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System.TypInfo.TFloatType

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Delphi

TFloatType = (ftSingle, ftDouble, ftExtended, ftComp, ftCurr);

C++

enum DECLSPEC_DENUM TFloatType : unsigned char { ftSingle, ftDouble, ftExtended, ftComp, ftCurr };

Properties

Type Visibility Source Unit Parent
enum public
System.TypInfo.pas
System.TypInfo.hpp
System.TypInfo System.TypInfo

Description

Enumerates floating point number types in the TTypeData record.

The GetTypeData routine utilises Delphi's RTTI (Run Time Type Information) to return a pointer to TTypeData record that describes a component property data type.

TTypeData is a variant record : the layout depends on the property TTypeKind value. When it is tkFloat, the data is one of the TFloatType enumerated values.

The TFloatType value meanings are as follows :



Value Meaning

ftSingle

Single data type. (-1.5 x 10^45 .. 3.4 x 10^38)

ftDouble

Double data type. (-5.0 x 10^324 .. 1.7 x 10^308)

ftExtended

Extended data type. (-3.6 x 10^4951 .. 1.1 x 10^4932)

ftComp

Comp data type. (-2^63+1 .. 2^63-1)

ftCurr

Currency data type. (20 significant digits, 4 decimal places)



See Also

Code Examples


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