CPLIB_MATH_OSAK = 1

proc initPrimeFactorTable(maxn: int): PrimeFactorTable {....raises: [], tags: [].}

proc primefactor(table: PrimeFactorTable; x: int): seq[int] {....raises: [],
    tags: [].}

proc primefactor_table(table: PrimeFactorTable; x: int): Table[int, int] {.
    ...raises: [KeyError], tags: [].}

proc primefactor_tuple(table: PrimeFactorTable; x: int): seq[(int, int)] {.
    ...raises: [], tags: [].}