Man pages matching name number::tolerant::constant in section 3pm:

Number::Tolerant::Constant.3pm.en	debian 10 / libnumber-tolerant-perl
Number::Tolerant::Constant.3pm.en	debian 11 / libnumber-tolerant-perl
Number::Tolerant::Constant.3pm.en	debian 12 / libnumber-tolerant-perl