FixedPointDecimal< MantissaType, ExponentType > Class Template Reference

Public Types
enum
typedef MantissaType	Mantissa
typedef ExponentType	Exponent

Public Member Functions
	FixedPointDecimal () ONIXS_FMXUST_BIMP_NOTHROW
	FixedPointDecimal (Mantissa mantissa) ONIXS_FMXUST_BIMP_NOTHROW
	FixedPointDecimal (const FixedPointDecimal &other) ONIXS_FMXUST_BIMP_NOTHROW
Mantissa	mantissa () const ONIXS_FMXUST_BIMP_NOTHROW
Exponent	exponent () const ONIXS_FMXUST_BIMP_NOTHROW
FixedPointDecimal &	operator= (const FixedPointDecimal &other) ONIXS_FMXUST_BIMP_NOTHROW

Detailed Description

template<class MantissaType, class ExponentType>
class OnixS::FmxUST::MarketData::Bimp::FixedPointDecimal< MantissaType, ExponentType >

Represents real number with constant exponent.

BOE 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 45 of file Decimal.h.

Member Typedef Documentation

Exponent

template<class MantissaType, class ExponentType>

typedef ExponentType Exponent

Aliases exponent component type.

Definition at line 55 of file Decimal.h.

Mantissa

template<class MantissaType, class ExponentType>

typedef MantissaType Mantissa

Aliases mantissa component type.

Definition at line 52 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 58 of file Decimal.h.

Constructor & Destructor Documentation

FixedPointDecimal() [1/3]

template<class MantissaType, class ExponentType>

FixedPointDecimal ( )

inline

Default (zero) initialization.

Definition at line 70 of file Decimal.h.

FixedPointDecimal() [2/3]

template<class MantissaType, class ExponentType>

FixedPointDecimal ( Mantissa mantissa )

inlineexplicit

Explicitly initializes instance from its mantissa value.

Definition at line 78 of file Decimal.h.

FixedPointDecimal() [3/3]

template<class MantissaType, class ExponentType>

FixedPointDecimal ( const FixedPointDecimal< MantissaType, ExponentType > & other )

inline

Initializes instance as copy of the other one.

Definition at line 85 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 99 of file Decimal.h.

mantissa()

template<class MantissaType, class ExponentType>

Mantissa mantissa ( ) const

inline

Returns mantissa of given decimal.

Definition at line 92 of file Decimal.h.

operator=()

template<class MantissaType, class ExponentType>

FixedPointDecimal & operator= ( const FixedPointDecimal< MantissaType, ExponentType > & other )

inline

Re-initializes instance as copy of the other one.

Definition at line 106 of file Decimal.h.