Each of the three bitwise operations has a different priority level:
and_expr: shift_expr | and_expr "&" shift_expr xor_expr: and_expr | xor_expr "^" and_expr or_expr: xor_expr | or_expr "|" xor_expr
The "&" operator yields the bitwise AND of its arguments, which
must be plain or long integers. The arguments are converted to a
common type.
The "^" operator yields the bitwise XOR (exclusive OR) of its
arguments, which must be plain or long integers. The arguments are
converted to a common type.
The "|" operator yields the bitwise (inclusive) OR of its
arguments, which must be plain or long integers. The arguments are
converted to a common type.