pub unsafe extern "C" fn cudnnGetConvolutionBackwardFilterAlgorithm_v7(
handle: cudnnHandle_t,
srcDesc: cudnnTensorDescriptor_t,
diffDesc: cudnnTensorDescriptor_t,
convDesc: cudnnConvolutionDescriptor_t,
gradDesc: cudnnFilterDescriptor_t,
requestedAlgoCount: c_int,
returnedAlgoCount: *mut c_int,
perfResults: *mut cudnnConvolutionBwdFilterAlgoPerf_t
) -> cudnnStatus_t