Type Alias PFN_cusparseSpGEMM_createDescr 

pub type PFN_cusparseSpGEMM_createDescr = unsafe extern "C" fn(descr: *mut cusparseSpGEMMDescr_t) -> cusparseStatus_t;

cuSPARSE: create an opaque descriptor for sparse matrix × sparse matrix multiplication. See https://docs.nvidia.com/cuda/cusparse/index.html.