595390497c
Ensuring that:
* it still works as before on C++98 and C++03
* C++11 "strict" constexpr is used where possible
- requires replacing { R x; return f(x); } with { return f(R()); }
* C++14 "relaxed" constexpr is used only where otherwise impossible
- assignment operators
- functions who's implementations require more than a single return
statement
204 lines
6.0 KiB
C++
204 lines
6.0 KiB
C++
// Boost.Units - A C++ library for zero-overhead dimensional analysis and
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// unit/quantity manipulation and conversion
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//
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// Copyright (C) 2003-2008 Matthias Christian Schabel
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// Copyright (C) 2008 Steven Watanabe
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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/**
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\file
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\brief test_units_1.cpp
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\details
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Test unit class.
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Output:
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@verbatim
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@endverbatim
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**/
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#include "test_header.hpp"
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#include <boost/units/pow.hpp>
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namespace bu = boost::units;
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BOOST_STATIC_CONSTEXPR double E_ = 2.718281828459045235360287471352662497757;
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int test_main(int,char *[])
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{
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// default constructor
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E1;
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BOOST_CHECK(E1.value() == double());
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// value_type constructor
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E2(E_*bu::joules);
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BOOST_CHECK(E2.value() == E_);
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// copy constructor
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E3(E2);
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BOOST_CHECK(E3.value() == E_);
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// operator=
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E4 = E2;
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BOOST_CHECK(E4.value() == E_);
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// implicit copy constructor value_type conversion
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy,float> E5(E2);
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BOOST_UNITS_CHECK_CLOSE(E5.value(),float(E_));
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// implicit operator= value_type conversion
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//BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy,float> E7 = E2;
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//BOOST_UNITS_CHECK_CLOSE(E7.value(),float(E_));
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//BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy,long> E8 = E2;
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//BOOST_CHECK(E8.value() == long(E_));
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// const construction
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bu::quantity<bu::energy> E9(E2);
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BOOST_CHECK(E9.value() == E_);
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// value assignment
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bu::quantity_cast<double&>(E9) = 1.5;
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BOOST_CHECK(E9.value() == 1.5);
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// value assignment with implicit value_type conversion
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bu::quantity_cast<double&>(E9) = 2;
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BOOST_CHECK(E9.value() == double(2));
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// operator+=(this_type)
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E9 = 2.0*bu::joules;
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E9 += E9;
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BOOST_CHECK(E9.value() == 4.0);
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// operator-=(this_type)
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E9 = 2.0*bu::joules;
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E9 -= E9;
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BOOST_CHECK(E9.value() == 0.0);
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// operator*=(value_type)
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E9 = 2.0*bu::joules;
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E9 *= 2.0;
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BOOST_CHECK(E9.value() == 4.0);
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// operator/=(value_type)
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E9 = 2.0*bu::joules;
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E9 /= 2.0;
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BOOST_CHECK(E9.value() == 1.0);
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// static construct quantity from value_type
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E(bu::quantity<bu::energy>::from_value(2.5));
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BOOST_CHECK(E.value() == 2.5);
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// quantity_cast
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// unit * scalar
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BOOST_CHECK(bu::joules*2.0 == bu::quantity<bu::energy>::from_value(2.0));
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// unit / scalar
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BOOST_CHECK(bu::joules/2.0 == bu::quantity<bu::energy>::from_value(0.5));
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// scalar * unit
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BOOST_CHECK(2.0*bu::joules == bu::quantity<bu::energy>::from_value(2.0));
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// scalar / unit
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BOOST_CHECK(2.0/bu::joules == bu::quantity<bu::inverse_energy>::from_value(2.0));
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// quantity * scalar
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BOOST_CHECK(E*2.0 == bu::quantity<bu::energy>::from_value(5.0));
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// quantity / scalar
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BOOST_CHECK(E/2.0 == bu::quantity<bu::energy>::from_value(1.25));
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// scalar * quantity
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BOOST_CHECK(2.0*E == bu::quantity<bu::energy>::from_value(5.0));
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// scalar / quantity
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BOOST_CHECK(2.0/E == bu::quantity<bu::inverse_energy>::from_value(0.8));
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::length> L(1.0*bu::meters);
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::mass> M(2.0*bu::kilograms);
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::time> T(3.0*bu::seconds);
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::velocity> V(bu::quantity<bu::velocity>::from_value(4.0));
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// unit * quantity
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BOOST_CHECK(bu::seconds*V == 4.0*bu::meters);
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// unit / quantity
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BOOST_CHECK(bu::meters/V == 0.25*bu::seconds);
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// quantity * unit
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BOOST_CHECK(V*bu::seconds == 4.0*bu::meters);
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// quantity / unit
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BOOST_CHECK(V/bu::meters == 4.0/bu::seconds);
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// +quantity
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BOOST_CHECK(+V == 4.0*bu::meters_per_second);
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// -quantity
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BOOST_CHECK(-V == -4.0*bu::meters_per_second);
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// quantity + quantity
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BOOST_CHECK(V+V == 8.0*bu::meters_per_second);
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// quantity - quantity
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BOOST_CHECK(V-V == 0.0*bu::meters_per_second);
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// quantity * quantity
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BOOST_CHECK(V*T == 12.0*bu::meters);
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// quantity / quantity
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BOOST_CHECK(L/V == 0.25*bu::seconds);
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::area> A(2.0*bu::square_meters);
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::volume> VL(1.0*bu::cubic_meters);
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// integer power of quantity
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BOOST_CHECK(2.0*bu::pow<2>(L) == A);
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// rational power of quantity
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BOOST_CHECK((bu::pow< bu::static_rational<2,3> >(VL) == 0.5*A));
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// integer root of quantity
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BOOST_CHECK(bu::root<2>(A) == std::sqrt(2.0)*L);
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// rational root of quantity
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BOOST_CHECK((bu::root< bu::static_rational<3,2> >(VL) == 0.5*A));
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BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::area> A1(0.0*bu::square_meters),
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A2(0.0*bu::square_meters),
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A3(1.0*bu::square_meters),
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A4(-1.0*bu::square_meters);
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// operator==
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BOOST_CHECK((A1 == A2) == true);
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BOOST_CHECK((A1 == A3) == false);
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// operator!=
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BOOST_CHECK((A1 != A2) == false);
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BOOST_CHECK((A1 != A3) == true);
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// operator<
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BOOST_CHECK((A1 < A2) == false);
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BOOST_CHECK((A1 < A3) == true);
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// operator<=
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BOOST_CHECK((A1 <= A2) == true);
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BOOST_CHECK((A1 <= A3) == true);
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// operator>
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BOOST_CHECK((A1 > A2) == false);
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BOOST_CHECK((A1 > A4) == true);
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// operator>=
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BOOST_CHECK((A1 >= A2) == true);
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BOOST_CHECK((A1 >= A4) == true);
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return 0;
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}
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