Robuta

https://www.boost.org/doc/libs/1_53_0/doc/html/boost/accumulators/extract/weighted_sum_kahan.html

https://www.boost.org/doc/libs/1_51_0/doc/html/boost/accumulators/tag/weighted_sum_of_variates.html

https://www.boost.org/doc/libs/1_53_0/doc/html/boost/accumulators/feature_of_tag_idp27395760.html

https://www.boost.org/doc/libs/1_80_0/doc/html/boost/accumulators/extract/weigh_1_3_2_6_3_53_1_1_3_2.html

https://www.boost.org/doc/libs/1_53_0/doc/html/boost/accumulators/as_feature_tag_idp27394784.html

https://www.boost.org/doc/libs/1_51_0/doc/html/boost/accumulators/tag/weighted_sum.html