test_int.cpp
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/****************************************************************************
*
* Copyright (C) 2012-2019 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name PX4 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 COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
****************************************************************************/
/**
* @file test_int.cpp
* Tests for integer types.
*/
#include <unit_test.h>
#include <errno.h>
#include <fcntl.h>
#include <float.h>
#include <math.h>
#include <px4_platform_common/px4_config.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
typedef union {
int32_t i;
int64_t l;
uint8_t b[8];
} test_32_64_t;
class IntTest : public UnitTest
{
public:
virtual bool run_tests();
private:
bool math64bitTests();
bool math3264MixedMathTests();
};
bool IntTest::math64bitTests()
{
int64_t large = 354156329598;
int64_t calc = large * 5;
ut_assert("354156329598 * 5 == 1770781647990", calc == 1770781647990);
return true;
}
bool IntTest::math3264MixedMathTests()
{
int32_t small = 50;
int32_t large_int = 2147483647; // MAX INT value
uint64_t small_times_large = large_int * (uint64_t)small;
ut_assert("64bit calculation: 50 * 2147483647 (max int val) == 107374182350", small_times_large == 107374182350);
return true;
}
bool IntTest::run_tests()
{
ut_run_test(math64bitTests);
ut_run_test(math3264MixedMathTests);
return (_tests_failed == 0);
}
ut_declare_test_c(test_int, IntTest)