pub unsafe extern "C" fn cudnnFindConvolutionBackwardDataAlgorithmEx(
handle: *mut cudnnContext,
wDesc: *mut cudnnFilterStruct,
w: *const c_void,
dyDesc: *mut cudnnTensorStruct,
dy: *const c_void,
convDesc: *mut cudnnConvolutionStruct,
dxDesc: *mut cudnnTensorStruct,
dx: *mut c_void,
requestedAlgoCount: i32,
returnedAlgoCount: *mut i32,
perfResults: *mut cudnnConvolutionBwdDataAlgoPerfStruct,
workSpace: *mut c_void,
workSpaceSizeInBytes: usize
) -> cudnnStatus_t