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LRC( ) Function
Longitudinal-Redundancy Check
Format
LRC(string$[,ERR=stmtref])
Where:
string$
Character string whose longitudinal redundancy checksum is to be
calculated.
stmtref
Program line number or label to transfer control to.
Returns
One-byte string, longitudinal checksum.
Note: The LRC( ) function is used primarily in conjunction with synchronous
communications.
Description
The LRC( ) function returns the longitudinal redundancy checksum of a character
string. The longitudinal redundancy check of a character string is a one byte string
resulting from a logical XOR( ) comparison of all the characters in the string.
Examples
A$=HTA(LRC($0102$)) ! yields hex 03
A$=HTA(LRC($0305$)) ! yields hex 06