Data Types

The following data types are included by default in the uCalc library, and are for the most part declared in Types.uc if you are using the uCalc Interactive Interpreter, or a uCalc header/include file for your compiler if you are using uCalc Fast Math Parser:

Single	Single precision floating point
Double	Double precision floating point
Extended	Extended precision (80-bit long double) floating point
Byte	8-bit unsigned integer
Word	16-bit unsigned integer
Dword	32-bit unsigned integer
Integer	16-bit signed integer
Long	32-bit signed integer
Int64	64-bit signed integer
Currency	64-bit currency type
String	Dynamic multi-byte string with 1 byte/character
WideString	Dynamic Unicode string with 2-bytes/character
LPCSTR	Null-terminated string
FixedString	Fixed-length string
Stack	Multi-purpose stack list type
Table	Table
SortedList	Sorted list
Void	For routines where the return type is not needed

Default data type

uCalc Fast Math Parser starts with the default type of Double for the following compilers: VB Classic, VB.NET (and other .NET compilers), and VC++. The starting default type is Extended for these compilers: PowerBASIC, Delphi, and BC++B. The uCalcWrp.dll file also uses Extended as the default type.

You may change the default data type using one of the following methods:

ucDefine "DefaultType: TypeName"

or

uCalc(uc_SetDefaultType, 0, TypeHandle)

where TypeName is the name of a data type, from the list of types listed above, and TypeHandle is a numeric value representing the handle of a data type. Some named type handles, such as ucLong, ucDouble, ucExtended, etc., are defined in the include file.

Whenever a data type is not explicitly stated in a definition (such as for functions and variables), the default type will be implied.

It is best to use the default numeric and string types that were set in the include file for your compiler, unless you have defined native routines using other data types. Otherwise internal conversions may take place, which can slow down operations.