Line data    Source code

       1              : // Copyright 2024, UChicago Argonne, LLC
       2              : // All Rights Reserved
       3              : // Software Name: NEML2 -- the New Engineering material Model Library, version 2
       4              : // By: Argonne National Laboratory
       5              : // OPEN SOURCE LICENSE (MIT)
       6              : //
       7              : // Permission is hereby granted, free of charge, to any person obtaining a copy
       8              : // of this software and associated documentation files (the "Software"), to deal
       9              : // in the Software without restriction, including without limitation the rights
      10              : // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      11              : // copies of the Software, and to permit persons to whom the Software is
      12              : // furnished to do so, subject to the following conditions:
      13              : //
      14              : // The above copyright notice and this permission notice shall be included in
      15              : // all copies or substantial portions of the Software.
      16              : //
      17              : // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      18              : // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      19              : // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      20              : // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      21              : // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      22              : // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      23              : // THE SOFTWARE.
      24              : 
      25              : #include "neml2/tensors/functions/discretization/interpolate.h"
      26              : #include "neml2/tensors/functions/sum.h"
      27              : #include "neml2/misc/assertions.h"
      28              : 
      29              : namespace neml2::discretization
      30              : {
      31              : Tensor
      32            4 : interpolate(const Tensor & elem_dofs, const Tensor & basis)
      33              : {
      34            4 :   neml_assert(elem_dofs.batch_dim() >= 2,
      35              :               "fem_interpolate: batch dimension of elem_dofs must at least 2, got ",
      36            4 :               elem_dofs.batch_dim());
      37            4 :   neml_assert(basis.batch_dim() >= 3,
      38              :               "interpolate: base dimension of basis must be at least 3, got ",
      39            4 :               basis.batch_dim());
      40            4 :   neml_assert(elem_dofs.batch_size(-2) == basis.batch_size(-3),
      41              :               "interpolate: elem_dofs implies Nelem = ",
      42            8 :               elem_dofs.batch_size(-2),
      43              :               ", but basis implies Nelem = ",
      44            8 :               basis.batch_size(-3));
      45            4 :   neml_assert(elem_dofs.batch_size(-1) == basis.batch_size(-2),
      46              :               "interpolate: elem_dofs implies Ndofe = ",
      47            8 :               elem_dofs.batch_size(-1),
      48              :               ", but basis implies Ndofe = ",
      49            8 :               basis.batch_size(-2));
      50              : 
      51            4 :   return batch_sum(elem_dofs.batch_unsqueeze(-1).base_unsqueeze_to(basis.base_dim()) * basis, -2);
      52              : }
      53              : } // namespace neml2::discretization