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Viewing changes to drizzled/function/math/divide.cc

  • Committer: Brian Aker
  • Date: 2009-06-03 19:30:45 UTC
  • mfrom: (1046.1.6 merge)
  • Revision ID: brian@gaz-20090603193045-4xgeczyfixh07beg
Merge for Brian

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drizzled/function/math/divide.cc
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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/math/divide.h>
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#include <drizzled/session.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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double Item_func_div::real_op()
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{
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  assert(fixed == 1);
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void Item_func_div::result_precision()
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{
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  uint32_t precision= min(args[0]->decimal_precision() + prec_increment,
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                          (unsigned int)DECIMAL_MAX_PRECISION);
 
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  uint32_t precision=cmin(args[0]->decimal_precision() + prec_increment,
 
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                     (unsigned int)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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  decimals= min(args[0]->decimals + prec_increment, (unsigned int)DECIMAL_MAX_SCALE);
 
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  decimals= cmin(args[0]->decimals + prec_increment, (unsigned int)DECIMAL_MAX_SCALE);
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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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void Item_func_div::fix_length_and_dec()
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{
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  prec_increment= session->variables.div_precincrement;
 
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  prec_increment= current_session->variables.div_precincrement;
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  Item_num_op::fix_length_and_dec();
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  switch(hybrid_type)
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  {
 
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  switch(hybrid_type) {
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  case REAL_RESULT:
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  {
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    decimals= max(args[0]->decimals,args[1]->decimals)+prec_increment;
 
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    decimals=cmax(args[0]->decimals,args[1]->decimals)+prec_increment;
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    set_if_smaller(decimals, NOT_FIXED_DEC);
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    max_length= args[0]->max_length - args[0]->decimals + decimals;
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    uint32_t tmp= float_length(decimals);
 
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    max_length=args[0]->max_length - args[0]->decimals + decimals;
 
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    uint32_t tmp=float_length(decimals);
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    set_if_smaller(max_length,tmp);
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    break;
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  }
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  return;
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}
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} /* namespace drizzled */