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TFloatFixPt Class Reference

class TFloatFixPt

Implementation of a real number using 16.16 bits.

Gfx2D.lib
Since
1.0
Public Member Functions
TFloatFixPt ()
TFloatFixPt ( TInt )
TFloatFixPt ( TInt32 )
TFloatFixPt ( TInt , TBool )
TFloatFixPt ( TReal32 )
TFloatFixPt (const TFloatFixPt &)
TFloatFixPt Abs ( TFloatFixPt &)
TFloatFixPt ConvertString (const TDesC &)
TInt ConvertString (const TDesC &, TFloatFixPt &)
TInt32 FixedSqrtGeneral ( TInt32 , TUint32 )
TInt32 FracAsInt ()
void GetString ( TDes &)
TInt32 RawData ()
TInt32 Round ()
TFloatFixPt Sqrt ( TFloatFixPt )
operator TInt ()
operator TInt32 ()
operator TReal32 ()
TInt operator!= (const TFloatFixPt &)
TFloatFixPt operator* (const TFloatFixPt &)
TFloatFixPt & operator*= (const TFloatFixPt &)
TFloatFixPt operator+ (const TFloatFixPt &)
TFloatFixPt & operator+= (const TFloatFixPt &)
TFloatFixPt operator- (const TFloatFixPt &)
TFloatFixPt & operator-= (const TFloatFixPt &)
TFloatFixPt operator/ (const TFloatFixPt &)
TFloatFixPt & operator/= (const TFloatFixPt &)
TInt operator< (const TFloatFixPt &)
TFloatFixPt operator<< (const TInt )
TInt operator<= (const TFloatFixPt &)
TFloatFixPt & operator= ( TInt32 )
TFloatFixPt & operator= ( TInt )
TFloatFixPt & operator= ( TReal32 )
TInt operator== (const TFloatFixPt &)
TInt operator> (const TFloatFixPt &)
TInt operator>= (const TFloatFixPt &)
TFloatFixPt operator>> (const TInt )
Private Member Functions
void GfxMultiplyAsm ( TInt )
Public Attributes
TInt iValue

Constructor & Destructor Documentation

TFloatFixPt()

TFloatFixPt ( ) [inline]

Construct a TFixPt. The default value is 0.0.

Since
1.0

TFloatFixPt(TInt)

TFloatFixPt ( TInt aVal ) [inline]

Construct a TFixPt from the given integer value.

Since
1.0

Parameters

TInt aVal : integer value

TFloatFixPt(TInt32)

TFloatFixPt ( TInt32 aVal ) [inline]

Construct a TFixPt from the given integer value.

Since
1.0

Parameters

TInt32 aVal : integer value

TFloatFixPt(TInt, TBool)

TFloatFixPt ( TInt aVal,
TBool aBool
) [inline]

Construct a TFixPt from the given real 32-bit int.

Since
1.0

Parameters

TInt aVal : integer value
TBool aBool : not used.

TFloatFixPt(TReal32)

TFloatFixPt ( TReal32 aVal ) [inline]

Construct a TFixPt from the given TReal32.

Since
1.0

Parameters

TReal32 aVal : value to copy from

TFloatFixPt(const TFloatFixPt &)

TFloatFixPt ( const TFloatFixPt & aFixpt ) [inline]

Construct a TFixPt from the given TFixPt.

Since
1.0

Parameters

const TFloatFixPt & aFixpt : value to copy from

Member Functions Documentation

Abs(TFloatFixPt &)

TFloatFixPt Abs ( TFloatFixPt & aValue )

Return the absolute value for the given number.

Since
1.0

Parameters

TFloatFixPt & aValue : real number to find absolute value

ConvertString(const TDesC &)

TFloatFixPt ConvertString ( const TDesC & aVal ) [static]

Parse the given string for a TFixPt.

Since
1.0

Parameters

const TDesC & aVal : string containing a real number.

ConvertString(const TDesC &, TFloatFixPt &)

TInt ConvertString ( const TDesC & aValueString,
TFloatFixPt & aValue
) [static]

Parse the given string for a TFixPt.

Since
1.0

Parameters

const TDesC & aValueString
TFloatFixPt & aValue

FixedSqrtGeneral(TInt32, TUint32)

TInt32 FixedSqrtGeneral ( TInt32 aValue,
TUint32 aFracbits
) [static]

Return the square root value for the given number.

Since
1.0

Parameters

TInt32 aValue : 32-bit representation of real number
TUint32 aFracbits

FracAsInt()

TInt32 FracAsInt ( ) [inline]

Return the fractional portion as an int representation.

