1224110Sjchandra/* @(#)w_log10.c 5.1 93/09/24 */
2227783Sjchandra/*
3224110Sjchandra * ====================================================
4224110Sjchandra * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5224110Sjchandra *
6224110Sjchandra * Developed at SunPro, a Sun Microsystems, Inc. business.
7224110Sjchandra * Permission to use, copy, modify, and distribute this
8224110Sjchandra * software is freely granted, provided that this notice
9225394Sjchandra * is preserved.
10225394Sjchandra * ====================================================
11224110Sjchandra */
12225394Sjchandra
13225394Sjchandra#include <sys/cdefs.h>
14225394Sjchandra#if defined(LIBM_SCCS) && !defined(lint)
15225394Sjchandra__RCSID("$NetBSD: w_log10.c,v 1.10 2024/07/16 14:52:50 riastradh Exp $");
16225394Sjchandra#endif
17233541Sjchandra
18233541Sjchandra/*
19233541Sjchandra * wrapper log10(X)
20233541Sjchandra */
21233541Sjchandra
22233541Sjchandra#include "namespace.h"
23
24#include "math.h"
25#include "math_private.h"
26
27#ifndef __HAVE_LONG_DOUBLE
28__weak_alias(log10l, _log10l)
29__strong_alias(_log10l, _log10)
30#endif
31
32__weak_alias(log10, _log10)
33double
34log10(double x)		/* wrapper log10 */
35{
36#ifdef _IEEE_LIBM
37	return __ieee754_log10(x);
38#else
39	double z;
40	z = __ieee754_log10(x);
41	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
42	if(x<=0.0) {
43	    if(x==0.0)
44	        return __kernel_standard(x,x,18); /* log10(0) */
45	    else
46	        return __kernel_standard(x,x,19); /* log10(x<0) */
47	} else
48	    return z;
49#endif
50}
51