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