Man pages matching name ftruncate64 in section 2:

ftruncate64.2.en	debian 10 / manpages-dev
ftruncate64.2.ja	debian 10 / manpages-ja-dev
ftruncate64.2.pl	debian 10 / manpages-pl-dev
ftruncate64.2.en	debian 11 / manpages-dev
ftruncate64.2.ja	debian 11 / manpages-ja-dev
ftruncate64.2.en	debian 12 / manpages-dev
ftruncate64.2.ja	debian 12 / manpages-ja-dev