FpeMonitorTests.cpp

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// This file is part of the Acts project.
//
// Copyright (C) 2022 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#include <boost/test/unit_test.hpp>

#include "Acts/Utilities/FpeMonitor.hpp"

#include <cmath>
#include <cstdio>
#include <iostream>
#include <limits>

namespace utf = boost::unit_test;

namespace Acts::Test {

BOOST_AUTO_TEST_SUITE(FpeMonitorTest)

#if defined(_FE_INVALID)
BOOST_AUTO_TEST_CASE(Invalid) {
  {
    FpeMonitor mon;
    volatile const double x = -1;
    printf("y = %f\n", std::sqrt(x));
  }
}
#endif

#if defined(_FE_DIVBYZERO)
BOOST_AUTO_TEST_CASE(DivByZero) {
  {
    FpeMonitor mon;
    volatile double z = 0;
    volatile double x = 1 / z;
    std::cout << "x: " << x << std::endl;
  }
}
#endif

#if defined(_FE_OVERFLOW)
BOOST_AUTO_TEST_CASE(Overflow) {
  {
    FpeMonitor mon;
    volatile float v = 0;
    volatile double w = std::numeric_limits<double>::max();
    v = 2 * w;
    std::cout << v << std::endl;
  }
}
#endif

BOOST_AUTO_TEST_SUITE_END()

}  // namespace Acts::Test