Standard Data Type Limits

Standard variable types and limits.

Numeric Types

Type	Size in bits	Format	Minimum Value	Maximum Value	Literal Suffix	Sig. Digits
BYTE	8	signed integer	-128	+127		2+
UBYTE	8	unsigned integer	0	+255		2+
SHORT	16	signed integer	-32768	+32767		4+
USHORT	16	unsigned integer	0	65535		4+
LONG	32	signed integer	-2147483648	+2147483647	&, l	9+
ULONG	32	unsigned integer	0	4294967295	ul	9+
INTEGER	32/64 [*]	signed integer	[*]	[*]	%	[*]
UINTEGER	32/64 [*]	unsigned integer	[*]	[*]	u	[*]
LONGINT	64	signed integer	-9 223 372 036 854 775 808	+9 223 372 036 854 775 807	ll	18+
ULONGINT	64	unsigned integer	0	+18 446 744 073 709 551 615	ull	19+
SINGLE	32	floating point	[**]+/-1.401 298 E-45	[**]+/-3.402 823 E+38	!, f	6+
DOUBLE	64	floating point	[**]+/-4.940 656 458 412 465 E-324	[**]+/-1.797 693 134 862 316 E+308	#, d	15+

[*] Integer and UInteger data types vary with platform, matching the size of pointers.
[**] The minimum and maximum values for the floating-point types Single and Double are, respectively, the values closest to zero and the values closest to positive and negative infinity.

String Types

Type	Character Size (in bytes)	Minimum Size (in characters)	Maximum Size (in characters)	Literal Suffix
String	1	0	[**]+2147483647	$
Zstring	1	0	[**]+2147483647	[N/A]
Wstring	[*]	[*]0	[,*]+2147483647	[N/A]

[*] Unicode, or "wide", characters vary in both size and availability with platform.
[**] All runtime library string procedures take and produce Integer values for sizes and positions. The actual maximum size will vary (smaller) with storage location and/or platform.

Arrays

Maximum Subscript Range	Maximum Elements per Dimension	Minimum/Maximum Dimensions	Maximum Size (in bytes)
[*][-2147483648, +2147483647]	[*]+2147483647	1/9	[*]+2147483647

[*] All runtime library array procedures take and produce Integer values for subscripts and indexes. The actual limits will vary (smaller) with the number of dimensions, element size, storage location and/or platform.