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From: Joel Young (jdy_at_[hidden])
Date: 2001-09-03 08:48:31


With gcc-2.95.3, if the "edge_weight_t" is "unsigned int" in the
edge properties, than with dijkstra_shortest_path I get the following

.../boost_1_24_0/boost/graph/dijkstra_shortest_paths.hpp:189: instantiated from here
.../boost_1_24_0/boost/graph/relax.hpp:65: call of overloaded `abs (unsigned int)' is ambiguous
/usr/include/stdlib.h:699: candidates are: int abs(int)
.../include/g++-3/cstdlib:17: long int abs(long int)
.../include/g++-3/cmath:40: float abs(float)
.../include/g++-3/cmath:42: double abs(double)
.../include/g++-3/cmath:72: long double abs(long double)

If I change the edge_weight_t to "long int" for example it build fine.
Must edge weights be signed types?

Also, it would be nice if there was an example on using the
dijkstra_shortest_paths with no external maps.


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