On 7/18/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
i have a hex value which needs to be checked if a particular bit is
set in that string.
You probably want to start with the hex() function, which turns a
string like '01AF' into a number. But there are other ways; if it's an
arbitrarily-long hex string, you could use pack to turn it into a
bitstring.
my $bitstring = pack("H*", '01AF');
for example, i need to check if 12th bit is set.
That's possible with the vec() function; see perlfunc.
i tried doing mask(0x1000) with my input value i receive, so that only
if 12th bit is 1, will the answer be one....but can i do a direct
comparison as in
$mp = $inputhexval & 0x1000;
What happened when you tried it?
The & operator is documented in the perlop manpage.
Good luck with it!
--Tom Phoenix
Stonehenge Perl Training
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