flex_xor_vars |
Exclusive OR Variables
Usage
status = flex_xor_vars(u8 boardID, u8 variable1, u8 variable2, u8 returnVector);
Purpose
Performs a bitwise Exclusive OR (XOR) of the values in the two variables and returns the result.
Parameters
| Name | Type | Description |
|---|---|---|
| boardID | u8 | assigned by Measurement & Automation Explorer (MAX) |
| variable1 | u8 | first operand |
| variable2 | u8 | second operand |
| returnVector | u8 | destination for the result |
Parameter Discussion
variable1 is the variable holding the first operand. Valid inputs are variables (0x01 through 0x78) and indirect variables (0x81 through 0xF8).
variable2 is the variable holding the second operand. Valid inputs are variables (0x01 through 0x78) and indirect variables (0x81 through 0xF8).
returnVector indicates the destination for the return data generated by this function. Available return vectors include return data to the host (0xFF), to a variable (0x01 through 0x78), to an indirect variable (0x81 through 0xF8), and return no data (0). Refer to Input and Return Vectors for more detailed information.
Using This Function
This function performs a bitwise logical XOR of the values in the two variables and returns the result to the destination specified by the returnVector.
V1 XOR V2 = Result
where:
V1 is the value at variable1.
V2 is the value at variable2.
Result is stored in the location pointed to by returnVector.
The result can be returned to a new variable or one of the two input variables, returned to the host computer, or thrown away. In all cases the EQUAL condition code is set True if the result equals zero (all bits low) and False if any bit is set. The GREATER THAN and LESS THAN codes are also set but can be confusing after logical bitwise operations.