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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 <math.h>
#include <drizzled/function/numhybrid.h>
namespace drizzled
{
void Item_func_numhybrid::fix_num_length_and_dec()
{}
void Item_func_numhybrid::fix_length_and_dec()
{
fix_num_length_and_dec();
find_num_type();
}
String *Item_func_numhybrid::val_str(String *str)
{
assert(fixed == 1);
switch (hybrid_type) {
case DECIMAL_RESULT:
{
type::Decimal decimal_value, *val;
if (!(val= decimal_op(&decimal_value)))
return 0; // null is set
class_decimal_round(E_DEC_FATAL_ERROR, val, decimals, false, val);
class_decimal2string(val, 0, str);
break;
}
case INT_RESULT:
{
int64_t nr= int_op();
if (null_value)
return 0;
str->set_int(nr, unsigned_flag, &my_charset_bin);
break;
}
case REAL_RESULT:
{
double nr= real_op();
if (null_value)
return 0;
str->set_real(nr,decimals,&my_charset_bin);
break;
}
case STRING_RESULT:
return str_op(&str_value);
case ROW_RESULT:
assert(0);
}
return str;
}
double Item_func_numhybrid::val_real()
{
assert(fixed == 1);
switch (hybrid_type) {
case DECIMAL_RESULT:
{
type::Decimal decimal_value, *val;
double result;
if (!(val= decimal_op(&decimal_value)))
return 0.0; // null is set
class_decimal2double(E_DEC_FATAL_ERROR, val, &result);
return result;
}
case INT_RESULT:
{
int64_t result= int_op();
return unsigned_flag ? (double) ((uint64_t) result) : (double) result;
}
case REAL_RESULT:
return real_op();
case STRING_RESULT:
{
char *end_not_used;
int err_not_used;
String *res= str_op(&str_value);
return (res ? my_strntod(res->charset(), (char*) res->ptr(), res->length(),
&end_not_used, &err_not_used) : 0.0);
}
case ROW_RESULT:
assert(0);
}
return 0.0;
}
int64_t Item_func_numhybrid::val_int()
{
assert(fixed == 1);
switch (hybrid_type) {
case DECIMAL_RESULT:
{
type::Decimal decimal_value, *val;
if (!(val= decimal_op(&decimal_value)))
return 0; // null is set
int64_t result;
val->val_int32(E_DEC_FATAL_ERROR, unsigned_flag, &result);
return result;
}
case INT_RESULT:
return int_op();
case REAL_RESULT:
return (int64_t) rint(real_op());
case STRING_RESULT:
{
int err_not_used;
String *res;
if (!(res= str_op(&str_value)))
return 0;
char *end= (char*) res->ptr() + res->length();
const CHARSET_INFO * const cs= str_value.charset();
return (*(cs->cset->strtoll10))(cs, res->ptr(), &end, &err_not_used);
}
case ROW_RESULT:
assert(0);
}
return 0;
}
type::Decimal *Item_func_numhybrid::val_decimal(type::Decimal *decimal_value)
{
type::Decimal *val= decimal_value;
assert(fixed == 1);
switch (hybrid_type) {
case DECIMAL_RESULT:
val= decimal_op(decimal_value);
break;
case INT_RESULT:
{
int64_t result= int_op();
int2_class_decimal(E_DEC_FATAL_ERROR, result, unsigned_flag, decimal_value);
break;
}
case REAL_RESULT:
{
double result= (double)real_op();
double2_class_decimal(E_DEC_FATAL_ERROR, result, decimal_value);
break;
}
case STRING_RESULT:
{
String *res;
if (!(res= str_op(&str_value)))
return NULL;
decimal_value->store(E_DEC_FATAL_ERROR, (char*) res->ptr(),
res->length(), res->charset());
break;
}
case ROW_RESULT:
assert(0);
}
return val;
}
} /* namespace drizzled */
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