| /* w_sqrtf.c -- float version of w_sqrt.c. |
| * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
| */ |
| |
| /* |
| * ==================================================== |
| * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| * |
| * Developed at SunPro, a Sun Microsystems, Inc. business. |
| * Permission to use, copy, modify, and distribute this |
| * software is freely granted, provided that this notice |
| * is preserved. |
| * ==================================================== |
| */ |
| |
| #if defined(LIBM_SCCS) && !defined(lint) |
| static char rcsid[] = "$NetBSD: w_sqrtf.c,v 1.3 1995/05/10 20:49:59 jtc Exp $"; |
| #endif |
| |
| /* |
| * wrapper sqrtf(x) |
| */ |
| |
| #include <math.h> |
| #include "math_private.h" |
| |
| #ifdef __STDC__ |
| float __sqrtf(float x) /* wrapper sqrtf */ |
| #else |
| float sqrt(x) /* wrapper sqrtf */ |
| float x; |
| #endif |
| { |
| #ifdef _IEEE_LIBM |
| return __ieee754_sqrtf(x); |
| #else |
| float z; |
| z = __ieee754_sqrtf(x); |
| if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z; |
| if(x<(float)0.0) { |
| /* sqrtf(negative) */ |
| return (float)__kernel_standard((double)x,(double)x,126); |
| } else |
| return z; |
| #endif |
| } |
| weak_alias (__sqrtf, sqrtf) |
