1
2/* @(#)w_log10.c 1.3 95/01/18 */
3/*
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 *
7 * Developed at SunSoft, a Sun Microsystems, Inc. business.
8 * Permission to use, copy, modify, and distribute this
9 * software is freely granted, provided that this notice
10 * is preserved.
11 * ====================================================
12 */
13
14/*
15 * wrapper ieee_log10(X)
16 */
17
18#include "fdlibm.h"
19
20
21#ifdef __STDC__
22	double ieee_log10(double x)		/* wrapper log10 */
23#else
24	double ieee_log10(x)			/* wrapper log10 */
25	double x;
26#endif
27{
28#ifdef _IEEE_LIBM
29	return __ieee754_log10(x);
30#else
31	double z;
32	z = __ieee754_log10(x);
33	if(_LIB_VERSION == _IEEE_ || ieee_isnan(x)) return z;
34	if(x<=0.0) {
35	    if(x==0.0)
36	        return __kernel_standard(x,x,18); /* ieee_log10(0) */
37	    else
38	        return __kernel_standard(x,x,19); /* ieee_log10(x<0) */
39	} else
40	    return z;
41#endif
42}
43