From e30bd4723a0e93518edf2324e22bab63e0b9a390 Mon Sep 17 00:00:00 2001 From: Wolfgang Bangerth Date: Thu, 15 Jun 2000 07:41:23 +0000 Subject: [PATCH] Augment docs. git-svn-id: https://svn.dealii.org/trunk@3020 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/deal.II/include/fe/fe.h | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/deal.II/deal.II/include/fe/fe.h b/deal.II/deal.II/include/fe/fe.h index 24c6cb1fd9..d84002b32e 100644 --- a/deal.II/deal.II/include/fe/fe.h +++ b/deal.II/deal.II/include/fe/fe.h @@ -1041,17 +1041,26 @@ class FiniteElement : public FiniteElementBase const Point &p) const = 0; /** - * Return the gradient of the #i#th shape - * function at the point #p#. - * #p# is a point on the reference element, + * Return the gradient of the + * #i#th shape function at the + * point #p#. #p# is a point on + * the reference element, and + * likewise the gradient is the + * gradient on the unit cell with + * respect to unit cell + * coordinates. */ virtual Tensor<1,dim> shape_grad (const unsigned int i, const Point &p) const = 0; /** - * Return the tensor of second derivatives - * of the #i#th shape function at - * point #p# on the unit cell. + * Return the tensor of second + * derivatives of the #i#th shape + * function at point #p# on the + * unit cell. The derivatives are + * derivatives on the unit cell + * with respect to unit cell + * coordinates. */ virtual Tensor<2,dim> shape_grad_grad (const unsigned int i, const Point &p) const = 0; -- 2.39.5