bachelor/src/questions/include/qwiener.h

#ifndef _QA_WIENER_H_
#define _QA_WIENER_H
/**
 * Fractions made of bignums.
 */
typedef struct bigfraction {
  BIGNUM* h;   /**< numerator */
  BIGNUM* k;   /**< denominator */
} bigfraction_t;


typedef struct cf {
  bigfraction_t fs[3];
  short i;
  bigfraction_t x;
  BIGNUM* a;
  BN_CTX* ctx;
} cf_t;


/* continued fractions utilities. */
cf_t* cf_new(void);

cf_t* cf_init(cf_t *f, BIGNUM *num, BIGNUM *b);

void cf_free(cf_t* f);

bigfraction_t* cf_next(cf_t *f);


extern struct qa_question WienerQuestion;

#endif /* _QA_WIENER_H_ */