122 lines
2.7 KiB
Plaintext
122 lines
2.7 KiB
Plaintext
/*
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* This file is part of libsidplayfp, a SID player engine.
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*
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* Copyright (C) 2014-2015 Leandro Nini
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "UnitTest++/UnitTest++.h"
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#include "UnitTest++/TestReporter.h"
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#include <limits>
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#include "../src/builders/residfp-builder/residfp/Spline.h"
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using namespace UnitTest;
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using namespace reSIDfp;
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const unsigned int OPAMP_SIZE = 33;
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const Spline::Point opamp_voltage[OPAMP_SIZE] =
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{
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{ 0.81, 10.31 }, // Approximate start of actual range
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{ 2.40, 10.31 },
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{ 2.60, 10.30 },
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{ 2.70, 10.29 },
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{ 2.80, 10.26 },
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{ 2.90, 10.17 },
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{ 3.00, 10.04 },
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{ 3.10, 9.83 },
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{ 3.20, 9.58 },
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{ 3.30, 9.32 },
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{ 3.50, 8.69 },
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{ 3.70, 8.00 },
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{ 4.00, 6.89 },
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{ 4.40, 5.21 },
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{ 4.54, 4.54 }, // Working point (vi = vo)
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{ 4.60, 4.19 },
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{ 4.80, 3.00 },
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{ 4.90, 2.30 }, // Change of curvature
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{ 4.95, 2.03 },
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{ 5.00, 1.88 },
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{ 5.05, 1.77 },
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{ 5.10, 1.69 },
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{ 5.20, 1.58 },
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{ 5.40, 1.44 },
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{ 5.60, 1.33 },
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{ 5.80, 1.26 },
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{ 6.00, 1.21 },
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{ 6.40, 1.12 },
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{ 7.00, 1.02 },
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{ 7.50, 0.97 },
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{ 8.50, 0.89 },
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{ 10.00, 0.81 },
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{ 10.31, 0.81 }, // Approximate end of actual range
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};
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SUITE(Spline)
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{
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TEST(TestMonotonicity)
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{
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Spline s(opamp_voltage, OPAMP_SIZE);
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double old = std::numeric_limits<double>::max();
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for (double x = 0.0; x < 12.0; x+=0.01)
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{
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Spline::Point out = s.evaluate(x);
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CHECK(out.x <= old);
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old = out.x;
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}
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}
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TEST(TestPoints)
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{
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Spline s(opamp_voltage, OPAMP_SIZE);
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for (int i = 0; i < OPAMP_SIZE; i++)
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{
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Spline::Point out = s.evaluate(opamp_voltage[i].x);
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CHECK_EQUAL(opamp_voltage[i].y, out.x);
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}
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}
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TEST(TestInterpolateOutsideBounds)
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{
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const Spline::Point values[5] = {
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{ 10, 15 },
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{ 15, 20 },
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{ 20, 30 },
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{ 25, 40 },
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{ 30, 45 },
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};
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Spline s(values, 5);
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Spline::Point out;
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out = s.evaluate(5);
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CHECK_CLOSE(6.66667, out.x, 0.00001);
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out = s.evaluate(40);
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CHECK_CLOSE(75.0, out.x, 0.00001);
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}
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}
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