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00020 #include <config.h>
00021
00022 #include <drizzled/definitions.h>
00023 #include <drizzled/field.h>
00024 #include <drizzled/hybrid_type.h>
00025 #include <drizzled/hybrid_type_traits_decimal.h>
00026 #include <drizzled/item.h>
00027
00028 #include <algorithm>
00029
00030 using namespace std;
00031 namespace drizzled
00032 {
00033
00034
00035 static const Hybrid_type_traits_decimal decimal_traits_instance;
00036
00037
00038 Item_result Hybrid_type_traits_decimal::type() const { return DECIMAL_RESULT; }
00039
00040
00041 void
00042 Hybrid_type_traits_decimal::fix_length_and_dec(Item *item, Item *arg) const
00043 {
00044 item->decimals= arg->decimals;
00045 item->max_length= min(arg->max_length + DECIMAL_LONGLONG_DIGITS,
00046 (unsigned int)DECIMAL_MAX_STR_LENGTH);
00047 }
00048
00049
00050 void Hybrid_type_traits_decimal::set_zero(Hybrid_type *val) const
00051 {
00052 val->dec_buf[0].set_zero();
00053 val->used_dec_buf_no= 0;
00054 }
00055
00056
00057 void Hybrid_type_traits_decimal::add(Hybrid_type *val, Field *f) const
00058 {
00059 class_decimal_add(E_DEC_FATAL_ERROR,
00060 &val->dec_buf[val->used_dec_buf_no ^ 1],
00061 &val->dec_buf[val->used_dec_buf_no],
00062 f->val_decimal(&val->dec_buf[2]));
00063 val->used_dec_buf_no^= 1;
00064 }
00065
00066
00071 void Hybrid_type_traits_decimal::div(Hybrid_type *val, uint64_t u) const
00072 {
00073 int2_class_decimal(E_DEC_FATAL_ERROR, u, true, &val->dec_buf[2]);
00074
00075 class_decimal_div(E_DEC_FATAL_ERROR,
00076 &val->dec_buf[val->used_dec_buf_no ^ 1],
00077 &val->dec_buf[val->used_dec_buf_no],
00078 &val->dec_buf[2], 4);
00079 val->used_dec_buf_no^= 1;
00080 }
00081
00082
00083 int64_t
00084 Hybrid_type_traits_decimal::val_int(Hybrid_type *val, bool unsigned_flag) const
00085 {
00086 int64_t result;
00087 val->dec_buf[val->used_dec_buf_no].val_int32(E_DEC_FATAL_ERROR, unsigned_flag, &result);
00088
00089 return result;
00090 }
00091
00092
00093 double
00094 Hybrid_type_traits_decimal::val_real(Hybrid_type *val) const
00095 {
00096 class_decimal2double(E_DEC_FATAL_ERROR, &val->dec_buf[val->used_dec_buf_no],
00097 &val->real);
00098 return val->real;
00099 }
00100
00101
00102 type::Decimal *Hybrid_type_traits_decimal::val_decimal(Hybrid_type *val,
00103 type::Decimal *) const
00104 { return &val->dec_buf[val->used_dec_buf_no]; }
00105
00106
00107 String *
00108 Hybrid_type_traits_decimal::val_str(Hybrid_type *val, String *to,
00109 uint8_t decimals) const
00110 {
00111 class_decimal_round(E_DEC_FATAL_ERROR, &val->dec_buf[val->used_dec_buf_no],
00112 decimals, false, &val->dec_buf[2]);
00113 class_decimal2string(&val->dec_buf[2], 0, to);
00114 return to;
00115 }
00116
00117
00118 const Hybrid_type_traits_decimal *Hybrid_type_traits_decimal::instance()
00119 {
00120 return &decimal_traits_instance;
00121 }
00122
00123
00124 Hybrid_type_traits_decimal::Hybrid_type_traits_decimal()
00125 {}
00126
00127 }