Man pages matching name setjmp in section 3:

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