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00020 #include <config.h>
00021
00022 #include <drizzled/field.h>
00023 #include <drizzled/hybrid_type.h>
00024 #include <drizzled/hybrid_type_traits.h>
00025 #include <drizzled/item.h>
00026
00027 #include <math.h>
00028
00029 namespace drizzled
00030 {
00031
00032 static const Hybrid_type_traits real_traits_instance;
00033
00034 Item_result Hybrid_type_traits::type() const
00035 {
00036 return REAL_RESULT;
00037 }
00038
00039
00040 void Hybrid_type_traits::fix_length_and_dec(Item *item, Item *arg) const
00041 {
00042 item->decimals= NOT_FIXED_DEC;
00043 item->max_length= item->float_length(arg->decimals);
00044 }
00045
00046
00047
00048 void Hybrid_type_traits::set_zero(Hybrid_type *val) const
00049 {
00050 val->real= 0.0;
00051 }
00052
00053
00054 void Hybrid_type_traits::add(Hybrid_type *val, Field *f) const
00055 {
00056 val->real+= f->val_real();
00057 }
00058
00059
00060 void Hybrid_type_traits::div(Hybrid_type *val, uint64_t u) const
00061 {
00062 val->real/= uint64_t2double(u);
00063 }
00064
00065
00066 int64_t Hybrid_type_traits::val_int(Hybrid_type *val,
00067 bool) const
00068 {
00069 return (int64_t) rint(val->real);
00070 }
00071
00072
00073 double Hybrid_type_traits::val_real(Hybrid_type *val) const
00074 {
00075 return val->real;
00076 }
00077
00078
00079 type::Decimal *
00080 Hybrid_type_traits::val_decimal(Hybrid_type *val, type::Decimal *) const
00081 {
00082 double2_class_decimal(E_DEC_FATAL_ERROR, val->real, val->dec_buf);
00083 return val->dec_buf;
00084 }
00085
00086
00087 String *
00088 Hybrid_type_traits::val_str(Hybrid_type *val, String *to,
00089 uint8_t decimals) const
00090 {
00091 to->set_real(val->real, decimals, &my_charset_bin);
00092 return to;
00093 }
00094
00095
00096 const Hybrid_type_traits *Hybrid_type_traits::instance()
00097 {
00098 return &real_traits_instance;
00099 }
00100
00101
00102 Hybrid_type_traits::Hybrid_type_traits()
00103 {}
00104
00105 Hybrid_type_traits::~Hybrid_type_traits()
00106 {}
00107
00108 }