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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
*
* 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
*/
#ifndef DRIZZLED_FUNCTION_MATH_RAND_H
#define DRIZZLED_FUNCTION_MATH_RAND_H
#include <drizzled/function/func.h>
#include <drizzled/function/math/real.h>
class Item_func_rand :public Item_real_func
{
uint64_t seed1;
uint64_t seed2;
uint64_t max_value;
double max_value_dbl;
void _seed_random_int(uint64_t new_seed1, uint64_t new_seed2);
public:
Item_func_rand(Item *a) :Item_real_func(a) {}
Item_func_rand() :Item_real_func() {}
double val_real();
const char *func_name() const { return "rand"; }
bool const_item() const { return 0; }
void update_used_tables();
bool fix_fields(Session *session, Item **ref);
private:
void seed_random (Item * val);
};
#endif /* DRIZZLED_FUNCTION_MATH_RAND_H */
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