Calculates the shortest path between two nodes.
(tpm_traceshort trace_id start end)
Returns T or nil.
| trace_id | Tracing model ID (real), returned by tpm_tracealloc |
| start | Element ID of start node (real) |
| end | Element ID of end node (real) |
For the shortest path trace to succeed, the total calculated resistance cannot be greater than the value set for the maximum resistance or less than the value set for the minimum resistance. See tpm_tracesetminres and tpm_tracesetmaxres. The accumulated resistance value is the total resistance of the nodes and links that make up the shortest path.