FixedPointDecimal< MantissaType, ExponentType > Class Template Reference

Public Types
enum
typedef MantissaType	Mantissa
typedef ExponentType	Exponent

Public Member Functions
	FixedPointDecimal ()
	FixedPointDecimal (Mantissa mantissa)
Mantissa	mantissa () const
Exponent	exponent () const

Detailed Description

template<class MantissaType, class ExponentType>
class OnixS::CME::ConflatedUDP::FixedPointDecimal< MantissaType, ExponentType >

Represents real number with constant exponent.

CME Market Data Platform currently operates prices and scaling factors as real numbers with constant exponent. This class implements concept of fixed point decimal and lets to dramatically improve performance of book-related operations.

Definition at line 41 of file Decimal.h.

Member Typedef Documentation

Exponent

template<class MantissaType, class ExponentType>

typedef ExponentType Exponent

Aliases exponent component type.

Definition at line 51 of file Decimal.h.

Mantissa

template<class MantissaType, class ExponentType>

typedef MantissaType Mantissa

Aliases mantissa component type.

Definition at line 48 of file Decimal.h.

Member Enumeration Documentation

anonymous enum

template<class MantissaType, class ExponentType>

anonymous enum

A few traits.

Enumerator
Size	sizeof(Mantissa)	Size of class in bytes. Instantiations of given class are used while manipulating binary messages. Regular composites expose given characteristics so as this template class does.

Definition at line 54 of file Decimal.h.

Constructor & Destructor Documentation

FixedPointDecimal() [1/2]

template<class MantissaType, class ExponentType>

FixedPointDecimal ( )

inline

Default (zero) initialization.

Definition at line 66 of file Decimal.h.

FixedPointDecimal() [2/2]

template<class MantissaType, class ExponentType>

FixedPointDecimal ( Mantissa mantissa )

inlineexplicit

Explicitly initializes instance from its mantissa value.

Definition at line 73 of file Decimal.h.

Member Function Documentation

exponent()

template<class MantissaType, class ExponentType>

Exponent exponent ( ) const

inline

Returns exponent of given decimal.

Definition at line 86 of file Decimal.h.

mantissa()

template<class MantissaType, class ExponentType>

Mantissa mantissa ( ) const

inline

Returns mantissa of given decimal.

Definition at line 80 of file Decimal.h.