Function rcudnn::cudnnSetCTCLossDescriptorEx

pub unsafe extern "C" fn cudnnSetCTCLossDescriptorEx(
    ctcLossDesc: *mut cudnnCTCLossStruct, 
    compType: cudnnDataType_t, 
    normMode: cudnnLossNormalizationMode_t, 
    gradMode: cudnnNanPropagation_t
) -> cudnnStatus_t