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- // Boost.Units - A C++ library for zero-overhead dimensional analysis and
- // unit/quantity manipulation and conversion
- //
- // Copyright (C) 2003-2008 Matthias Christian Schabel
- // Copyright (C) 2008 Steven Watanabe
- //
- // Distributed under the Boost Software License, Version 1.0. (See
- // accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- /**
- \file
-
- \brief test_units_1.cpp
- \details
- Test unit class.
- Output:
- @verbatim
- @endverbatim
- **/
- #include "test_header.hpp"
- #include <boost/units/pow.hpp>
- namespace bu = boost::units;
- BOOST_STATIC_CONSTEXPR double E_ = 2.718281828459045235360287471352662497757;
- int test_main(int,char *[])
- {
- // default constructor
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E1;
- BOOST_CHECK(E1.value() == double());
-
- // value_type constructor
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E2(E_*bu::joules);
- BOOST_CHECK(E2.value() == E_);
- // copy constructor
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E3(E2);
- BOOST_CHECK(E3.value() == E_);
- // operator=
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E4 = E2;
- BOOST_CHECK(E4.value() == E_);
- // implicit copy constructor value_type conversion
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy,float> E5(E2);
- BOOST_UNITS_CHECK_CLOSE(E5.value(),float(E_));
- // implicit operator= value_type conversion
- //BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy,float> E7 = E2;
- //BOOST_UNITS_CHECK_CLOSE(E7.value(),float(E_));
-
- //BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy,long> E8 = E2;
- //BOOST_CHECK(E8.value() == long(E_));
-
- // const construction
- bu::quantity<bu::energy> E9(E2);
- BOOST_CHECK(E9.value() == E_);
-
- // value assignment
- bu::quantity_cast<double&>(E9) = 1.5;
- BOOST_CHECK(E9.value() == 1.5);
-
- // value assignment with implicit value_type conversion
- bu::quantity_cast<double&>(E9) = 2;
- BOOST_CHECK(E9.value() == double(2));
-
- // operator+=(this_type)
- E9 = 2.0*bu::joules;
- E9 += E9;
- BOOST_CHECK(E9.value() == 4.0);
-
- // operator-=(this_type)
- E9 = 2.0*bu::joules;
- E9 -= E9;
- BOOST_CHECK(E9.value() == 0.0);
-
- // operator*=(value_type)
- E9 = 2.0*bu::joules;
- E9 *= 2.0;
- BOOST_CHECK(E9.value() == 4.0);
-
- // operator/=(value_type)
- E9 = 2.0*bu::joules;
- E9 /= 2.0;
- BOOST_CHECK(E9.value() == 1.0);
-
- // static construct quantity from value_type
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::energy> E(bu::quantity<bu::energy>::from_value(2.5));
- BOOST_CHECK(E.value() == 2.5);
-
- // quantity_cast
-
- // unit * scalar
- BOOST_CHECK(bu::joules*2.0 == bu::quantity<bu::energy>::from_value(2.0));
-
- // unit / scalar
- BOOST_CHECK(bu::joules/2.0 == bu::quantity<bu::energy>::from_value(0.5));
-
- // scalar * unit
- BOOST_CHECK(2.0*bu::joules == bu::quantity<bu::energy>::from_value(2.0));
-
- // scalar / unit
- BOOST_CHECK(2.0/bu::joules == bu::quantity<bu::inverse_energy>::from_value(2.0));
- // quantity * scalar
- BOOST_CHECK(E*2.0 == bu::quantity<bu::energy>::from_value(5.0));
- // quantity / scalar
- BOOST_CHECK(E/2.0 == bu::quantity<bu::energy>::from_value(1.25));
-
- // scalar * quantity
- BOOST_CHECK(2.0*E == bu::quantity<bu::energy>::from_value(5.0));
- // scalar / quantity
- BOOST_CHECK(2.0/E == bu::quantity<bu::inverse_energy>::from_value(0.8));
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::length> L(1.0*bu::meters);
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::mass> M(2.0*bu::kilograms);
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::time> T(3.0*bu::seconds);
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::velocity> V(bu::quantity<bu::velocity>::from_value(4.0));
-
- // unit * quantity
- BOOST_CHECK(bu::seconds*V == 4.0*bu::meters);
-
- // unit / quantity
- BOOST_CHECK(bu::meters/V == 0.25*bu::seconds);
-
- // quantity * unit
- BOOST_CHECK(V*bu::seconds == 4.0*bu::meters);
-
- // quantity / unit
- BOOST_CHECK(V/bu::meters == 4.0/bu::seconds);
-
- // +quantity
- BOOST_CHECK(+V == 4.0*bu::meters_per_second);
-
- // -quantity
- BOOST_CHECK(-V == -4.0*bu::meters_per_second);
-
- // quantity + quantity
- BOOST_CHECK(V+V == 8.0*bu::meters_per_second);
-
- // quantity - quantity
- BOOST_CHECK(V-V == 0.0*bu::meters_per_second);
-
- // quantity * quantity
- BOOST_CHECK(V*T == 12.0*bu::meters);
-
- // quantity / quantity
- BOOST_CHECK(L/V == 0.25*bu::seconds);
-
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::area> A(2.0*bu::square_meters);
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::volume> VL(1.0*bu::cubic_meters);
-
- // integer power of quantity
- BOOST_CHECK(2.0*bu::pow<2>(L) == A);
-
- // rational power of quantity
- BOOST_CHECK((bu::pow< bu::static_rational<2,3> >(VL) == 0.5*A));
-
- // integer root of quantity
- BOOST_CHECK(bu::root<2>(A) == std::sqrt(2.0)*L);
-
- // rational root of quantity
- BOOST_CHECK((bu::root< bu::static_rational<3,2> >(VL) == 0.5*A));
-
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::area> A1(0.0*bu::square_meters),
- A2(0.0*bu::square_meters),
- A3(1.0*bu::square_meters),
- A4(-1.0*bu::square_meters);
-
- // operator==
- BOOST_CHECK((A1 == A2) == true);
- BOOST_CHECK((A1 == A3) == false);
-
- // operator!=
- BOOST_CHECK((A1 != A2) == false);
- BOOST_CHECK((A1 != A3) == true);
-
- // operator<
- BOOST_CHECK((A1 < A2) == false);
- BOOST_CHECK((A1 < A3) == true);
-
- // operator<=
- BOOST_CHECK((A1 <= A2) == true);
- BOOST_CHECK((A1 <= A3) == true);
-
- // operator>
- BOOST_CHECK((A1 > A2) == false);
- BOOST_CHECK((A1 > A4) == true);
-
- // operator>=
- BOOST_CHECK((A1 >= A2) == true);
- BOOST_CHECK((A1 >= A4) == true);
-
- return 0;
- }
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