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Test grid/closest_point: guard against roundoff error #16812

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Mar 29, 2024
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Test grid/closest_point: guard against roundoff error #16812

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3 changes: 2 additions & 1 deletion tests/grid/closest_point.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,8 @@ test(const ReferenceCell &reference_cell,
for (const unsigned int vertex_no : reference_cell.vertex_indices())
AssertThrow(distance_square <=
p.distance_square(
reference_cell.template vertex<dim>(vertex_no)),
reference_cell.template vertex<dim>(vertex_no)) *
(1. + 2. * std::numeric_limits<double>::epsilon()),
ExcInternalError());

// Also generate a lot of points in the unit cell - we should be closer than
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