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### `iand`, `ior`, `ixor`

`iand(i1,i2)`
  :: bit ごとの and
`ior(i1,i2)`
  :: bit ごとの or
`ixor(i1,i2)`
  :: bit ごとの xor

return
  整数
i1,i2
  整数

- 整数 i1, i2 の絶対値を bit 列とみて演算する.
- 引数の符号は無視し, 非負の値を返す.

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

`参照`
  section `ishift`.

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