pub unsafe extern "C" fn cudnnFindRNNBackwardWeightsAlgorithmEx(
handle: cudnnHandle_t,
rnnDesc: cudnnRNNDescriptor_t,
seqLength: c_int,
xDesc: *const cudnnTensorDescriptor_t,
x: *const c_void,
hxDesc: cudnnTensorDescriptor_t,
hx: *const c_void,
yDesc: *const cudnnTensorDescriptor_t,
y: *const c_void,
findIntensity: f32,
requestedAlgoCount: c_int,
returnedAlgoCount: *mut c_int,
perfResults: *mut cudnnAlgorithmPerformance_t,
workspace: *const c_void,
workSpaceSizeInBytes: usize,
dwDesc: cudnnFilterDescriptor_t,
dw: *mut c_void,
reserveSpace: *const c_void,
reserveSpaceSizeInBytes: usize
) -> cudnnStatus_t