Chicken » Module (chicken bitwise)

## Module (chicken bitwise)

Binary integer operations are provided by the `(chicken bitwise)` module.

### Binary integer operations

bitwise-and N1 ...procedure
bitwise-ior N1 ...procedure
bitwise-xor N1 ...procedure
bitwise-not Nprocedure
arithmetic-shift N1 N2procedure

  Binary integer operations. `arithmetic-shift` shifts the argument N1 by N2 bits to the left. If N2 is negative, then N1 is shifted to the right. These operations only accept exact integers.

#### bit->boolean

bit->boolean N INDEXprocedure

  Returns `#t` if the bit at the position INDEX in the integer N is set, or `#f` otherwise. The rightmost/least-significant bit is bit 0.

#### integer-length

integer-length Nprocedure

  Returns the number of bits needed to represent the exact integer N in 2's complement notation.

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