1 /* @(#)s_ldexp.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 #include <LibConfig.h> 13 #include <sys/EfiCdefs.h> 14 #if defined(LIBM_SCCS) && !defined(lint) 15 __RCSID("$NetBSD: s_ldexp.c,v 1.9 2002/05/26 22:01:56 wiz Exp $"); 16 #endif 17 18 #include <errno.h> 19 #include "math.h" 20 #include "math_private.h" 21 22 double 23 ldexp(double value, int exp) 24 { 25 if(!finite(value)||value==0.0) return value; 26 value = scalbn(value,exp); 27 if(!finite(value)||value==0.0) errno = ERANGE; 28 return value; 29 } 30