Since
1.0

GetString(TDes &)

void GetString ( TDes & aBuf ) const

Get the string representation of this real number.

Since
1.0

Parameters

TDes & aBuf

GfxMultiplyAsm(TInt)

void GfxMultiplyAsm ( TInt aValue ) [private, inline]

Optimized method to do multiplication using assembly.

Since
1.0

Parameters

TInt aValue : real number to find multiply with

RawData()

TInt32 RawData ( ) [inline]

Return the 32-bit data for this TFixPt.

Since
1.0

Round()

TInt32 Round ( ) [inline]

Return the number rounded to the next whole number.

Since
1.0

Sqrt(TFloatFixPt)

TFloatFixPt Sqrt ( TFloatFixPt aValue ) [static]

Return the square root value for this number.

Since
1.0

Parameters

TFloatFixPt aValue : real number to find square root

operator TInt()

operator TInt ( ) const [inline]

Casting operator to TInt.

Since
1.0

operator TInt32()

operator TInt32 ( ) const [inline]

Casting operator to TInt32.

Since
1.0

operator TReal32()

operator TReal32 ( ) const [inline]

Casting operator to TReal32.

Since
1.0

operator!=(const TFloatFixPt &)

TInt operator!= ( const TFloatFixPt & aVal ) const [inline]

Not Equals operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to compare.

operator*(const TFloatFixPt &)

TFloatFixPt operator* ( const TFloatFixPt & aVal ) const [inline]

Multiplication operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to multiply with.

operator*=(const TFloatFixPt &)

TFloatFixPt & operator*= ( const TFloatFixPt & aVal ) [inline]

Multiplication assignment operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to multiply with.

operator+(const TFloatFixPt &)

TFloatFixPt operator+ ( const TFloatFixPt & aVal ) const [inline]

Addition operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to add with.

operator+=(const TFloatFixPt &)

TFloatFixPt & operator+= ( const TFloatFixPt & aVal ) [inline]

Addition assignment operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to add with.

operator-(const TFloatFixPt &)

TFloatFixPt operator- ( const TFloatFixPt & aVal ) const [inline]

Subtraction operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to subtract.

operator-=(const TFloatFixPt &)

TFloatFixPt & operator-= ( const TFloatFixPt & aVal ) [inline]

Subtraction assignment operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to substract.

operator/(const TFloatFixPt &)

TFloatFixPt operator/ ( const TFloatFixPt & aVal ) const [inline]

Division operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to divide with.

operator/=(const TFloatFixPt &)

TFloatFixPt & operator/= ( const TFloatFixPt & aVal ) [inline]

Division assignment operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to divide with.

operator<(const TFloatFixPt &)

TInt operator< ( const TFloatFixPt & aVal ) const [inline]

Less than operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to compare.

operator<<(const TInt)

TFloatFixPt operator<< ( const TInt aN ) const [inline]

Operator to left shift

Since
1.0

Parameters

const TInt aN : bits to be shifted.

operator<=(const TFloatFixPt &)

TInt operator<= ( const TFloatFixPt & aVal ) const [inline]

Less than or equal to operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to compare.

operator=(TInt32)

TFloatFixPt & operator= ( TInt32 aVal ) [inline]

Assignment operator.

Since
1.0

Parameters

TInt32 aVal : value to assign from.

operator=(TInt)

TFloatFixPt & operator= ( TInt aVal ) [inline]

Assignment operator.

Since
1.0

Parameters

TInt aVal : value to assign from.

operator=(TReal32)

TFloatFixPt & operator= ( TReal32 aVal ) [inline]

Assignment operator.

Since
1.0

Parameters

TReal32 aVal : value to assign from.

operator==(const TFloatFixPt &)

TInt operator== ( const TFloatFixPt & aVal ) const [inline]

Equal operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to compare.

operator>(const TFloatFixPt &)

TInt operator> ( const TFloatFixPt & aVal ) const [inline]

Greater than operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to compare.

operator>=(const TFloatFixPt &)

TInt operator>= ( const TFloatFixPt & aVal ) const [inline]

Greater than or equal to operator.

Since
1.0

Parameters

const TFloatFixPt & aVal : value to compare.

operator>>(const TInt)

TFloatFixPt operator>> ( const TInt aN ) const [inline]

operator to right shift.

Since
1.0

Parameters

const TInt aN

Member Data Documentation

TInt iValue

TInt iValue

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