Commit Graph

14 Commits

Author SHA1 Message Date
Dan Kortschak
97dc6c81b4 graph/path: use NaN internally for negative cycle weights 2019-02-10 06:50:51 +10:30
Dan Kortschak
ee7dd3742a graph/path: indicate negative cycle weights with -Inf instead of NaN
The paths are undefined, but the limit of the path weight is -Inf.
2019-02-10 06:50:51 +10:30
Dan Kortschak
936e3fec9e graph/path: fix negative cycle handling by AllShortest and FloydWarshall
Also remove unjustifiable claim in Bellman-Ford negative cycles example and add
Floyd-Warshall negative cycles example.
2019-02-10 06:50:51 +10:30
Dan Kortschak
5b0db962f3 graph/path: make AllShortest safe for length zero 2018-11-21 07:57:39 +10:30
Dan Kortschak
f5d91d72f8 graph/path: allow incremental path building for Dijkstra 2018-05-24 07:13:55 +09:30
Dan Kortschak
6b03bc22e1 graph: use int64 for node retrieval 2018-03-24 09:21:44 +10:30
kortschak
fa0c5aa7bc all: use golang.org/x/exp/rand instead of math/rand 2017-11-17 11:52:34 +10:30
kortschak
805531d142 all: change capitalization of gonum in license header 2017-11-02 06:54:08 +10:30
kortschak
f818f8f7a9 graph/path: allow Shortest to traverse negative cycles
Also add checks for cases where negative cycles exist but are not marked
to protect against future shortest path function additions.
2017-09-15 08:17:25 +09:30
kortschak
a18d79f600 graph/{internal,path,topo}: factor reverse function out into internal 2017-09-15 07:05:29 +09:30
kortschak
15ecc07d40 graph/path/...: update for int64 IDs 2017-07-02 08:38:42 +09:30
Brendan Tracey
0d639745f1 all: update packages from mat64 to mat.
This mostly changes package name and code, but also fixes a couple of name clashes with the new package names
2017-06-13 10:28:21 -06:00
Brendan Tracey
d33397aa65 all: change import paths 2017-05-23 00:03:03 -06:00
Brendan Tracey
059a6c43f9 graph: imported graph as a subtree 2017-05-23 00:02:59 -06:00