doi:10.3390/math8122219engDelgado Gracia, J.Compensated evaluation of tensor product surfaces in CAGDART-2020-121689In computer-aided geometric design, a polynomial surface is usually represented in Bézier form. The usual form of evaluating such a surface is by using an extension of the de Casteljau algorithm. Using error-free transformations, a compensated version of this algorithm is presented, which improves the usual algorithm in terms of accuracy. A forward error analysis illustrating this fact is developed.2020http://zaguan.unizar.es/record/9744710.3390/math8122219http://zaguan.unizar.es/record/97447oai:zaguan.unizar.es:97447info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragóninfo:eu-repo/grantAgreement/ES/DGA-FEDER/E41-17Rinfo:eu-repo/grantAgreement/ES/MCIU-AEI/PGC2018-096321-B-I00MATHEMATICS 8, 12 (2020), 2219 [1-12]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess