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Viewing changes to drizzled/function/additive_op.cc

  • Committer: Brian Aker
  • Date: 2009-02-21 00:18:15 UTC
  • Revision ID: brian@tangent.org-20090221001815-x20e8h71e984lvs1
Completion (?) of uint conversion.

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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, Inc.
 
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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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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include "config.h"
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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 <drizzled/type/decimal.h>
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#include <algorithm>
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using namespace std;
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namespace drizzled
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{
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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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  decimals= cmax(args[0]->decimals, args[1]->decimals);
 
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  int max_int_part= cmax(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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  int precision= cmin(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= class_decimal_precision_to_length(precision, decimals,
 
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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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} /* namespace drizzled */