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BitOperationX ( wordNr ; RC ; n ; OPC ; OP1 ; OP2 )

bitwise logical operation

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Erich Schmidt - Show more from this author

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

/* Name: BitOperationX( wordNr ; RC ; n ; OPC ; OP1 ; OP2 ) Requires other Custom Functions: BitLsbOperation() BitOperation() Notes: Function call at the highest recursion level requires the first both parameters are set to 0. Therefore, it's more comfortable to encapsulate this function by calling for instance BitOpX( n ; OPC ; OP1 ; OP2 ) = BitOperationX( 0 ; 0 ; n ; OPC ; OP1 ; OP2 ) 26.03.2012 - Version 1.0 =================================== Author: Erich Schmidt, info@schmidt-it-beratung.de =================================== The parameters OP1 and OP2 can be large integer numbers (where at least one of them is greater than 65,535). The function value is the result of a bitwise logical operation between OP1 and OP2. This Function works just as BitOperation(), unlike this function 16*n Bits are processed. The operation is given by the parameter OPC as well, which can be any integer number from 0 to 15. OPC determines what operation is performed */ Let( [ RC = RC + BitOperation( 0; 0; OPC ; OP1 ; OP2 ) * 2^( 16*wordNr) ] ; If( wordNr=n-1 ; RC ; BitOperationX( wordNr+1 ; RC ; n ; OPC ; Int(OP1/(2^16) ); Int(OP2/(2^16) ) ) ) ) Click to copy

The parameters OP1 and OP2 can be large integer numbers (where at least one of them is greater than 65,535). The function value is the result of a bitwise logical operation between OP1 and OP2. This Function works just as BitOperation(), unlike this function 16*n bits are processed.

Requires other Custom Functions:
BitLsbOperation()
BitOperation()

Notes:
Function call at the highest recursion level requires the first both parameters are set to 0.
Therefore, it's more comfortable to encapsulate this function by calling for instance
BitOpX( n ; OPC ; OP1 ; OP2 ) = BitOperationX( 0 ; 0 ; n ; OPC ; OP1 ; OP2 )

Parameters:
wordNr, RC these parameters must be set to 0 by the caller. Otherwise it leads to faulty results.
n number of 16-bit units to process
OP1;OP2 any integer values
OPC can be any integer number from 0 to 15

OPC=0 is true, if OP1 AND NOT OP1 is true (never)
OPC=1 is true, if NOT (OP1 OR OP2) is true
OPC=2 is true, if NOT OP1 AND OP2 is true
OPC=3 is true, if NOT OP1 is true
OPC=4 is true, if OP1 AND NOT OP2 is true
OPC=5 is true, if NOT OP2 is true
OPC=6 is true, if OP1 XOR OP2 is true (exclusive or)
OPC=7 is true, if NOT (OP1 AND OP2) is true
OPC=8 is true, if OP1 AND OP2 is true (conjunction)
OPC=9 is true, if NOT ( OP1 XOR OP2) is true (equivalence)
OPC=10 is true, if OP2 is true
OPC=11 is true, if NOT OP1 OR OP2 is true
OPC=12 is true, if OP1 is true
OPC=13 is true, if OP1 OR NOT OP2 is true
OPC=14 is true, if OP1 OR OP2 is true (disjunction)
OPC=15 ist true, if OP1 OR NOT OP1 is true (always)

 

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