hex to binary

[Venkatesh can....can...]

How to convert hexadecimal number to binary in perl ??

 

[Josef Moellers]

How to convert hexadecimal number to binary in perl ??

perldoc -f hex

 

[Jürgen Exner]

How to convert hexadecimal number to binary in perl ??

You must have missed the current discussion titled "decrease MAC".
There are no hexadicimal numbers but only numbers in hexadecimal
representation. And the same for binary.
So, use hex() to convert the string into a number and then sprintf() to
convert the number into a binary representation as string.

jue

 

[benkasminbullock]

How to convert hexadecimal number to binary in perl ??

#! perl
use warnings;
use strict;

# Create the stuff for matching

my $matches = "0123456789ABCDEF";
my %hex2bin;
for (my $i=0;$i<16;$i++) {
$hex2bin{substr($matches,$i,1)}=int($i/8).int(($i/4)%2).int(($i/
2)%2).int($i%2);
}

# Now test

my $hex_string = "1234BAad12345";
print "Before: $hex_string\n";
$hex_string =~ s/([$matches])/$hex2bin{uc($1)}/gi;
print "After: $hex_string\n";