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Viewing changes to drizzled/function/additive_op.cc

  • Committer: Monty Taylor
  • Date: 2009-10-06 19:37:52 UTC
  • mto: This revision was merged to the branch mainline in revision 1184.
  • Revision ID: mordred@inaugust.com-20091006193752-4dx2c8u35j4em79g
Removed more server_includes.h from headers.

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drizzled/function/additive_op.cc
 
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
 
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 
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 *
 
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 *  Copyright (C) 2008 Sun Microsystems
 
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 *
 
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 *  This program is free software; you can redistribute it and/or modify
 
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 *  it under the terms of the GNU General Public License as published by
 
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 *  the Free Software Foundation; version 2 of the License.
 
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 *
 
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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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 *
 
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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 St, Fifth Floor, Boston, MA  02110-1301  USA
 
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 */
 
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#include <drizzled/server_includes.h>
 
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#include CSTDINT_H
 
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#include <drizzled/function/additive_op.h>
 
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#include <algorithm>
 
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using namespace std;
 
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/**
 
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  Set precision of results for additive operations (+ and -)
 
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*/
 
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void Item_func_additive_op::result_precision()
 
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{
 
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  decimals= max(args[0]->decimals, args[1]->decimals);
 
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  int max_int_part= max(args[0]->decimal_precision() - args[0]->decimals,
 
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                        args[1]->decimal_precision() - args[1]->decimals);
 
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  int precision= min(max_int_part + 1 + decimals, DECIMAL_MAX_PRECISION);
 
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  /* Integer operations keep unsigned_flag if one of arguments is unsigned */
 
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  if (result_type() == INT_RESULT)
 
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    unsigned_flag= args[0]->unsigned_flag | args[1]->unsigned_flag;
 
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  else
 
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    unsigned_flag= args[0]->unsigned_flag & args[1]->unsigned_flag;
 
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  max_length= my_decimal_precision_to_length(precision, decimals,
 
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                                             unsigned_flag);
 
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}
 
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