Man pages matching name matherr in section 3:

matherr.3.en	debian 10 / manpages-dev
matherr.3.ja	debian 10 / manpages-ja-dev
matherr.3.en	debian 11 / manpages-dev
matherr.3.ja	debian 11 / manpages-ja-dev
matherr.3.en	debian 12 / manpages-dev
matherr.3.ja	debian 12 / manpages-ja-dev
matherr.3.ru	debian 12 / manpages-ru-dev