     28 sqrtf(float x)		/* wrapper sqrtf */
     29 {
     30 #ifdef _IEEE_LIBM
     31 	return __ieee754_sqrtf(x);
     32 #else
     33 	float z;
     34 	z = __ieee754_sqrtf(x);
     35 	if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
     36 	if(x<(float)0.0) {
     37 	    /* sqrtf(negative) */
     38 	    return (float)__kernel_standard((double)x,(double)x,126);
     39 	} else
     40 	    return z;
     41 #endif
     42 }