1/* w_log10f.c -- float version of w_log10.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
3 */
4
5/*
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
8 *
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
12 * is preserved.
13 * ====================================================
14 */
15
16#include <sys/cdefs.h>
17#if defined(LIBM_SCCS) && !defined(lint)
18__RCSID("$NetBSD: w_log10f.c,v 1.7 2024/07/16 14:52:50 riastradh Exp $");
19#endif
20
21/*
22 * wrapper log10f(X)
23 */
24
25#include "namespace.h"
26
27#include "math.h"
28#include "math_private.h"
29
30__weak_alias(log10f, _log10f)
31float
32log10f(float x)		/* wrapper log10f */
33{
34#ifdef _IEEE_LIBM
35	return __ieee754_log10f(x);
36#else
37	float z;
38	z = __ieee754_log10f(x);
39	if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
40	if(x<=(float)0.0) {
41	    if(x==(float)0.0)
42	        /* log10(0) */
43	        return (float)__kernel_standard((double)x,(double)x,118);
44	    else
45	        /* log10(x<0) */
46	        return (float)__kernel_standard((double)x,(double)x,119);
47	} else
48	    return z;
49#endif
50}
51