1/* @(#)s_ldexp0.c 5.1 93/09/24 */ 2/* 3 * ==================================================== 4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 5 * 6 * Developed at SunPro, a Sun Microsystems, Inc. business. 7 * Permission to use, copy, modify, and distribute this 8 * software is freely granted, provided that this notice 9 * is preserved. 10 * ==================================================== 11 */ 12 13#include <sys/cdefs.h> 14#if defined(LIBM_SCCS) && !defined(lint) 15__RCSID("$NetBSD: s_ldexp.c,v 1.10 2008/04/25 22:21:53 christos Exp $"); 16#endif 17 18#include "namespace.h" 19#include "math.h" 20#include "math_private.h" 21#include <errno.h> 22 23double 24ldexp(double value, int exp0) 25{ 26 if(!finite(value)||value==0.0) return value; 27 value = scalbn(value,exp0); 28 if(!finite(value)||value==0.0) errno = ERANGE; 29 return value; 30} 31