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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <drizzled/function/bit/functions.h>
namespace drizzled
{
namespace function
{
namespace bit
{
int64_t ShiftLeft::val_int()
{
assert(fixed == 1);
uint32_t shift;
uint64_t res= ((uint64_t) args[0]->val_int() <<
(shift=(uint) args[1]->val_int()));
if (args[0]->null_value || args[1]->null_value)
{
null_value=1;
return 0;
}
null_value=0;
return (shift < sizeof(int64_t)*8 ? (int64_t) res : 0LL);
}
int64_t ShiftRight::val_int()
{
assert(fixed == 1);
uint32_t shift;
uint64_t res= (uint64_t) args[0]->val_int() >>
(shift=(uint) args[1]->val_int());
if (args[0]->null_value || args[1]->null_value)
{
null_value=1;
return 0;
}
null_value=0;
return (shift < sizeof(int64_t)*8 ? (int64_t) res : 0LL);
}
int64_t Neg::val_int()
{
assert(fixed == 1);
uint64_t res= (uint64_t) args[0]->val_int();
if ((null_value=args[0]->null_value))
return 0;
return ~res;
}
int64_t Xor::val_int()
{
assert(fixed == 1);
uint64_t arg1= (uint64_t) args[0]->val_int();
uint64_t arg2= (uint64_t) args[1]->val_int();
if ((null_value= (args[0]->null_value || args[1]->null_value)))
return 0;
return (int64_t) (arg1 ^ arg2);
}
int64_t Or::val_int()
{
assert(fixed == 1);
uint64_t arg1= (uint64_t) args[0]->val_int();
if (args[0]->null_value)
{
null_value=1; /* purecov: inspected */
return 0; /* purecov: inspected */
}
uint64_t arg2= (uint64_t) args[1]->val_int();
if (args[1]->null_value)
{
null_value=1;
return 0;
}
null_value=0;
return (int64_t) (arg1 | arg2);
}
int64_t And::val_int()
{
assert(fixed == 1);
uint64_t arg1= (uint64_t) args[0]->val_int();
if (args[0]->null_value)
{
null_value=1; /* purecov: inspected */
return 0; /* purecov: inspected */
}
uint64_t arg2= (uint64_t) args[1]->val_int();
if (args[1]->null_value)
{
null_value=1; /* purecov: inspected */
return 0; /* purecov: inspected */
}
null_value=0;
return (int64_t) (arg1 & arg2);
}
} /* namespace bit */
} /* namespace function */
} // namespace drizzled
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