add
⚠️ Deprecated ⚠️
This is deprecated since version 2.62.
#GTimeVal is not year-2038-safe. Use guint64
for representing microseconds since the epoch, or use #GDateTime.
Adds the given number of microseconds to @time_. @microseconds can also be negative to decrease the value of @time_.
Parameters
microseconds
number of microseconds to add to @time