Fuad Efendi
Posts: 1
Nickname: 102910
Registered: Jan, 2017
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Checksum
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Posted: Jan 16, 2017 8:35 AM
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Page 102 of the book (PDF, 3rd edition):
class ChecksumAccumulator {
private var sum = 0
def add(b: Byte): Unit = {
sum += b
}
def checksum(): Int = {
return ~(sum & 0xFF) + 1
}
}
Why is such definition? I believe "checksum" is sum of Words in case of multi-Word representation in computer memory.
Can anyone confirm / explain method above, what it does and why it is called "checksum"? Thanks,
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