00001 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*- 00002 * vim:expandtab:shiftwidth=2:tabstop=2:smarttab: 00003 * 00004 * Copyright (C) 2008 Sun Microsystems, Inc. 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; version 2 of the License. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with this program; if not, write to the Free Software 00017 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00018 */ 00019 00020 #include <config.h> 00021 00022 #include <drizzled/function/math/plus.h> 00023 00024 namespace drizzled 00025 { 00026 00027 double Item_func_plus::real_op() 00028 { 00029 double value= args[0]->val_real() + args[1]->val_real(); 00030 if ((null_value=args[0]->null_value || args[1]->null_value)) 00031 return 0.0; 00032 return fix_result(value); 00033 } 00034 00035 00036 int64_t Item_func_plus::int_op() 00037 { 00038 int64_t value=args[0]->val_int()+args[1]->val_int(); 00039 if ((null_value=args[0]->null_value || args[1]->null_value)) 00040 return 0; 00041 return value; 00042 } 00043 00044 00056 type::Decimal *Item_func_plus::decimal_op(type::Decimal *decimal_value) 00057 { 00058 type::Decimal value1, *val1; 00059 type::Decimal value2, *val2; 00060 val1= args[0]->val_decimal(&value1); 00061 if ((null_value= args[0]->null_value)) 00062 return 0; 00063 val2= args[1]->val_decimal(&value2); 00064 if (!(null_value= (args[1]->null_value || 00065 (class_decimal_add(E_DEC_FATAL_ERROR, decimal_value, val1, 00066 val2) > 3)))) 00067 return decimal_value; 00068 return 0; 00069 } 00070 00071 } /* namespace drizzled */