52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
#ifndef INCLUDED_C_DIRECTEDEULERIANCYCLE_H
|
|
#define INCLUDED_C_DIRECTEDEULERIANCYCLE_H
|
|
|
|
#ifndef INCLUDED_C_DIGRAPH_H
|
|
#include <c_Digraph.h>
|
|
#endif /*INCLUDED_C_DIGRAPH_H*/
|
|
|
|
|
|
#ifndef INCLUDED_C_VERTEXIDLIST_H
|
|
#include <c_VertexIdList.h>
|
|
#endif /*INCLUDED_C_VERTEXIDLIST_H*/
|
|
|
|
|
|
/* ------------------------------------------------------------------------------------------------------------------ */
|
|
/* */
|
|
|
|
typedef struct {
|
|
c_VertexIdList_t cycle; /* Stores the Eulerian cycle path sequence if found */
|
|
c_Allocator_t allocator; /* Deep copy of the user-provided allocator */
|
|
} c_DirectedEulerianCycle_t;
|
|
|
|
/* ------------------------------------------------------------------------------------------------------------------ */
|
|
/* */
|
|
|
|
/**
|
|
* @brief Computes a directed Eulerian cycle in a digraph, if one exists.
|
|
* @param allocator Explicit allocator context used to allocate internal routing arrays
|
|
*/
|
|
c_err_t c_DirectedEulerianCycle_Init(c_DirectedEulerianCycle_t* self, c_Digraph_t* graph, c_Allocator_t* allocator);
|
|
|
|
/**
|
|
* @brief Releases internal tracking buffers
|
|
*/
|
|
void c_DirectedEulerianCycle_Destroy(c_DirectedEulerianCycle_t* self);
|
|
|
|
/**
|
|
* @brief Does the digraph have a directed Eulerian cycle?
|
|
*/
|
|
C_STATIC_FORCE_INLINE c_bool_t c_DirectedEulerianCycle_HasCycle(c_DirectedEulerianCycle_t* self) {
|
|
if (!self) return C_FALSE;
|
|
return !c_VertexIdList_IsEmpty(&self->cycle);
|
|
}
|
|
|
|
/**
|
|
* @brief Gets the vertices on the directed Eulerian cycle.
|
|
* @param out_cycle An initialized c_VertexIdList_t container to collect the sequence.
|
|
*/
|
|
c_err_t c_DirectedEulerianCycle_GetCycle(c_DirectedEulerianCycle_t* self, c_VertexIdList_t* out_cycle);
|
|
|
|
|
|
#endif /*INCLUDED_C_DIRECTEDEULERIANCYCLE_H*/
|