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 #include <math.h> 00022 #include "ceiling.h" 00023 #include <drizzled/type/decimal.h> 00024 00025 namespace drizzled 00026 { 00027 00028 int64_t Item_func_ceiling::int_op() 00029 { 00030 int64_t result; 00031 switch (args[0]->result_type()) { 00032 case INT_RESULT: 00033 result= args[0]->val_int(); 00034 null_value= args[0]->null_value; 00035 break; 00036 case DECIMAL_RESULT: 00037 { 00038 type::Decimal dec_buf, *dec; 00039 if ((dec= Item_func_ceiling::decimal_op(&dec_buf))) 00040 dec->val_int32(E_DEC_FATAL_ERROR, unsigned_flag, &result); 00041 else 00042 result= 0; 00043 break; 00044 } 00045 default: 00046 result= (int64_t)Item_func_ceiling::real_op(); 00047 }; 00048 return result; 00049 } 00050 00051 double Item_func_ceiling::real_op() 00052 { 00053 /* 00054 the volatile's for BUG #3051 to calm optimizer down (because of gcc's 00055 bug) 00056 */ 00057 volatile double value= args[0]->val_real(); 00058 null_value= args[0]->null_value; 00059 return ceil(value); 00060 } 00061 00062 type::Decimal *Item_func_ceiling::decimal_op(type::Decimal *decimal_value) 00063 { 00064 type::Decimal val, *value= args[0]->val_decimal(&val); 00065 if (!(null_value= (args[0]->null_value || 00066 class_decimal_ceiling(E_DEC_FATAL_ERROR, value, 00067 decimal_value) > 1))) 00068 return decimal_value; 00069 return 0; 00070 } 00071 00072 } /* namespace drizzled */