Function rcudnn::cudnnRNNBackwardWeightsEx

pub unsafe extern "C" fn cudnnRNNBackwardWeightsEx(
    handle: *mut cudnnContext,
    rnnDesc: *mut cudnnRNNStruct,
    xDesc: *mut cudnnRNNDataStruct,
    x: *const c_void,
    hxDesc: *mut cudnnTensorStruct,
    hx: *const c_void,
    yDesc: *mut cudnnRNNDataStruct,
    y: *const c_void,
    workSpace: *mut c_void,
    workSpaceSizeInBytes: usize,
    dwDesc: *mut cudnnFilterStruct,
    dw: *mut c_void,
    reserveSpace: *mut c_void,
    reserveSpaceSizeInBytes: usize
) -> cudnnStatus_t