Engine::Decimal Class Reference

Incapsulates float type. More...

#include <B2BITS_Decimal.h>

List of all members.

Public Member Functions
	Decimal ()
	Default contructor.
	Decimal (System::i64 m, System::i32 e)
	Contructor Constructs object from mantissa and exponent.
	Decimal (double v)
	Contructor Constructs object from double.
	Decimal (System::i64 x)
	Contructor Constructs object from 64-bit integer.
bool	equals (const Decimal &rv) const
	Compares two Decimals.
System::i32	getExponent () const
	Returns exponent part of the value.
System::i64	getMantissa () const
	Returns mantissa part of the value.
bool	operator!= (const Decimal &rv) const
	Compares two Decimals.
bool	operator== (const Decimal &rv) const
	Compares two Decimals.
double	toDouble () const
	Converts stored value to double.
float	toFloat () const
	Converts stored value to float.
char *	toString (char *buf) const
	Converts decimal to FIX string.
char *	toString (char *buf, size_t size) const
	Converts decimal to FIX string.
Static Public Member Functions
static Decimal	fromString (AsciiString str)
	Converts string to Decimal.
static Decimal	fromString (WideString str)
	Converts wide-string to Decimal.
Static Public Attributes
static unsigned int const	ValueSize = 2 + 63 + sizeof("18446744073709551616")
	Maximum buffer size required to store value.

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Detailed Description

Incapsulates float type.

Definition at line 60 of file B2BITS_Decimal.h.

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Constructor & Destructor Documentation

Engine::Decimal::Decimal

(

)

Default contructor.

Engine::Decimal::Decimal	(	System::i64	m,
		System::i32	e
	)

Contructor Constructs object from mantissa and exponent.

Parameters:

m	Mantissa
e	Exponent

Engine::Decimal::Decimal

(

double

v )

Contructor Constructs object from double.

Parameters:

v	Value of the double type
precision	Precision

Engine::Decimal::Decimal

(

System::i64

x )

Contructor Constructs object from 64-bit integer.

Parameters:

x	Value of the i64 type

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Member Function Documentation

bool Engine::Decimal::equals

(

const Decimal &

rv )

const

Compares two Decimals.

Parameters:

rv	Value to compare with.

Returns:

true if equals; false otherwise

static Decimal Engine::Decimal::fromString

(

AsciiString

str )

[static]

Converts string to Decimal.

static Decimal Engine::Decimal::fromString

(

WideString

str )

[static]

Converts wide-string to Decimal.

System::i32 Engine::Decimal::getExponent

(

)

const [inline]

Returns exponent part of the value.

Returns:

exponent part of the value

Definition at line 77 of file B2BITS_Decimal.h.

System::i64 Engine::Decimal::getMantissa

(

)

const [inline]

Returns mantissa part of the value.

Returns:

mantissa part of the value

Definition at line 73 of file B2BITS_Decimal.h.

bool Engine::Decimal::operator!=

(

const Decimal &

rv )

const

Compares two Decimals.

Parameters:

rv	Value to compare with.

Returns:

false if equals; true otherwise

bool Engine::Decimal::operator==

(

const Decimal &

rv )

const

Compares two Decimals.

Parameters:

rv	Value to compare with.

Returns:

true if equals; false otherwise

double Engine::Decimal::toDouble

(

)

const

Converts stored value to double.

Returns:

double representation of the value

float Engine::Decimal::toFloat

(

)

const

Converts stored value to float.

Returns:

float representation of the value

char* Engine::Decimal::toString

(

char *

buf )

const

Converts decimal to FIX string.

Parameters:

[out]

buf

Buffer to convert to. Should be enough to store Engine::Decimal::ValueSize bytes.

Returns:

Pointer to the first character of the value

Referenced by Engine::PreparedMessage::set().

char* Engine::Decimal::toString	(	char *	buf,
		size_t	size
	)		const

Converts decimal to FIX string.

If result string is less than passed buffer, remain chars will be filled with zeros according to FIX protocol.

Parameters:

[out]	buf	Buffer to convert to.
[in]	size	Size of the buffer.

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Member Data Documentation

unsigned int const Engine::Decimal::ValueSize = 2 + 63 + sizeof("18446744073709551616") [static]

Maximum buffer size required to store value.

Definition at line 69 of file B2BITS_Decimal.h.