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endl_precision.hpp

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00001 /*
00002  * ******** fete: From ENDF To ENDL *********
00003  * 
00004  * Copyright (c) 2006, The Regents of the University of California. 
00005  * All rights reserved.
00006  * 
00007  * Produced at the Lawrence Livermore National Laboratory. 
00008  * Written by David A. Brown, Gerry Hedstrom, Tony Hill
00009  * 
00010  * This file is part of fete v1.0  (UCRL-CODE-218718)
00011  * 
00012  * Please read the COPYING file for "Our Notice and GNU General 
00013  * Public License" in the root of this software distribution.  
00014  * 
00015  * This program is free software; you can redistribute it and/or modify 
00016  * it under the terms of the GNU General Public License (as published by 
00017  * the Free Software Foundation) version 2, dated June 1991. 
00018  * 
00019  * This program is distributed in the hope that it will be useful, 
00020  * but WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF 
00021  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms 
00022  * and conditions of the GNU General Public License for more details. 
00023  * 
00024  * You should have received a copy of the GNU General Public License along 
00025  * with this program; if not, write to the Free Software Foundation, Inc., 
00026  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
00027  * 
00028  * $Revision: 1867 $
00029  * $Date: 2006-05-15 10:19:04 -0700 (Mon, 15 May 2006) $
00030  * $Author: dbrown $
00031  * $Id: endl_precision.hpp 1867 2006-05-15 17:19:04Z dbrown $
00032  * 
00033  * ******** fete: From ENDF To ENDL *********
00034  */
00035 
00036 #ifndef __ENDL_PRECISION_H
00037 #define __ENDL_PRECISION_H
00038 
00039 #include "global_params.hpp"
00040 
00041 extern GlobalParameterClass Global;
00042 
00043 //! The smallest energy difference, but make it positive
00044 double ENDL_EPSILON( double E );
00045 
00046 //! The width of a jump
00047 inline double ENDL_JUMP_WIDTH( double E )
00048 { return Global.Value("jump_factor")*ENDL_EPSILON( E ); }
00049 //{ return 2.0*ENDL_EPSILON( E ); }
00050 
00051 //! Make a delta function wider than a jump.
00052 inline double DELTA_WIDTH( double E )
00053 { return 1.1*Global.Value("jump_factor")*ENDL_EPSILON( E ); }
00054 //{ return 2.2*ENDL_EPSILON( E ); }
00055 
00056 #endif

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