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drizzled/function/math/minus.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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 *  Copyright (C) 2008 Sun Microsystems, Inc.
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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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  See Item_func_plus::decimal_op for comments.
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*/
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my_decimal *Item_func_minus::decimal_op(my_decimal *decimal_value)
 
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type::Decimal *Item_func_minus::decimal_op(type::Decimal *decimal_value)
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{
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  my_decimal value1, *val1;
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  my_decimal value2, *val2=
 
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  type::Decimal value1, *val1;
 
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  type::Decimal value2, *val2=
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  val1= args[0]->val_decimal(&value1);
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  if ((null_value= args[0]->null_value))
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    return 0;
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  val2= args[1]->val_decimal(&value2);
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  if (!(null_value= (args[1]->null_value ||
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                     (my_decimal_sub(E_DEC_FATAL_ERROR, decimal_value, val1,
 
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                     (class_decimal_sub(E_DEC_FATAL_ERROR, decimal_value, val1,
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                                     val2) > 3))))
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    return decimal_value;
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  return 0;