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 #include <sys/cdefs.h>
17 #if defined(LIBM_SCCS) && !defined(lint)
18 __RCSID("$NetBSD: w_sqrtf.c,v 1.6 2002/05/26 22:02:03 wiz Exp $");
19 #endif
20
21 /*
22 * wrapper sqrtf(x)
23 */
24
25 #include "math.h"
26 #include "math_private.h"
27
28 float
sqrtf(float x)29 sqrtf(float x) /* wrapper sqrtf */
30 {
31 #ifdef _IEEE_LIBM
32 return __ieee754_sqrtf(x);
33 #else
34 float z;
35 z = __ieee754_sqrtf(x);
36 if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
37 if(x<(float)0.0) {
38 /* sqrtf(negative) */
39 return (float)__kernel_standard((double)x,(double)x,126);
40 } else
41 return z;
42 #endif
43 }
44