base/math/s_ldexp.c

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#if !defined(__ppc__)
/* @(#)s_ldexp.c 5.1 93/09/24 */
/*
 * ====================================================
 * 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_ldexp.c,v 1.6 1995/05/10 20:47:40 jtc Exp $";
#endif

#include "math.h"
#include "mathP.h"
#include <linux/errno.h>

extern int libm_errno;

#ifdef __STDC__
    double ldexp(double value, int exp)
#else
    double ldexp(value, exp)
    double value; int exp;
#endif
{
    if(!finite(value)||value==0.0) return value;
    value = scalbn(value,exp);
    if(!finite(value)||value==0.0) libm_errno = ERANGE;
    return value;
}
#endif /* !__ppc__ */

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