the begginning

utils/funcexp/func_div.cpp

@@ -0,0 +1,98 @@
+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program 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; version 2 of
+   the License.
+
+   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., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/****************************************************************************
+* $Id: func_div.cpp 3921 2013-06-19 18:59:56Z bwilkinson $
+*
+*
+****************************************************************************/
+
+#include <cstdlib>
+#include <string>
+#include <sstream>
+using namespace std;
+
+#include "functor_real.h"
+#include "funchelpers.h"
+#include "functioncolumn.h"
+#include "rowgroup.h"
+using namespace execplan;
+
+#include "dataconvert.h"
+
+namespace funcexp
+{
+
+CalpontSystemCatalog::ColType Func_div::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
+{
+	return resultType;
+}
+
+int64_t Func_div::getIntVal(rowgroup::Row& row,
+						FunctionParm& parm,
+						bool& isNull,
+						CalpontSystemCatalog::ColType& op_ct)
+{
+	double val1 = parm[0]->data()->getDoubleVal(row, isNull);
+	double val2 = parm[1]->data()->getDoubleVal(row, isNull);
+	int64_t int_val2 = (int64_t)(val2 > 0 ? val2 + 0.5 : val2 - 0.5);
+	if (int_val2 == 0)
+	{
+		isNull = true;
+		return 0;
+	}
+	int64_t int_val1 = (int64_t)(val1 > 0 ? val1 + 0.5 : val1 - 0.5);
+	return int_val1 / int_val2;
+}
+
+
+uint64_t Func_div::getUintVal(rowgroup::Row& row,
+						      FunctionParm& parm,
+						      bool& isNull,
+						      CalpontSystemCatalog::ColType& op_ct)
+{
+	uint64_t val1 = parm[0]->data()->getUintVal(row, isNull);
+	uint64_t val2 = parm[1]->data()->getUintVal(row, isNull);
+	if (val2 == 0)
+	{
+		isNull = true;
+		return 0;
+	}
+	return val1 / val2;
+}
+
+
+double Func_div::getDoubleVal(rowgroup::Row& row,
+						FunctionParm& parm,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& ct)
+{
+	return getIntVal(row, parm, isNull, ct);
+}
+
+
+string Func_div::getStrVal(rowgroup::Row& row,
+							FunctionParm& parm,
+							bool& isNull,
+							CalpontSystemCatalog::ColType& ct)
+{
+	return intToString(getIntVal(row, parm, isNull, ct));
+}
+
+
+} // namespace funcexp
+// vim:ts=4 sw=4: