TF_Status* status);

typedef struct TF_WhileParams {
  // The number of inputs to the while loop, i.e. the number of loop variables.
  // This is the size of cond_inputs, body_inputs, and body_outputs.
  const int ninputs;

  // The while condition graph. The inputs are the current values of the loop
  // variables. The output should be a scalar boolean.
  TF_Graph* const cond_graph;