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/*
* Copyright (c) 2016, Michael Feathers, James Grenning, Bas Vodde
* and Arnd Strube. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the <organization> nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE EARLIER MENTIONED AUTHORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "CppUTest/CommandLineTestRunner.h"
#include "CppUTest/TestHarness.h"
#include "CppUTest/TestRegistry.h"
#ifdef CPPUTEST_HAVE_FENV
#include "CppUTestExt/IEEE754ExceptionsPlugin.h"
/*
* To see a demonstration of tests failing as a result of IEEE754ExceptionsPlugin
* picking up floating point errors, run the test executable with the -ri option.
*
*/
extern "C" {
#include <fenv.h>
}
#include <limits>
static volatile float f;
TEST_GROUP(FE_Demo)
{
void setup()
{
IEEE754ExceptionsPlugin::disableInexact();
}
};
IGNORE_TEST(FE_Demo, should_fail_when__FE_DIVBYZERO__is_set)
{
f = 1.0f;
CHECK((f /= 0.0f) >= std::numeric_limits<float>::infinity());
}
IGNORE_TEST(FE_Demo, should_fail_when__FE_UNDERFLOW__is_set)
{
f = 0.01f;
while (f > 0.0f) f *= f;
CHECK(f == 0.0f);
}
IGNORE_TEST(FE_Demo, should_fail_when__FE_OVERFLOW__is_set)
{
f = 1000.0f;
while (f < std::numeric_limits<float>::infinity()) f *= f;
CHECK(f >= std::numeric_limits<float>::infinity());
}
IGNORE_TEST(FE_Demo, should_fail_when__FE_INEXACT____is_set)
{
IEEE754ExceptionsPlugin::enableInexact();
f = 10.0f;
DOUBLES_EQUAL((double) (f / 3.0f), (double) 3.333f, (double) 0.001f);
}
TEST(FE_Demo, should_succeed_when_no_flags_are_set)
{
CHECK(5.0f == 15.0f / 3.0f);
}
#endif
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