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diff --git a/fresnel/utilities.h b/fresnel/utilities.h
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+/*
+   This file is part of LPIC++, a particle-in-cell code for
+   simulating the interaction of laser light with plasma.
+
+   Copyright (C) 1994-1997 Roland Lichters
+
+   LPIC++ is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#ifndef UTILITIES_H
+#define UTILITIES_H
+
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <fstream>
+#include <string.h>
+#include <iomanip>
+#include <iostream>
+using namespace std;
+
+double** dmatrix( long nrl, long nrh, long ncl, long nch );
+void     delete_dmatrix( double **m, long nrl, long nrh, long ncl, long nch );
+float**  matrix( long nrl, long nrh, long ncl, long nch );
+void     delete_matrix( float **m, long nrl, long nrh, long ncl, long nch );
+unsigned char **ucmatrix(long nrl, long nrh, long ncl, long nch);
+void     delete_ucmatrix(unsigned char **m, long nrl, long nrh, long ncl, long nch);
+
+class Trash {
+  friend ifstream& operator>> (ifstream&, Trash&);
+private:
+  char string[1];
+};
+
+void error(char* s1, char*  s2="", char* s3="", char*  s4="");
+void error(char* s1, double d2,    char* s3="", char*  s4="");
+
+
+#endif