Man pages matching name fdopendir in section 3:

fdopendir.3.de	debian 10 / manpages-de-dev
fdopendir.3.en	debian 10 / manpages-dev
fdopendir.3.ja	debian 10 / manpages-ja-dev
fdopendir.3.de	debian 11 / manpages-de-dev
fdopendir.3.en	debian 11 / manpages-dev
fdopendir.3.es	debian 11 / manpages-es-dev
fdopendir.3.fr	debian 11 / manpages-fr-dev
fdopendir.3.ja	debian 11 / manpages-ja-dev
fdopendir.3.de	debian 12 / manpages-de-dev
fdopendir.3.en	debian 12 / manpages-dev
fdopendir.3.es	debian 12 / manpages-es-dev
fdopendir.3.fr	debian 12 / manpages-fr-dev
fdopendir.3.ja	debian 12 / manpages-ja-dev
fdopendir.3.ru	debian 12 / manpages-ru-dev