SpECTRE Documentation Coverage Report
Current view: top level - PointwiseFunctions/GeneralRelativity/Surfaces - UnitNormalOneForm.hpp Hit Total Coverage
Commit: 965048f86d23c819715b3af1ca3f880c8145d4bb Lines: 2 3 66.7 %
Date: 2024-05-16 17:00:40
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          Line data    Source code
       1           0 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : #pragma once
       5             : 
       6             : #include "DataStructures/Tensor/TypeAliases.hpp"
       7             : 
       8             : /// \cond
       9             : class DataVector;
      10             : namespace gsl {
      11             : template <typename>
      12             : struct not_null;
      13             : }  // namespace gsl
      14             : /// \endcond
      15             : 
      16             : namespace gr::surfaces {
      17             : /// @{
      18             : /// \ingroup SurfacesGroup
      19             : /// \brief Computes normalized unit normal one-form to a Strahlkorper.
      20             : ///
      21             : /// \details The input argument `normal_one_form` \f$n_i\f$ is the
      22             : /// unnormalized surface one-form; it depends on a Strahlkorper but
      23             : /// not on a metric.  The input argument `one_over_one_form_magnitude`
      24             : /// is \f$1/\sqrt{g^{ij}n_i n_j}\f$, which can be computed using (one
      25             : /// over) the `magnitude` function.
      26             : template <typename Frame>
      27           1 : void unit_normal_one_form(gsl::not_null<tnsr::i<DataVector, 3, Frame>*> result,
      28             :                           const tnsr::i<DataVector, 3, Frame>& normal_one_form,
      29             :                           const DataVector& one_over_one_form_magnitude);
      30             : 
      31             : template <typename Frame>
      32           1 : tnsr::i<DataVector, 3, Frame> unit_normal_one_form(
      33             :     const tnsr::i<DataVector, 3, Frame>& normal_one_form,
      34             :     const DataVector& one_over_one_form_magnitude);
      35             : /// @}
      36             : }  // namespace gr::surfaces

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