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neg.h
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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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*
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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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#pragma once
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#include <drizzled/function/func.h>
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#include <drizzled/function/num1.h>
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namespace
drizzled
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{
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class
Item_func_neg
:
public
Item_func_num1
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{
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bool
_is_negative;
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public
:
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Item_func_neg
(
Item
*a) :
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Item_func_num1
(a),
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_is_negative(
true
)
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{}
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double
real_op
();
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int64_t
int_op
();
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type::Decimal
*
decimal_op
(
type::Decimal
*);
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const
char
*func_name()
const
{
return
"-"
; }
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enum
Functype functype()
const
{
return
NEG_FUNC; }
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void
fix_length_and_dec();
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void
fix_num_length_and_dec();
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uint32_t decimal_precision()
const
{
return
args[0]->decimal_precision(); }
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bool
negative()
const
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{
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return
_is_negative;
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}
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};
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}
/* namespace drizzled */
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drizzled
function
math
neg.h
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