| Navigation: Language Reference > 3 - Variable Declarations > Data Types >====== LONG (four-byte signed integer) ====== |    |
| label | LONG([initial value]) | [,DIM( )] [,OVER( )] [,NAME( )] [,EXTERNAL] [,DLL] [,STATIC] |
| [,THREAD] [,AUTO] [,PRIVATE] [,PROTECTED] |
| LONG | A four-byte signed integer. |
Format: ± magnitude
| |………………. |
Bits: 31 30 0
Range: -2,147,483,648 to 2,147,483,647
| initial value | A numeric constant. If omitted, the initial value is zero, unless the AUTO attribute is present. |
| DIM | Dimension the variable as an array. |
| OVER | Share a memory location with another variable. |
| NAME | Specify an alternate, “external” name for the field. |
| EXTERNAL | Specify the variable is defined, and its memory is allocated, in an external library. Not valid within FILE, QUEUE, or GROUP declarations. |
| DLL | Specify the variable is defined in a .DLL. This is required in addition to the EXTERNAL attribute. |
| STATIC | Specify the variable's memory is permanently allocated. |
| THREAD | Specify memory for the variable is allocated once for each execution thread. Also implicitly adds the STATIC attribute on Procedure Local data. |
| AUTO | Specify the variable has no initial value. |
| PRIVATE | Specify the variable is not visible outside the module containing the CLASS methods. Valid only in a CLASS. |
| PROTECTED | Specify the variable is not visible outside base CLASS and derived CLASS methods. Valid only in a CLASS. |
LONG declares a four-byte signed integer, using the Intel 8086 long integer format. The high-order bit is the sign bit (0 = positive, 1 = negative). Negative values are represented in standard two's complement notation.
The equivalent of a Win32 LONG in Clarion.NET is the CLALONG type. Use of LONG in Clarion.NET programs are equivalent to the INT64 .NET data type.
Example:
Count1 LONG !Declare four-byte signed integer
Count2 LONG,OVER(Count1) !Declare OVER the four-byte signed integer
Count3 LONG,DIM(4) !Declare it an array of 4 longs
Count4 LONG(5) !Declare with initial value
Count5 LONG,EXTERNAL !Declare as external
Count6 LONG,EXTERNAL,DLL !Declare as external in a .DLL
Count7 LONG,NAME('SixCount') !Declare with external name
ExampleFile FILE,DRIVER('Clarion') !Declare a file
Record RECORD
Count8 LONG,NAME('Counter') !Declare with external name
END
END
See Also: Clarion# Data Type Comparison Chart