Ichthyostega
e3b6b87e93
Signed and unsigned integral types have a partial overlap of definition domains, yet due to the automatic promotion rules it is impossible to write a domain clamping function directly, since `std::numeric_limits` returns the domain boundaries in the given type, and `int(-1) < uint(0)` evaluates to false, due to int being is promoted to uint. The attempt to circumvent this problem here relies on a check if the comparison crosses the zero point, and otherwise relies explicitly on the promotion to the number with the larger domain.
145 lines
3.3 KiB
C++
145 lines
3.3 KiB
C++
/*
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ParameterDomain(Test) - document the handling of parameter type domain
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Copyright (C)
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2026, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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* *****************************************************************/
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/** @file parameter-domain-test.cpp
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** unit test \ref ParameterDomain_test
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*/
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#include "test/run.hpp"
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//#include "test/test-helper.hpp"
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#include "lib/par/domain.hpp"
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#include "test/diagnostic-output.hpp"////////////TODO
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//#include <utility>
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//#include <string>
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//#include <vector>
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//using std::string;
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//using std::vector;
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//using std::swap;
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namespace lib {
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namespace par {
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namespace test{
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// using lumiera::error::LUMIERA_ERROR_LOGIC;
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namespace {//Test fixture....
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class Thing
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{ };
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template<typename X>
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struct Some
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{
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X x;
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};
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typedef Some<Thing> SomeThing;
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}//(End)Test fixture
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/**************************************************************************//**
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* @test cover properties of generic parameter containers.
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*/
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class ParameterDomain_test : public Test
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{
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virtual void
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run (Arg)
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{
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seedRand();
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basics();
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verify_valueLimits();
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verify_valueAccess();
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}
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void
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basics()
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{
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}
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void
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verify_valueLimits()
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{
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SHOW_EXPR(preClamp<int> (23))
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SHOW_EXPR(preClamp<int> (-55))
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SHOW_EXPR(preClamp<uint> (23))
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SHOW_EXPR(preClamp<uint> (-55))
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SHOW_EXPR((sub_domain<uint,int>))
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SHOW_EXPR((sub_domain<int,uint>))
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SHOW_EXPR((sub_domain<short,long>))
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SHOW_EXPR((sub_domain<long,short>))
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SHOW_EXPR(std::numeric_limits<uint>::max())
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SHOW_EXPR(std::numeric_limits<int>::max())
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SHOW_EXPR(std::numeric_limits<uint>::lowest())
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SHOW_EXPR(std::numeric_limits<int>::lowest())
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SHOW_EXPR(preClamp<short> (INT64_MAX))
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SHOW_EXPR(preClamp<short> (INT64_MIN))
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SHOW_EXPR(preClamp<ushort> (numeric_limits<float>::max()))
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SHOW_EXPR(preClamp<ushort> (numeric_limits<float>::lowest()))
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SHOW_EXPR(preClamp<float> (numeric_limits<uint64_t>::max()))
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SHOW_EXPR(preClamp<float> (numeric_limits<double>::lowest()))
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SHOW_EXPR(preClamp<bool> (0.5));
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SHOW_EXPR(preClamp<bool> (0.5 + numeric_limits<double>::epsilon()))
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SHOW_EXPR(preClamp<bool> (numeric_limits<double>::min()))
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}
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void
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verify_valueAccess()
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{
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BaseDomain<int> domInt;
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Domain& d1{domInt};
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int val1 = 1 + rani (1000);
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ValBuff& src1 = asValBuff (val1);
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uint target1{0};
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CHECK (not target1);
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TypeHandler<uint>& du1{d1};
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du1.extractAs (target1, src1);
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CHECK (target1 == uint(val1));
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float target2{0};
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TypeHandler<float>& df1{d1};
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df1.extractAs (target2, src1);
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CHECK (target2 == float(val1));
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}
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};
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/** Register this test class... */
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LAUNCHER (ParameterDomain_test, "unit lib");
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}}} // namespace lib::par::test
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