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Mini Shell
Mini Shell
# NOTE: Derived from ../../blib/lib/NetAddr/IP/UtilPP.pm.
# Changes made here will be lost when autosplit is run again.
# See AutoSplit.pm.
package NetAddr::IP::UtilPP;
#line 523 "../../blib/lib/NetAddr/IP/UtilPP.pm (autosplit into ../../blib/lib/auto/NetAddr/IP/UtilPP/_bin2bcdn.al)"
sub _bin2bcdn {
my($b128) = @_;
my @binary = unpack('N4',$b128);
my @nbcd = (0,0,0,0,0); # 5 - 32 bit registers
my ($add3, $msk8, $bcd8, $carry, $tmp);
my $j = 0;
my $k = -1;
my $binmsk = 0;
foreach(0..127) {
unless ($binmsk) {
$binmsk = 0x80000000;
$k++;
}
$carry = $binary[$k] & $binmsk;
$binmsk >>= 1;
next unless $carry || $j; # skip leading zeros
foreach(4,3,2,1,0) {
$bcd8 = $nbcd[$_];
$add3 = 3;
$msk8 = 8;
$j = 0;
while ($j < 8) {
$tmp = $bcd8 + $add3;
if ($tmp & $msk8) {
$bcd8 = $tmp;
}
$add3 <<= 4;
$msk8 <<= 4;
$j++;
}
$tmp = $bcd8 & 0x80000000; # propagate carry
$bcd8 <<= 1; # x2
if ($carry) {
$bcd8 += 1;
}
$nbcd[$_] = $bcd8;
$carry = $tmp;
}
}
pack('N5',@nbcd);
}
# end of NetAddr::IP::UtilPP::_bin2bcdn
1;
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