From: Wolfgang Bangerth Date: Thu, 20 Aug 2015 23:26:40 +0000 (-0500) Subject: Clarify one comment. X-Git-Tag: v8.4.0-rc2~561^2~1 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=26d3575225882c5740d3e412f257b8115d0d154b;p=dealii.git Clarify one comment. --- diff --git a/source/fe/mapping_q1.cc b/source/fe/mapping_q1.cc index 6c527afb4b..3de4e63f44 100644 --- a/source/fe/mapping_q1.cc +++ b/source/fe/mapping_q1.cc @@ -513,10 +513,12 @@ MappingQ1::requires_update_flags (const UpdateFlags in) const out |= update_covariant_transformation; // The contravariant transformation - // is a Piola transformation, which + // used in the Piola transformation, which // requires the determinant of the // Jacobi matrix of the transformation. - // Therefore these values have to be + // Because we have no way of knowing here whether the finite + // elements wants to use the contravariant of the Piola + // transforms, we add the JxW values to the list of flags to be // updated for each cell. if (out & update_contravariant_transformation) out |= update_JxW_values;