combination.h

#ifndef BITCOIN_INCLUDE_COMBINATION_H
#define BITCOIN_INCLUDE_COMBINATION_H

struct Combination {
	int n; /* total number of elements */
	int r; /* number of elements to select from total */
	int *k; /* current state */
};

void Combination_create(struct Combination *c, int n, int r);
void Combination_destroy(struct Combination *c);
int Combination_next(struct Combination *c);

#endif