int check_decr_ids | (unit, prev_unit_id, prev_layer_id) |
UNIT | *unit | A pointer to a UNIT structure. |
long | prev_unit_id | The unit ID previously encountered (for using the function recursively). Therefore, the function should be called with this parameter set to a value larger than the UNIT 's UnitId, e.g. UnitId + 1. |
long | prev_layer_id | The layer ID previously encountered (for using the function recursively). Therefore, the function should be called with this parameter set to a value larger than the UNIT 's LayerId, e.g. LayerId + 1. |
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