# igraph/igraph

fixed igraph_is_separator() for |V|-1 and |V| unique vertices in the …

`…input vertex set`
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1 parent 32a743f commit f3b9f14859fb1b01f567ecc27d18c8daea954c78 ntamas committed Sep 1, 2016
Showing with 12 additions and 3 deletions.
1. +9 −0 examples/simple/igraph_is_separator.c
2. +3 −3 src/separators.c
 @@ -40,6 +40,15 @@ int main() { /* Same graph, but another vertex */ igraph_is_separator(&graph, igraph_vss_1(6), &result); if (result) FAIL("Non-center of star graph failed.", 2); + + /* Same graph, all vertices but the center */ + igraph_is_separator(&graph, igraph_vss_seq(1, 9), &result); + if (result) FAIL("All non-central vertices of star graph failed.", 5); + igraph_destroy(&graph); + + /* Same graph, all vertices */ + igraph_is_separator(&graph, igraph_vss_seq(0, 9), &result); + if (result) FAIL("All vertices of star graph failed.", 6); igraph_destroy(&graph); /* Karate club */
 @@ -47,7 +47,7 @@ int igraph_i_is_separator(const igraph_t *graph, long int start=0; if (IGRAPH_VIT_SIZE(*vit) >= no_of_nodes-1) { - /* Just need to check that we really have n-1 vertices in it */ + /* Just need to check that we really have at least n-1 vertices in it */ igraph_vector_bool_t hit; long int nohit=0; IGRAPH_CHECK(igraph_vector_bool_init(&hit, no_of_nodes)); @@ -63,8 +63,8 @@ int igraph_i_is_separator(const igraph_t *graph, } igraph_vector_bool_destroy(&hit); IGRAPH_FINALLY_CLEAN(1); - if (nohit == no_of_nodes-1) { - *res = 1; + if (nohit >= no_of_nodes-1) { + *res = 0; return 0; } }

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