git subrepo clone --branch=20.41.6 git@github.com:ETLCPP/etl.git components/etl
subrepo: subdir: "components/etl" merged: "be5537ec" upstream: origin: "git@github.com:ETLCPP/etl.git" branch: "20.41.6" commit: "be5537ec" git-subrepo: version: "0.4.9" origin: "???" commit: "???"
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components/etl/test/test_gamma.cpp
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components/etl/test/test_gamma.cpp
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/******************************************************************************
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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/gamma.h"
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#include <array>
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#include <algorithm>
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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 IntGammaEncode = etl::gamma_encode<int>;
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using DoubleGammaEncode = etl::gamma_encode<double>;
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using DoubleGammaDecode = etl::gamma_decode<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) < 0.1;
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}
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};
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//***********************************
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const std::array<int, Size> input1a =
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{
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9
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};
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const std::array<int, Size> result1a =
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{
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0, 0, 0, 1, 1, 2, 4, 5, 7, 9
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};
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std::array<int, Size> output1;
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//***********************************
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const std::array<double, Size> input2a =
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{
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0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0
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};
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const std::array<double, Size> result2a =
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{
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0.0, 0.11, 0.44, 1.00, 1.78, 2.78, 4.00, 5.44, 7.11, 9.00
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};
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const std::array<double, Size> input2b =
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{
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0.0, 0.11, 0.44, 1.00, 1.78, 2.78, 4.00, 5.44, 7.11, 9.00
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};
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const std::array<double, Size> result2b =
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{
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0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0
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};
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std::array<double, Size> output2;
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SUITE(test_gamma)
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{
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//*************************************************************************
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TEST(test_int_gamma_encode)
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{
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IntGammaEncode gamma(0.5, 9);
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std::transform(input1a.begin(), input1a.end(), output1.begin(), gamma);
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bool isEqual = std::equal(output1.begin(), output1.end(), result1a.begin());
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CHECK(isEqual);
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}
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//*************************************************************************
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TEST(test_double_gamma_encode)
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{
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DoubleGammaEncode gamma(0.5, 9.0);
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std::transform(input2a.begin(), input2a.end(), output2.begin(), gamma);
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bool isEqual = std::equal(output2.begin(), output2.end(), result2a.begin(), Compare());
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CHECK(isEqual);
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}
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//*************************************************************************
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TEST(test_double_gamma_decode)
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{
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DoubleGammaDecode gamma(0.5, 9.0);
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std::transform(input2b.begin(), input2b.end(), output2.begin(), gamma);
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bool isEqual = std::equal(output2.begin(), output2.end(), result2b.begin(), Compare());
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CHECK(isEqual);
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}
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};
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}
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