abit v0.1.0 Abit View Source

Functions to use :atomics as a bit array.

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Functions

Returns bit at bit_index in atomic ref.

Returns number of bits in atomics ref.

Returns a 2 tuple containing

Bit intersection of atomics using Bitwise AND operator.

Bit merge atomics using Bitwise OR operator. ref_b will be merged into ref_a.

Sets the bit at bit_index to bit in the atomic ref.

Returns number of bits set to 1 in atomics array ref.

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Returns bit at bit_index in atomic ref.

iex> ref = :atomics.new(1, signed: false) iex> ref |> :atomics.put(1, 3) iex> Abit.bit_at(ref, 0) 1 iex> Abit.bit_at(ref, 1) 1 iex> Abit.bit_at(ref, 2) 0

Returns number of bits in atomics ref.

iex> ref = :atomics.new(3, signed: false) iex> ref |> Abit.bit_count 192

Returns a 2 tuple containing:

atomics_index - the index of the atomics array where the bit is located integer_bit_index - the index of the bit in the integer at atomics_index

iex> Abit.bit_position(0) {1, 0} iex> Abit.bit_position(11) {1, 11} iex> Abit.bit_position(64) {2, 0}

Bit intersection of atomics using Bitwise AND operator.

After the operation ref_a will be returned.

Bit merge atomics using Bitwise OR operator. ref_b will be merged into ref_a.

After the operation ref_a will be returned.

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set_bit(ref, bit_index, bit)

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Sets the bit at bit_index to bit in the atomic ref.

iex> ref = :atomics.new(1, signed: false) iex> ref |> :atomics.put(1, 1) iex> ref |> :atomics.get(1) 1 iex> ref |> Abit.set_bit(0, 0) iex> ref |> :atomics.get(1) 0

Returns number of bits set to 1 in atomics array ref.

iex> ref = :atomics.new(1, signed: false) iex> ref |> :atomics.put(1, 3) iex> Abit.set_bits_count(ref) 2 iex> ref2 = :atomics.new(1, signed: false) iex> Abit.set_bits_count(ref2) 0