c-treeDB API API for C

Scalar Types

These are the data types that map directly to C or C++ scalar types. c-treeDB API allows the use of c-tree scalar data types such as:

TEXT	Declared as 8-bit char. This is the equivalent of C type char.
UTEXT	Declared as 8-bit unsigned char. This is the equivalent of C type unsigned char.
COUNT	Declared as 16-bit integer. This is the equivalent of C type short.
UCOUNT	Declared as 16-bit unsigned integer. This is the equivalent of C type unsigned short.
NINT	Declared as the system natural integer. This is equivalent of C type integer.
UINT	Declared as the system natural unsigned integer. This is the equivalent of C type unsigned integer.
LONG	Declared as 32-bit signed integer. This is the equivalent of C type long for 32-bit CPUs.
ULONG	Declared as 32-bit unsigned integer. This is the equivalent of C type unsigned long for 32-bit CPUs.

c-treeDB API also exposes the following data types, based on c-tree scalar types. These c-treeDB API types also provide a one-to-one relationship with c-treeDB API field types:

CTBOOL	Declared as an integer, this type holds Boolean values using the predefined Boolean constants YES for true and NO for false.
CTSIGNED	Declared as a signed long (32-bit signed integer), this type holds any scalar value: 8-bit signed integer (TEXT), 16-bit signed integer (COUNT), integers (NINT), and 32-bit signed integers (LONG).
CTUNSIGNED	Declared as an unsigned long (32-bit unsigned integer), this type holds any scalar value: 8-bit unsigned char (UTEXT), 16-bit unsigned integer (UCOUNT), unsigned integers (UINT), and 32-bit unsigned integers (ULONG).
DOUBLE	Declared as C type double.
CTFLOAT	Declared as C type double.

All the types in this category can be manipulated using the normal operators defined for the C and C++ language.