code: def cublasDsyr2(handle, uplo, n, alpha, x, incx, y, incy, A, lda):
      
  
      status = _libcublas.cublasDsyr2_v2(handle, 
                                         _CUBLAS_FILL_MODE[uplo], n, 
                                         ctypes.byref(ctypes.c_double(alpha)), 
                                         int(x), incx, int(y), incy, 
                                         int(A), lda)                                       
      cublasCheckStatus(status)
docs: Rank-2 operation on real symmetric matrix.