Commit c6891c7f authored by Mikhail Karpenko's avatar Mikhail Karpenko
Browse files

WIP: add time subtraction function

parent ecb78ce2

src/thelper.c

+19 −0
Original line number Original line Diff line number Diff line
@@ -51,3 +51,22 @@ int time_comp(struct timeval *t1, struct timeval *t2) 
	}

	}

	return -1;

	return -1;

}

}



/**

 * Subtract one time value from another and return the difference

 * @param   tv1   time value to subtract from

 * @param   tv2   time value to be subtracted

 * @return  tv1 - tv2

 */

struct timeval time_sub(const struct timeval *tv1, const struct timeval *tv2)

{

	struct timeval ret_val = *tv1;



	ret_val.tv_sec -= 1;

	ret_val.tv_usec += 1000000;

	ret_val.tv_sec -= tv2->tv_sec;

	ret_val.tv_usec -= tv2->tv_usec;

	time_normalize(&ret_val);



	return ret_val;

}

src/thelper.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -26,5 +26,6 @@ 




void time_normalize(struct timeval *tv);

void time_normalize(struct timeval *tv);

int time_comp(struct timeval *t1, struct timeval *t2);

int time_comp(struct timeval *t1, struct timeval *t2);

struct timeval time_sub(const struct timeval *tv1, const struct timeval *tv2);





#endif /* _THELPER_H */
 
#endif /* _THELPER_H */