POK
/home/jaouen/pok_official/pok/trunk/libpok/libm/ldexp.c
00001 /*
00002  *                               POK header
00003  * 
00004  * The following file is a part of the POK project. Any modification should
00005  * made according to the POK licence. You CANNOT use this file or a part of
00006  * this file is this part of a file for your own project
00007  *
00008  * For more information on the POK licence, please see our LICENCE FILE
00009  *
00010  * Please follow the coding guidelines described in doc/CODING_GUIDELINES
00011  *
00012  *                                      Copyright (c) 2007-2009 POK team 
00013  *
00014  * Created by julien on Fri Jan 30 14:41:34 2009 
00015  */
00016 
00017 /* @(#)s_ldexp0.c 5.1 93/09/24 */
00018 /*
00019  * ====================================================
00020  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
00021  *
00022  * Developed at SunPro, a Sun Microsystems, Inc. business.
00023  * Permission to use, copy, modify, and distribute this
00024  * software is freely granted, provided that this notice
00025  * is preserved.
00026  * ====================================================
00027  */
00028 
00029 #ifdef POK_NEEDS_LIBMATH
00030 
00031 #include <libm.h>
00032 #include "math_private.h"
00033 #include <errno.h>
00034 
00035 double
00036 ldexp(double value, int exp0)
00037 {
00038         if(!finite(value)||value==0.0) return value;
00039         value = scalbn(value,exp0);
00040         /*if(!finite(value)||value==0.0) errno = POK_ERRNO_ERANGE;*/
00041         return value;
00042 }
00043 
00044 #endif