proc abs(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc absValue(arr: var NDArray): var NDArray {.discardable, ...raises: [],
    tags: [], forbids: [].}

proc acos(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc asin(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc atan(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc cos(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc cosh(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc exp(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc log(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc pow(arr: var NDArray; power: float): var NDArray {.discardable, ...raises: [],
    tags: [], forbids: [].}

proc sign(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc sin(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc sinh(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc sqrt(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc tan(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}

proc tanh(arr: var NDArray): var NDArray {.discardable, ...raises: [], tags: [],
    forbids: [].}