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100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/****************************************************************************
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*
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* Copyright (C) 2012-2019 PX4 Development Team. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/**
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* @file test_int.cpp
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* Tests for integer types.
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*/
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#include <unit_test.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <float.h>
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#include <math.h>
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#include <px4_config.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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typedef union {
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int32_t i;
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int64_t l;
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uint8_t b[8];
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} test_32_64_t;
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class IntTest : public UnitTest
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{
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public:
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virtual bool run_tests();
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private:
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bool math64bitTests();
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bool math3264MixedMathTests();
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};
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bool IntTest::math64bitTests()
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{
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int64_t large = 354156329598;
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int64_t calc = large * 5;
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ut_assert("354156329598 * 5 == 1770781647990", calc == 1770781647990);
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return true;
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}
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bool IntTest::math3264MixedMathTests()
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{
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int32_t small = 50;
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int32_t large_int = 2147483647; // MAX INT value
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uint64_t small_times_large = large_int * (uint64_t)small;
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ut_assert("64bit calculation: 50 * 2147483647 (max int val) == 107374182350", small_times_large == 107374182350);
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return true;
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}
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bool IntTest::run_tests()
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{
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ut_run_test(math64bitTests);
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ut_run_test(math3264MixedMathTests);
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return (_tests_failed == 0);
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}
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ut_declare_test_c(test_int, IntTest)
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