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Note: 64bit data types are natively supported starting with Clarion 11. See INT64 and UINT64
This information is retained strictly for backward compatibility.
The Clarion RTL supports working with with 64-bit signed and unsigned integers. The RTL has 19 functions which provide a means to assign values, add, subtract, multiply, divide, bit-shift, convert to/from decimals, and more.
How to define a data structure to work with 64bit Intergers
(applicable for FILE structures or variables):
! Declaration of INT64 and UINT64 types
!
INT64 GROUP,TYPE
lo ULONG
hi LONG
END
!
UINT64 GROUP,TYPE
lo ULONG
hi ULONG
END
List of i64 functions:
·i64Sign ' return the sign
·i64Negate ' change the sign like the unary operator for numbers
·i64ABS ' equivalent to ABS()
·i64Is0 ' check for equality to 0
·is32Bit ' check the high half of number to be equal to 0
·i64Assign ' equivalent to the = assignment operator
·i64To32 ' take the lower 32 bits of the value
·i64FromDecimal ' direct DECIMAL to 64-bit integer conversion
·i64ToDecimal ' direct 64-bit integer to DECIMAL conversion
·i64Shift ' equivalent to BSHIFT (value, n)
·i64LShift ' equivalent to BSHIFT (value, n) if n is positive
·i64RShift ' equivalent to BSHIFT (value, -n) if n is positive
·i64Add ' equivalent to binary + operator
·i64Sub ' equivalent to binary ' operator
·i64Mult2 ' equivalent to n*=2
·i64Mult10 ' equivalent to n=n*10+k
·i64Mult ' equivalent to * operator
·i64Div10 ' equivalent to x=n%10; n/=10
·i64Div ' equivalent to / operator
Note: i64Div10 and i64Div for signed 64-bit integers assumes that the define(compatible_modulus) pragma is set to 'ON'.
See the i64.inc file for further details (located in Clarion\Libsrc\Win folder)
The i64.INC is self-documenting, it uses inline comments to describe the both parameters and return values.
Here is an example taken from the i64.inc file:
!!! <;summary>
!!! Assign 32-bit value to passed 64-bit integer variable
!!! <;/summary>
!!! <;param name='dest'>Variable to change.<;/param>
!!! <;param name='src'>Value to assign to destination variable.<;/param>
i64Assign PROCEDURE (*INT64 dest, LONG src),RAW,NAME('Cla$i64AssignS')