CPLIB_MATRIX_MATOPS = 1

proc rotate(a: var seq[string]; num: int = 1) {....raises: [], tags: [].}

proc rotate[T](a: var seq[seq[T]]; num: int = 1)

proc rotated(a: seq[string]; num: int = 1): seq[string] {....raises: [], tags: [].}

proc rotated[T](a: seq[seq[T]]; num: int = 1): seq[seq[T]]

proc transpose(a: var seq[string]) {....raises: [], tags: [].}

proc transpose[T](a: var seq[seq[T]])

proc transposed(a: seq[string]): seq[string] {....raises: [], tags: [].}

proc transposed[T](a: seq[seq[T]]): seq[seq[T]]

proc trim(a: var seq[string]; zero: char = '0') {....raises: [], tags: [].}

proc trim[T](a: var seq[seq[T]]; zero: T)

proc trimmed(a: seq[string]; zero: char = '0'): seq[string] {....raises: [],
    tags: [].}

proc trimmed[T](a: seq[seq[T]]; zero: T): seq[seq[T]]