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update Bitwise #3

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update Bitwise #3

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8 changes: 4 additions & 4 deletions lib/bech32.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ defmodule Bech32 do
"""
@gen {0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3}

use Bitwise
import Bitwise

char_table = [
{0, ~c(qpzry9x8)},
Expand Down Expand Up @@ -48,9 +48,9 @@ defmodule Bech32 do
defp polymod(values) when is_list(values) do
values |> Enum.reduce(1, fn v, chk ->
b = (chk >>> 25)
chk = ((chk &&& 0x1ffffff) <<< 5) ^^^ v
chk = ((chk &&& 0x1ffffff) <<< 5) |> bxor(v)
0..4 |> Enum.reduce(chk, fn i, chk ->
chk ^^^ (if ((b >>> i) &&& 1) !== 0, do: @gen |> elem(i), else: 0)
bxor(chk, (if ((b >>> i) &&& 1) !== 0, do: @gen |> elem(i), else: 0))
end)
end)
end
Expand Down Expand Up @@ -153,7 +153,7 @@ defmodule Bech32 do
def create_checksum(hrp, data) when is_binary(hrp) and is_binary(data) do
data = :erlang.binary_to_list(data)
values = hrp_expand(hrp) ++ data
pmod = polymod(values ++ [0,0,0,0,0,0]) ^^^ 1
pmod = polymod(values ++ [0,0,0,0,0,0]) |> bxor(1)
(for i <- 0..5, do: (pmod >>> 5 * (5 - i)) &&& 31) |> :erlang.list_to_binary()
end

Expand Down