/* @(#)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 "math_private.h" #include <errno.h> #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) errno = ERANGE; return value; }