glibc/math/w_log10l.c

52 lines
1.2 KiB
C

/* w_log10l.c -- long double version of w_log10.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 log10l(X)
*/
#include "math.h"
#include "math_private.h"
#ifdef __STDC__
long double __log10l(long double x) /* wrapper log10l */
#else
long double __log10l(x) /* wrapper log10l */
long double x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_log10l(x);
#else
long double z;
z = __ieee754_log10l(x);
if(_LIB_VERSION == _IEEE_ || __isnanl(x)) return z;
if(x<=0.0) {
if(x==0.0)
return __kernel_standard(x,x,218); /* log10(0) */
else
return __kernel_standard(x,x,219); /* log10(x<0) */
} else
return z;
#endif
}
weak_alias (__log10l, log10l)