LBOUND

Platform	x64, Win32, .NET
Purpose	To return all the lower bounds or a specified lower bound of an array.
Class	Inquiry function.
Syntax	INTEGER FUNCTION LBOUND(ARRAY [, DIM [, KIND]]) INTEGER DIM, KIND
Description	ARRAY is an array of any type, not a scalar. If it is a pointer it must be associated. If it is an allocatable array it must be allocated. DIM (optional) is a scalar integer with a value in the range 1 < DIM < n, where n is the rank of ARRAY. The result is of default integer type. It is scalar if DIM is present; otherwise, the result is an array of rank one and size n, where n is the rank of ARRAY. If KIND is present it provides the INTEGER kind value of the result.
Return value	For an array section or for an array expression other than a whole array or array structure component, LBOUND(ARRAY, DIM) has the value 1. For a whole array or array structure component, LBOUND(ARRAY, DIM) has the value: equal to the lower bound for subscript DIM of ARRAY if dimension DIM of ARRAY does not have extent zero or if ARRAY is an assumed-size array of rank DIM, or 1 otherwise. LBOUND(ARRAY) has a value whose ith component is equal to LBOUND(ARRAY, i), for i = 1, 2, ..., n, where n is the rank of ARRAY.
Notes	LBOUND returns a value of default integer type on all platforms. For x64 this will be 32 bits by default.
Example	If A is declared by the statement REAL A(2:3,7:10) then LBOUND(A) is [2, 7] and LBOUND(A, DIM=2) is 7.