#ifndef INCLUDED_C_EDGE_H
#define INCLUDED_C_EDGE_H

#ifndef INCLUDED_C_TYPES_H
#include <c_Types.h>
#endif /*INCLUDED_C_TYPES_H*/


/* ------------------------------------------------------------------------------------------------------------------ */
/*  */

typedef struct {
    c_size_t v;       /* One endpoint vertex */
    c_size_t w;       /* The other endpoint vertex */
    double   weight;  /* Edge weight value */
} c_Edge_t;

#define C_EDGE_SENTINEL ((c_size_t)-1)

/* Inline helper methods for c_Edge_t */
C_STATIC_FORCE_INLINE
c_size_t c_Edge_Either(const c_Edge_t* edge) {
    return edge ? edge->v : 0;
}

C_STATIC_FORCE_INLINE
c_size_t c_Edge_Other(const c_Edge_t* edge, c_size_t v) {
    if (!edge) return 0;
    return (edge->v == v) ? edge->w : edge->v;
}

C_STATIC_FORCE_INLINE double c_Edge_Weight(const c_Edge_t* edge) {
    return edge ? edge->weight : 0.0;
}

#endif /*INCLUDED_C_EDGE_H*/