Method decreaseVertexDegree

gbbs/graph.h:69–72

degree must be <= old_degree

  // degree must be <= old_degree
  void decreaseVertexDegree(uintE id, uintE degree) {
    assert(degree <= v_data[id].degree);
    v_data[id].degree = degree;
  }

  void zeroVertexDegree(uintE id) { decreaseVertexDegree(id, 0); }