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8a782cc7f1
* Add more constexpr to ctors * Adjust operator!=() in fixed_iterator.h Instead of taking an iterator by reference, take it by value as done in the other operators and overloads. * Initialize move_iterator() current member Prevent indeterminate values * Fix fixed_iterator::operator* return type fixed_iterator::operator* returned value_type by value, so writes like *it = ... modified a temporary rather than the underlying location. This broke the iterator’s intended use (e.g., writing to a fixed register/memory location). Now returning iterator_traits<TIterator>::reference instead (const and non-const overloads). * Fixed move_iterator::operator+= and operator-= return type move_iterator::operator+= / operator-= returned by value, but RandomAccessIterator requirements (and std::move_iterator) expect these to return move_iterator&. Returning by value also added an unnecessary copy and could break generic code expecting reference semantics.
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Copyright(c) 2021 John Wellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#include "unit_test_framework.h"
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#include "etl/rescale.h"
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#include <algorithm>
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#include <array>
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#include <math.h>
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namespace
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{
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constexpr size_t Size = 10UL;
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using CharIntRescale = etl::rescale<char, int>;
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using CharDoubleRescale = etl::rescale<char, double>;
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struct Compare
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{
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bool operator()(double lhs, double rhs) const
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{
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return fabs(lhs - rhs) < 1.0;
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}
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};
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//***********************************
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const std::array<char, Size> input1 = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
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//***********************************
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const std::array<int, Size> result1 = {40000, 40211, 40422, 40633, 40844, 41055, 41266, 41477, 41688, 41900};
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std::array<int, Size> output1;
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const std::array<double, Size> result2 = {40000.0, 40211.0, 40422.0, 40633.0, 40844.0, 41055.0, 41266.0, 41477.0, 41688.0, 41900.0};
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std::array<double, Size> output2;
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SUITE(test_rescale)
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{
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//*************************************************************************
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TEST(test_char_int_rescale)
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{
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CharIntRescale rescale(10, 19, 40000, 41900);
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std::transform(input1.begin(), input1.end(), output1.begin(), rescale);
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bool isEqual = std::equal(output1.begin(), output1.end(), result1.begin());
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CHECK(isEqual);
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}
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//*************************************************************************
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TEST(test_char_double_rescale)
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{
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CharDoubleRescale rescale(10, 19, 40000.0, 41900.0);
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std::transform(input1.begin(), input1.end(), output2.begin(), rescale);
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bool isEqual = std::equal(output2.begin(), output2.end(), result2.begin(), Compare());
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CHECK(isEqual);
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}
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#if ETL_USING_CPP14
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//*************************************************************************
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TEST(test_rescale_constexpr)
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{
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constexpr etl::rescale<int, int> rs(0, 100, 0, 1000);
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static_assert(rs(50) == 500, "constexpr rescale");
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CHECK(true);
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}
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#endif
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}
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} // namespace
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