Man pages matching name krb5_eai_to_heim_errno in section 3:

krb5_eai_to_heim_errno.3.en	debian 10 / heimdal-dev
krb5_eai_to_heim_errno.3.en	debian 11 / heimdal-dev
krb5_eai_to_heim_errno.3.en	debian 12 / heimdal-dev
krb5_eai_to_heim_errno.3.en	debian 13 / heimdal-dev