pub unsafe extern "C" fn cudnnGetBatchNormalizationBackwardExWorkspaceSize(
handle: *mut cudnnContext,
mode: cudnnBatchNormMode_t,
bnOps: cudnnBatchNormOps_t,
xDesc: *mut cudnnTensorStruct,
yDesc: *mut cudnnTensorStruct,
dyDesc: *mut cudnnTensorStruct,
dzDesc: *mut cudnnTensorStruct,
dxDesc: *mut cudnnTensorStruct,
dBnScaleBiasDesc: *mut cudnnTensorStruct,
activationDesc: *mut cudnnActivationStruct,
sizeInBytes: *mut usize
) -> cudnnStatus_t