I know this is 2 years old but I stumbled on this and it might similarly confuse someone else.

THIS is the corrected bit_test subroutine

sub bit_test {
  my ($value, $bit) = @_;

  return $value & (1 << $bit);
}

[download]

Original code would only test the first bit position (1 << 0).

In reply to Re^2: bitmask check by Anonymous Monk
in thread bitmask check by wwe

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