The 64–bit system interfaces are inherently more capable than
some of their 32–bit equivalents. Application programmers concerned
about year 2038 problems (when 32–bit time_t
runs out of
time) can use the 64–bit time_t
. While 2038 seems a long
way off, applications that do computations concerning future events, such
as mortgages, might require the expanded time capability.