#ifndef __INC_METIN_II_UTILS_H__
#define __INC_METIN_II_UTILS_H__

#include <math.h>

#define IS_SET(flag, bit)       ((flag) & (bit))
#define SET_BIT(var, bit)       ((var) |= (bit))
#define REMOVE_BIT(var, bit)    ((var) &= ~(bit))
#define TOGGLE_BIT(var, bit)    ((var) = (var) ^ (bit))

inline float DISTANCE_SQRT(long dx, long dy)
{
    return ::sqrt((float)dx * dx + (float)dy * dy);
}

inline int DISTANCE_APPROX(int dx, int dy)
{
    int min, max;

    if (dx < 0)
        dx = -dx;

    if (dy < 0)
        dy = -dy;

    if (dx < dy)
    {
        min = dx;
        max = dy;
    }
    else
    {
        min = dy;
        max = dx;
    }

    // coefficients equivalent to ( 123/128 * max ) and ( 51/128 * min )
    return ((( max << 8 ) + ( max << 3 ) - ( max << 4 ) - ( max << 1 ) +
        ( min << 7 ) - ( min << 5 ) + ( min << 3 ) - ( min << 1 )) >> 8 );
}

#ifndef __WIN32__
inline WORD MAKEWORD(BYTE a, BYTE b)
{
    return static_cast<WORD>(a) | (static_cast<WORD>(b) << 8);
}
#endif

extern void set_global_time(time_t t);
extern time_t get_global_time();

extern int  dice(int number, int size);
extern size_t str_lower(const char * src, char * dest, size_t dest_size);

extern void skip_spaces(char **string);

extern const char * one_argument(const char *argument, char *first_arg, size_t first_size);
extern const char * two_arguments(const char *argument, char *first_arg, size_t first_size, char *second_arg, size_t second_size);
extern const char * three_arguments(const char * argument, char * first_arg, size_t first_size, char * second_arg, size_t second_size, char * third_flag, size_t third_size);
extern const char * first_cmd(const char *argument, char *first_arg, size_t first_arg_size, size_t *first_arg_len_result);
extern void split_argument(const char *argument, std::vector<std::string> & vecArgs);

extern int CalculateDuration(int iSpd, int iDur);

extern float gauss_random(float avg = 0, float sigma = 1);

extern int parse_time_str(const char* str);

extern bool WildCaseCmp(const char *w, const char *s);

#endif /* __INC_METIN_II_UTILS_H__ */