Ergo.Numeric.decimal
You're seeing just the function
decimal, go back to Ergo.Numeric module for more information.
Link to this function
decimal(opts \\ [])
Examples
iex> alias Ergo.Context
iex> import Ergo.Numeric
iex> context = Ergo.parse(decimal(), "234.56")
iex> assert %Context{status: :ok, ast: 234.56} = context