// 
// Generic utility functions
//

#define UTIL_GOAL_MIN   0
#define UTIL_GOAL_MAX   1
#define UTIL_GOAL_MEET  2
#define UTIL_GOAL_AVOID 3

#define UTIL_SCALE_LIN  0
#define UTIL_SCALE_LOG  1

typedef struct utility_s * utility;

utility utility_create(float _target, int _goal, int _scale);
void utility_free(utility _u);

float utility_evaluate(utility _u, float _x);