pub unsafe extern "C" fn cudnnGetConvolutionBackwardDataWorkspaceSize(
handle: cudnnHandle_t,
wDesc: cudnnFilterDescriptor_t,
dyDesc: cudnnTensorDescriptor_t,
convDesc: cudnnConvolutionDescriptor_t,
dxDesc: cudnnTensorDescriptor_t,
algo: cudnnConvolutionBwdDataAlgo_t,
sizeInBytes: *mut usize
) -> cudnnStatus_t