mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 02:50:09 +00:00
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
|
/* w_sqrtl.c -- long double version of w_sqrt.c.
|
||
|
|
* Conversion to long double by Ulrich Drepper,
|
||
|
|
* Cygnus Support, drepper@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: $";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* wrapper sqrtl(x)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "math.h"
|
||
|
|
#include "math_private.h"
|
||
|
|
|
||
|
|
#ifdef __STDC__
|
||
|
|
long double __sqrtl(long double x) /* wrapper sqrtl */
|
||
|
|
#else
|
||
|
|
long double __sqrtl(x) /* wrapper sqrtl */
|
||
|
|
long double x;
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
#ifdef _IEEE_LIBM
|
||
|
|
return __ieee754_sqrtl(x);
|
||
|
|
#else
|
||
|
|
long double z;
|
||
|
|
z = __ieee754_sqrtl(x);
|
||
|
|
if(_LIB_VERSION == _IEEE_ || __isnanl(x)) return z;
|
||
|
|
if(x<0.0) {
|
||
|
|
return __kernel_standard(x,x,226); /* sqrt(negative) */
|
||
|
|
} else
|
||
|
|
return z;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
weak_alias (__sqrtl, sqrtl)
|