`iand', `ior', `ixor'
---------------------

iand(I1,I2)
     :: bitwise and

ior(I1,I2)
     :: bitwise or

ixor(I1,I2)
     :: bitwise xor

RETURN
     integer

I1 I2
     integer

   * The absolute value of the argument is regarded as a bit string.

   * The sign of the argument is ignored and a non-negative integer is
     returned.

     [0] ctrl("hex",1);
     0x1
     [1] iand(0xeeeeeeeeeeeeeeee,0x2984723234812312312);
     0x4622224802202202
     [2] ior(0xa0a0a0a0a0a0a0a0,0xb0c0b0b0b0b0b0b);
     0xabacabababababab
     [3] ixor(0xfffffffffff,0x234234234234);
     0x2cbdcbdcbdcb

References
     *Note `ishift': ishift.

