Man pages matching name string::compare::constanttime in section 3pm:

String::Compare::ConstantTime.3pm.en	debian 10 / libstring-compare-constanttime-perl
String::Compare::ConstantTime.3pm.en	debian 11 / libstring-compare-constanttime-perl
String::Compare::ConstantTime.3pm.en	debian 12 / libstring-compare-constanttime-perl