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floor.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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*
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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 <config.h>
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#include <math.h>
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#include "floor.h"
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#include <drizzled/type/decimal.h>
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namespace
drizzled
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{
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int64_t
Item_func_floor::int_op
()
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{
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int64_t result;
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switch
(args[0]->result_type()) {
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case
INT_RESULT:
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result= args[0]->
val_int
();
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null_value
= args[0]->
null_value
;
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break
;
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case
DECIMAL_RESULT:
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{
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type::Decimal
dec_buf, *dec;
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if
((dec=
Item_func_floor::decimal_op
(&dec_buf)))
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dec->val_int32(E_DEC_FATAL_ERROR, unsigned_flag, &result);
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else
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result= 0;
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break
;
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}
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default
:
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result= (int64_t)
Item_func_floor::real_op
();
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};
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return
result;
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}
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double
Item_func_floor::real_op
()
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{
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/*
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the volatile's for BUG #3051 to calm optimizer down (because of gcc's
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bug)
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*/
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volatile
double
value= args[0]->
val_real
();
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null_value
= args[0]->
null_value
;
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return
floor(value);
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}
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type::Decimal
*
Item_func_floor::decimal_op
(
type::Decimal
*decimal_value)
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{
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type::Decimal
val, *value= args[0]->
val_decimal
(&val);
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if
(!(
null_value
= (args[0]->
null_value
||
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class_decimal_floor(E_DEC_FATAL_ERROR, value,
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decimal_value) > 1)))
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return
decimal_value;
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return
0;
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}
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}
/* namespace drizzled */
plugin
math_functions
floor.cc
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