perl pack bcd -> BCD Clock built using only binary logic., Encoding BCD

so 

sub encode_BCD {
    return pack 'H*', join '', @_
}

[download]

If you need to ensure < 99 , or dealing with signs properly, you'll have to add that part

Seems to work https://en.wikipedia.org/wiki/Binary_coded_decimal 

-1,234,56
0001 0010 0011 0100 0101 0110 0111 1101
1    2    3    4    5    6    7    -

$ perl -le " print join q/ /, split /....\K/, unpack q/B*/, pack q/H*/
+, q/1234567-/ "
0001 0010 0011 0100 0101 0110 0111 1101

$ perl -le " print join q/ /, unpack q/(A4)*/, unpack q/B*/, pack q/H*
+/, q/1234567-/ "
0001 0010 0011 0100 0101 0110 0111 1101

[download]

In reply to Re: Binary Coded Decimal by Anonymous Monk
in thread Binary Coded Decimal by adrce55

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