Function cusparseZcsru2csr_bufferSizeExt 

pub unsafe extern "C" fn cusparseZcsru2csr_bufferSizeExt(
    handle: cusparseHandle_t,
    m: c_int,
    n: c_int,
    nnz: c_int,
    csrVal: *mut cuDoubleComplex,
    csrRowPtr: *const c_int,
    csrColInd: *mut c_int,
    info: csru2csrInfo_t,
    pBufferSizeInBytes: *mut size_t,
) -> cusparseStatus_t