Man pages matching name memcached_increment_with_initial in section 3:

memcached_increment_with_initial.3.en	debian 10 / libmemcached-dev
memcached_increment_with_initial.3.en	debian 11 / libmemcached-dev
memcached_increment_with_initial.3.en	debian 12 / libmemcached-dev