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diff --git a/relcatalogif/integraltype.hh b/relcatalogif/integraltype.hh
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+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community 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 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community 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 rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+/*************************************************************
+ *
+ *
+ * PURPOSE:
+ *   The IntegralType class is the superclass for all signed integral
+ *   types (e.g. Char, Long) describing the type of a 
+ *   cell
+ *
+ *
+ * COMMENTS:
+ *
+ ************************************************************/
+
+#ifndef _INTEGRALTYPE_HH_
+#define _INTEGRALTYPE_HH_
+
+#include "atomictype.hh"
+
+//@ManMemo: Module: {\bf relcatalogif}.
+
+/*@Doc: 
+IntegralType is the abstract base class for all integral signed
+\Ref{BaseType} subclasses, i.e. base types like \Ref{LongType} or
+\Ref{ShortType}. It provides conversions to/from unsigned and 
+double. It's subclasses must implement conversions to/from long.
+*/
+
+class IntegralType : public AtomicType {
+public:
+	IntegralType(unsigned int newSize):
+		AtomicType(newSize) {}
+	/*@Doc:
+	constructor.
+	*/
+
+	IntegralType(const IntegralType& old):
+		AtomicType(old) {}
+	/*@Doc:
+	copy constructor.
+	*/
+
+	IntegralType(const OId& id) throw (r_Error):
+		AtomicType(id) {}
+	/*@Doc:
+	*/
+
+	virtual ~IntegralType() {}
+	/*@Doc:
+	*/
+
+	virtual r_ULong* convertToCULong(const char*, r_ULong*) const;
+	virtual char* makeFromCULong(char*, const r_ULong*) const;
+
+	virtual double* convertToCDouble(const char*, double*) const; 
+	virtual char* makeFromCDouble(char*, const double*) const;
+
+protected:
+	IntegralType(const char* name, unsigned int newSize):
+		AtomicType(name, newSize) {}
+	/*@Doc:
+	*/
+
+};
+
+#include "integraltype.icc"
+
+#endif