Decimal Class Reference

Decimal type for better precision. More...

Public Member Functions
	Decimal (DecimalMantissa mantissa=0, DecimalExponent exponent=0)
	Initializes instance from compound components.
	Decimal (Double value, size_t precision)
	Converts Double value to decimal. More...
	Decimal (const Decimal &other)
	Initializes as copy of given value.
DecimalMantissa	mantissa () const
	Returns mantissa part of decimal.
void	mantissa (DecimalMantissa)
	Updates mantissa part of decimal.
DecimalExponent	exponent () const
	Returns exponent part of decimal.
void	exponent (DecimalExponent)
	Updates exponent part of decimal.
bool	operator== (const Decimal &) const
	Compares two numbers.
bool	operator!= (const Decimal &) const
	Compares two numbers.
bool	operator< (const Decimal &) const
	Establishes order between two values.
bool	operator> (const Decimal &) const
	Establishes order between two values.
	operator Int32 () const
	Casts to whole integer number as regular floating point value is casted. More...
	operator UInt32 () const
	Casts to whole integer number as regular floating point value is casted. More...
	operator Int64 () const
	Casts to whole integer number as regular floating point value is casted. More...
	operator UInt64 () const
	Casts to whole integer number as regular floating point value is casted. More...
	operator Double () const
	Casts to whole floating point as regular value is casted to a smaller precision. More...
bool	toNumber (Int32 &) const
	Casts to whole integer number as regular floating point value is casted. More...
bool	toNumber (UInt32 &) const
	Casts to whole integer number as regular floating point value is casted. More...
bool	toNumber (Int64 &) const
	Casts to whole integer number as regular floating point value is casted. More...
bool	toNumber (UInt64 &) const
	Casts to whole integer number as regular floating point value is casted. More...
bool	toNumber (Double &) const
	Casts to double floating point number. More...
Double	toDoubleUnchecked () const
	Fast cast to double floating point number. More...
void	toString (std::string &) const
	Appends text presentation to given string.
std::string	toString () const
	Returns text presentation of decimal.
Decimal &	operator= (const Decimal &other)
	Reinitializes instance from another one.

Static Public Member Functions
static Decimal	fromDoubleUnchecked (Double value, size_t precision)
	Fast cast from double floating point number. More...
static bool	tryParse (const char *buffer, size_t bufferSize, Decimal &)
	Attempts to parse decimal value from its string/text presentation. More...
static Decimal	parse (const char *buffer, size_t bufferSize)
	Parses decimal from string presentation. More...

Detailed Description

Decimal type for better precision.

Constructor & Destructor Documentation

Decimal	(	Double	value,
		size_t	precision
	)

Converts Double value to decimal.

Parameters

value	double precision floating-point value.
precision	defines conversion precision.

Member Function Documentation

Decimal fromDoubleUnchecked ( Double  value, size_t  precision  )

inlinestatic

Fast cast from double floating point number.

Note

For the sake of performance no range checks are done. Result may be invalid if decimal cannot be represented as double value. Warning: result may be different (less precise) from Decimal(Double, size_t) result due to performance vs precison trade-off.

operator Double ( ) const

inline

Casts to whole floating point as regular value is casted to a smaller precision.

Exceptions

domain_error

exception on failure.

operator Int32 ( ) const

inline

Casts to whole integer number as regular floating point value is casted.

Exceptions

domain_error

exception on failure.

operator Int64 ( ) const

inline

Casts to whole integer number as regular floating point value is casted.

Exceptions

domain_error

exception on failure.

operator UInt32 ( ) const

inline

Casts to whole integer number as regular floating point value is casted.

Exceptions

domain_error

exception on failure.

operator UInt64 ( ) const

inline

Casts to whole integer number as regular floating point value is casted.

Exceptions

domain_error

exception on failure.

static Decimal parse ( const char *  buffer, size_t  bufferSize  )

static

Parses decimal from string presentation.

Exceptions

std::exception

on failure.

Double toDoubleUnchecked ( ) const

inline

Fast cast to double floating point number.

Note

For the sake of performance no range checks are done. Result may be invalid if decimal cannot be represented as double value. Warning: result may be different (less precise) from toNumber(Double&) result due to performance vs precison trade-off.

bool toNumber

(

Int32 &

)

const

Casts to whole integer number as regular floating point value is casted.

Returns

false if conversion fails.

bool toNumber

(

UInt32 &

)

const

Casts to whole integer number as regular floating point value is casted.

Returns

false if conversion fails.

bool toNumber

(

Int64 &

)

const

Casts to whole integer number as regular floating point value is casted.

Returns

false if conversion fails.

bool toNumber

(

UInt64 &

)

const

Casts to whole integer number as regular floating point value is casted.

Returns

false if conversion fails.

bool toNumber

(

Double &

)

const

Casts to double floating point number.

Returns

false if conversion fails.

static bool tryParse ( const char *  buffer, size_t  bufferSize, Decimal &    )

static

Attempts to parse decimal value from its string/text presentation.

Returns

false on parsing failure.