53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
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#ifndef INCLUDED_C_LAZYPRIMMST_H
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#define INCLUDED_C_LAZYPRIMMST_H
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#ifndef INCLUDED_C_EDGEWEIGHTEDGRAPH_H
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#include <c_EdgeWeightedGraph.h>
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#endif /*INCLUDED_C_EDGEWEIGHTEDGRAPH_H*/
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#ifndef INCLUDED_C_VERTEXIDLIST_H
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#include <c_VertexIdList.h>
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#endif /*INCLUDED_C_VERTEXIDLIST_H*/
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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typedef struct {
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c_bool_t* marked; /* Visited tracking array (size of graph->V) */
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c_VertexIdList_t mst_edges; /* List of global edge_ids included in the MST */
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double weight; /* Total total minimum weight summation of the MST */
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c_Allocator_t allocator; /* Deep copy of the user-provided allocator */
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} c_LazyPrimMST_t;
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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/**
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* @brief Computes a minimum spanning tree of an edge-weighted graph using Lazy Prim's algorithm.
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* @param allocator Explicit allocator context used to allocate internal search tracking objects
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*/
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c_err_t c_LazyPrimMST_Init(c_LazyPrimMST_t* self, c_EdgeWeightedGraph_t* graph, c_Allocator_t* allocator);
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/**
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* @brief Releases internal tracking buffers
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*/
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void c_LazyPrimMST_Destroy(c_LazyPrimMST_t* self);
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/**
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* @brief Gets a copy of the edge ids included in the Minimum Spanning Tree.
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* @param out_edges An initialized c_VertexIdList_t container to collect the sequence.
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*/
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c_err_t c_LazyPrimMST_GetEdges(c_LazyPrimMST_t* self, c_VertexIdList_t* out_edges);
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/**
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* @brief Returns the total total minimum weight summation of the MST
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*/
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C_STATIC_FORCE_INLINE
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double c_LazyPrimMST_Weight(c_LazyPrimMST_t* self) {
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return self ? self->weight : 0.0;
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}
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#endif /*INCLUDED_C_LAZYPRIMMST_H*/
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