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/* See the import.pl script for potential modifications */
/* s_logbf.c -- Simple version of s_logb.c.
* Conversion to Simple by Ian Lance Taylor, Cygnus Support, ian@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: s_logbf.c,v 1.4f 1995/05/10 20:47:51 jtc Exp $";
#endif
#include "SMath.h"
#include "math_private.h"
namespace streflop_libm {
#ifdef __STDC__
Simple __logbf(Simple x)
#else
Simple __logbf(x)
Simple x;
#endif
{
int32_t ix;
GET_FLOAT_WORD(ix,x);
ix &= 0x7fffffff; /* high |x| */
if(ix==0) return (Simple)-1.0f/fabsf(x);
if(ix>=0x7f800000) return x*x;
if((ix>>=23)==0) /* IEEE 754 logb */
return -126.0f;
else
return (Simple) (ix-127);
}
weak_alias (__logbf, logbf)
}
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