posix time - Robuta Search

https://www.boost.org/doc/libs/1_87_0/libs/icl/doc/html/doxygen/interval_container_library_reference/structboost_1_1icl_1_1size__type__of_3_01boost_1_1posix__time_1_1ptime_01_4.html

Struct size_type_of

posix time struct size type boost

https://www.boost.org/doc/libs/1_74_0/libs/icl/doc/html/boost/icl/has_diff_idm46063486101072.html

Struct has_difference

posix time struct difference boost ptime

https://www.boost.org/doc/libs/1_74_0/libs/icl/doc/html/boost/icl/size_typ_idm46063486078928.html

Struct size_type_of

posix time struct size type boost