Man pages matching name cfgetispeed in section 3:

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