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Test: lac/linear_operator_10: disable floating point exceptions #15470

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Jun 25, 2023
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Test: lac/linear_operator_10: disable floating point exceptions #15470

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10 changes: 10 additions & 0 deletions tests/lac/linear_operator_10.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,16 @@ test_preconditioner(const MATRIX & A,
const VECTOR & b,
const ADDITIONAL_DATA &data = ADDITIONAL_DATA())
{
// This test might trigger spurious floating point exceptions in Trilinos
// despite functioning properly. Simply disable floating point exceptions
// again (after they had been enabled int tests.h).
#if defined(DEBUG) && defined(DEAL_II_HAVE_FP_EXCEPTIONS)
{
const int current_fe_except = fegetexcept();
fedisableexcept(current_fe_except);
}
#endif

const auto lo_A = linear_operator<VECTOR>(A);
// Note: The above should be equivalent to the following:
//
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