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look::LookFloat Class Reference

Class representing a floating point value. More...

#include <lkfloat.h>

Inheritance diagram for look::LookFloat::

List of all members.

Public Methods
	LookFloat (double theValue=0.0)
	Constructor.
	~LookFloat (void)
	Destructor.
	LookFloat (const LookFloat &theOther)
	Copy constructor.
LookFloat&	operator= (const LookFloat &theOther)
	Assignment.
LookTypeBase*	GetNewCopy (void) const
	Get a new copy. More...
long	GetTypeID (void) const
	Get Type ID. More...
	operator double (void) const
	Cast to double.
bool	Set (const LookString &theString)
	Set from a string. More...
LookString	GetString (int aPrecision) const
	Convert to a string. More...
LookString	GetStrippedString (int aPrecision) const
	Convert to a string, no trailing 0 or . More...
LookFloat&	operator+= (const LookFloat &)
	Addition.
LookFloat&	operator-= (const LookFloat &)
	Subtraction.
LookFloat	operator+ (const LookFloat &) const
	Addition.
LookFloat	operator- (const LookFloat &) const
	Subtraction.
long	GetRoundedInteger (void) const
	Get value rounded to nearest long. More...
bool	LessEqual (const LookFloat &theOtherFloat, int thePrecision) const
	Less than or equal within a precision. More...
bool	LessThan (const LookFloat &theOtherFloat, int thePrecision) const
	Less than within a precision. More...
bool	IsEqual (const LookFloat &theOtherFloat, int thePrecision) const
	Equal within a precision. More...
bool	IsZero (int thePrecision) const
	Is zero within a precision. More...
Protected Attributes
double	itsValue
	Its value.

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Detailed Description

Class representing a floating point value.

It has some rounding abilities. Internally it uses a double.

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Member Function Documentation

LookTypeBase * look::LookFloat::GetNewCopy ( void ) const [virtual]

Get a new copy. Virtual copy constructor, aka clone. Returns: A new copy of this. (You are responsible for deleting it). Reimplemented from look::LookTypeBase.

long look::LookFloat::GetRoundedInteger ( void ) const

Get value rounded to nearest long. (See LookMoney for a short discussion on adding very small numbers to fix rounding at the 0.5 mark - you will have to do this yourself) Returns: Nearest long

LookString look::LookFloat::GetString ( int aPrecision ) const

Convert to a string. The precision is the number of decimal places to include. It can be negative. The value is rounded to the nearest value. Trailing zeros are included. (See LookMoney for a short discussion on adding very small numbers to fix rounding at the 0.5 mark - you will have to do this yourself) Eg 12345.67 4 gives 12345.6700 1 gives 12345.7 0 gives 12346 -2 gives 12300 Parameters: aPrecision   The precision. Returns: The string

LookString look::LookFloat::GetStrippedString ( int aPrecision ) const

Convert to a string, no trailing 0 or . The precision is the number of decimal places to include. It can be negative. The value is rounded to the nearest value. Trailing zeros and decimal points are not included. Eg 12345.98 4 gives 12345.98 1 gives 12346 0 gives 12346 -2 gives 12300 Parameters: aPrecision   The precision. Returns: The string

long look::LookFloat::GetTypeID ( void ) const [virtual]

Get Type ID. Pseudo-rtti, or isA. Returns: LookFloatID Reimplemented from look::LookTypeBase.

bool look::LookFloat::IsEqual ( const LookFloat & theOtherFloat, int thePrecision ) const

Equal within a precision. See LessEqual()

bool look::LookFloat::IsZero ( int thePrecision ) const

Is zero within a precision. Like Equal(), except theOther is 0. Eg 0.0001 is zero for precision <= 3. Parameters: thePrecision   Precision Returns: true if it is zero

bool look::LookFloat::LessEqual ( const LookFloat & theOtherFloat, int thePrecision ) const

Less than or equal within a precision. Comparison ops with floating points sometimes don't work very well, due to precision issues. This is an attempt to get round this. Eg my value 123.4567, other 123.4566 me.LessEqual( other, 4 ) = false. me.LessEqual( other, 3 ) = true. Parameters: theOtherFloat   The other float to compare with thePrecision   The precision with which to compare Returns: Obvious

bool look::LookFloat::LessThan ( const LookFloat & theOtherFloat, int thePrecision ) const

Less than within a precision. See LessEqual()

bool look::LookFloat::Set ( const LookString & theString )

Set from a string. The string must be in the form xxxx, -xxxx, -xxx.xx or xxx.xx. Ie minus at front if present, only one decimal point. If any other characters are present, false will be returned, but its value will still be set to what it would have been if all the invalid characters weren't present. Parameters: theString   The string to convert Returns: true for success, false otherwise

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The documentation for this class was generated from the following files:

• lkfloat.h
• lkfloat.cpp

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