NSEC
nsec = (end.tv_sec * NSEC + end.tv_nsec) / iter; \
__func__, nsec, NSEC / nsec, NSEC / nsec * size); \
nsec = (end.tv_sec * NSEC + end.tv_nsec); \
__func__, nsec, NSEC / nsec); \
#if NSEC > 0
#if NSEC > 0
#if NSEC > 0
#if NSEC > 0
#if NSEC > 0