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lib/crypto/point.ex
defmodule Tezex.Crypto.Point do
@moduledoc """
Holds point data. Is usually handled internally by the library and serves only as detailed information to the end-user.
Parameters:
- `:x` [integer]: first point coordinate;
- `:y` [integer]: first point coordinate;
- `:z` [integer]: first point coordinate (used only in Jacobian coordinates);
"""
defstruct [:x, :y, z: 0]
@type t :: %__MODULE__{
x: non_neg_integer,
y: non_neg_integer,
z: non_neg_integer
}
@spec is_at_infinity?(__MODULE__.t()) :: boolean
def is_at_infinity?(p) do
p.y == 0
end
end