Function t8_forest_element_owners_at_neigh_face_bounds

Function Documentation

void t8_forest_element_owners_at_neigh_face_bounds(t8_forest_t forest, t8_locidx_t ltreeid, const t8_element_t *element, int face, int *lower, int *upper)

Constant time algorithm to find bounds for the owner processes that own descendant of a face neighbor of a given local element that touch the given face.

Note

If on input lower >= upper, then the bounds are not changed by this algorithm. We interpret lower = such that the owner is unique and equals lower.

Note

forest must be committed before calling this function. This is equivalent to calling t8_forest_element_face_neighbor and t8_forest_element_owners_at_face_bounds for the resulting neighbor.

Parameters:

  • forest – [in] The forest.

  • ltreeid – [in] The local id of the tree in which the element lies.

  • element – [in] The element, whose neighbor’s face owners should be computed.

  • face – [in] A face of element.

  • lower – [inout] On input a known lower bound for the owner process, on output a (better) bound.

  • upper – [inout] On input a known upper bound for the owner process, on output a (better) bound.