Ichthyostega
24b3bec4be
Doxygen will only process files with a @file documentation comment. Up to now, none of our test code has such a comment, preventing the cross-links to unit tests from working. This is unfortunate, since unit tests, and even the code comments there, can be considered as the most useful form of technical documentation. Thus I'll start an initiative to fill in those missing comments automatically
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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UtilFloorwrap(Test) - verify integer scale remainder wrapping
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Copyright (C) Lumiera.org
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2011, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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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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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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/** @file util-floorwrap-test.cpp
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** unit test §§TODO§§
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*/
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#include "lib/test/run.hpp"
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#include "lib/test/test-helper.hpp"
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#include "lib/format-string.hpp"
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#include "lib/format-cout.hpp"
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#include "lib/util-quant.hpp"
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#include <cmath>
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#include <boost/lexical_cast.hpp>
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using ::Test;
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using boost::lexical_cast;
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using util::typeStr;
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using util::floorwrap;
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namespace util {
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namespace test {
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/***********************************************************************//**
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* @test Verify a custom built integer scale division and wrapping function.
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* This function is relevant for decimating values into a given scale,
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* like splitting time measurements in hours, minutes, seconds etc.
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* Basically, in Lumiera the quantisation into a scale is always
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* done with the same orientation, irrespective of the zero point
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* on the given scale. Contrast this to the built-in integer
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* division and modulo operators working symmetrical to zero.
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* @see util.hpp
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* @see TimeFormats_test
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*/
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class UtilFloorwrap_test : public Test
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{
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virtual void
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run (Arg arg)
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{
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int range = 0 < arg.size()? lexical_cast<int> (arg[0]) : 12;
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int scale = 1 < arg.size()? lexical_cast<int> (arg[1]) : 4;
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checkWrap (range, scale);
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checkWrap (range, -scale);
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checkWrap<long> (range, scale);
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checkWrap<long> (range, -scale);
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}
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template<typename I>
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void
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checkWrap (I range, I scale)
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{
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cout << "--------"<< typeStr<I>()
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<< "--------"<< range<<"/"<<scale<<endl;
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for (I i=range; i >=-range; --i)
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showWrap (i, scale);
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}
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template<typename I>
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void
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showWrap (I val, I scale)
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{
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IDiv<I> wrap = floorwrap(val,scale);
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cout << _Fmt ("% 3d /% 1d =% 1d %% =% d floor=% 4.1f wrap = (%2d,%2d)\n")
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% val % scale % (val/scale)
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% (val%scale) % floor(double(val)/scale)
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% wrap.quot % wrap.rem;
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}
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};
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LAUNCHER (UtilFloorwrap_test, "unit common");
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}} // namespace util::test
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