Bitwise Logical Functions

The following bitwise logical functions are available:

BITNOT(expression)

BITAND(expression1,expression2)

BITNAND(expression1,expression2)

BITOR(expression1,expression2)

BITNOR(expression1,expression2)

BITXOR(expression1,expression2)

BITXNOR(expression1,expression2)

Here each expression is a valid DataBasic expression or any string, substring or value; may be expressed as a variable name, a value, or a string enclosed in quote marks that evaluates to a decimal number (of which only the integer part is used).

Each expression is converted to a hexadecimal number before the logical operator is performed. If one expression is shorter than the other the shorter one is first sign extended to be the same length. There is no limit to the length that can be accommodated.

The operation of these functions is summarised below.

Expression	Bit string
Expression A	0011
Expression B	0101
Function	Result
BITNOT(A)	1100
BITNOT(B)	1010
BITAND(A,B)	0001
BITNAND(A,B)	1110
BITOR(A,B)	0111
BITNOR(A,B)	1000
BITXOR(A,B)	0110
BITXNOR(A,B)	1001

Example

Given the following program:

1
2    IN.H = "78F0"
3    IN.D = IN.H "MCXD"
4    OUT.D = BITNOT(IN.D)
5    OUT.H = OUT.D "MCDX"
6    CRT IN.H, IN.D
7    CRT OUT.H, OUT.D
8

The output will be:

78F0              30960
870F              34575

See also

BITAND function, BITNAND function, BITNOR function, BITNOT function, BITOR function, BITXNOR function, BITXOR function.