code: public static int cusparseXcscsort_bufferSizeExt(
          cusparseHandle handle, 
          int m, 
          int n, 
          int nnz, 
          Pointer cscColPtrA, 
          Pointer cscRowIndA, 
          long[] pBufferSizeInBytes)
      {
          return checkResult(cusparseXcscsort_bufferSizeExtNative(handle, m, n, nnz, cscColPtrA, cscRowIndA, pBufferSizeInBytes));
      }
docs: Description: Sort sparse matrix stored in CSC format