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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/****************************************************************************
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* $Id: func_div.cpp 3921 2013-06-19 18:59:56Z bwilkinson $
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*
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*
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****************************************************************************/
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#include <cstdlib>
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#include <string>
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#include <sstream>
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#define __STDC_LIMIT_MACROS
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#include <stdint.h>
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using namespace std;
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#include "functor_real.h"
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#include "funchelpers.h"
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#include "functioncolumn.h"
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#include "rowgroup.h"
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using namespace execplan;
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#include "dataconvert.h"
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namespace funcexp
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{
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CalpontSystemCatalog::ColType Func_div::operationType( FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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return resultType;
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}
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int64_t Func_div::getIntVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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double val1 = parm[0]->data()->getDoubleVal(row, isNull);
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double val2 = parm[1]->data()->getDoubleVal(row, isNull);
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int64_t int_val2 = (int64_t)(val2 > 0 ? val2 + 0.5 : val2 - 0.5);
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if (int_val2 == 0)
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{
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isNull = true;
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return 0;
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}
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int64_t int_val1 = (int64_t)(val1 > 0 ? val1 + 0.5 : val1 - 0.5);
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// MCOL-176 If abs(int_val2) is small enough (like -1), then, this may cause overflow.
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// This kludge stops the crash.
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if (int_val1 == INT64_MIN)
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{
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--int_val1;
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}
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return int_val1 / int_val2;
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}
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uint64_t Func_div::getUintVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& op_ct)
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{
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uint64_t val1 = parm[0]->data()->getUintVal(row, isNull);
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uint64_t val2 = parm[1]->data()->getUintVal(row, isNull);
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if (val2 == 0)
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{
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isNull = true;
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return 0;
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}
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return val1 / val2;
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}
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double Func_div::getDoubleVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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execplan::CalpontSystemCatalog::ColType& ct)
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{
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return getIntVal(row, parm, isNull, ct);
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}
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string Func_div::getStrVal(rowgroup::Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType& ct)
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{
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return intToString(getIntVal(row, parm, isNull, ct));
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}
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} // namespace funcexp
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// vim:ts=4 sw=4:
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