LttTime res;
//res.tv_sec = t1/(double)NANOSECONDS_PER_SECOND;
res.tv_sec = (guint64)(t1 * DOUBLE_SHIFT_CONST_DIV) >> DOUBLE_SHIFT;
LttTime res;
//res.tv_sec = t1/(double)NANOSECONDS_PER_SECOND;
res.tv_sec = (guint64)(t1 * DOUBLE_SHIFT_CONST_DIV) >> DOUBLE_SHIFT;