pub unsafe extern "C" fn cudnnFindConvolutionBackwardDataAlgorithmEx(
handle: cudnnHandle_t,
wDesc: cudnnFilterDescriptor_t,
w: *const c_void,
dyDesc: cudnnTensorDescriptor_t,
dy: *const c_void,
convDesc: cudnnConvolutionDescriptor_t,
dxDesc: cudnnTensorDescriptor_t,
dx: *mut c_void,
requestedAlgoCount: c_int,
returnedAlgoCount: *mut c_int,
perfResults: *mut cudnnConvolutionBwdDataAlgoPerf_t,
workSpace: *mut c_void,
workSpaceSizeInBytes: usize
) -> cudnnStatus_t