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clang-format on new examples

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Mateusz Pusz
2020-01-14 12:50:30 +01:00
parent 1c4624303e
commit 15e656aba6
4 changed files with 311 additions and 325 deletions
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example/conversion_factor.cpp
+39 -51
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@@ -1,4 +1,3 @@
/*
Copyright (c) 2003-2020 Andy Little.
@@ -17,75 +16,64 @@
*/
#include <units/physical/si/length.h>
#include <iostream>
/*
get conversion factor from one dimensionally equivalent
quantity type to another
get conversion factor from one dimensionally equivalent
quantity type to another
*/
namespace {
template <
units::Quantity Target,
units::Quantity Source
>
requires units::equivalent_dim<typename Source::dimension,typename Target::dimension>
constexpr inline
std::common_type_t<
typename Target::rep,
typename Source::rep
>
conversion_factor(Target , Source)
{
// get quantities looking like inputs but with Q::rep that doesnt have narrowing conversion
typedef std::common_type_t<
typename Target::rep,
typename Source::rep
> rep;
typedef units::quantity<typename Source::dimension,typename Source::unit,rep> source;
typedef units::quantity<typename Target::dimension,typename Target::unit,rep> target;
return target{source{1}}.count();
}
// get at the units text of the quantity, without its numeric value
auto inline constexpr units_str( const units::Quantity & q)
{
typedef std::remove_cvref_t<decltype(q)> qtype;
return units::detail::unit_text<typename qtype::dimension, typename qtype::unit>();
}
template<units::Quantity Target, units::Quantity Source>
requires units::equivalent_dim<typename Source::dimension, typename Target::dimension>
constexpr inline std::common_type_t<typename Target::rep, typename Source::rep> conversion_factor(Target, Source)
{
// get quantities looking like inputs but with Q::rep that doesn't have narrowing conversion
typedef std::common_type_t<typename Target::rep, typename Source::rep> rep;
typedef units::quantity<typename Source::dimension, typename Source::unit, rep> source;
typedef units::quantity<typename Target::dimension, typename Target::unit, rep> target;
return target{source{1}}.count();
}
// get at the units text of the quantity, without its numeric value
auto inline constexpr units_str(const units::Quantity& q)
{
typedef std::remove_cvref_t<decltype(q)> qtype;
return units::detail::unit_text<typename qtype::dimension, typename qtype::unit>();
}
} // namespace
namespace {
namespace length{
namespace length {
template <typename Rep = double>
using m = units::si::length<units::si::metre,Rep>;
template<typename Rep = double>
using m = units::si::length<units::si::metre, Rep>;
template <typename Rep = double>
using mm = units::si::length<units::si::millimetre,Rep>;
}
}
template<typename Rep = double>
using mm = units::si::length<units::si::millimetre, Rep>;
#include <iostream>
} // namespace length
} // namespace
using namespace units::si::literals;
int main()
{
std::cout << "conversion factor in mpusz/units...\n\n";
std::cout << "conversion factor in mpusz/units...\n\n";
constexpr length::m<> lengthA = 2.0m;
constexpr length::mm<> lengthB = lengthA;
constexpr length::m<> lengthA = 2.0m;
constexpr length::mm<> lengthB = lengthA;
std::cout << "lengthA( " << lengthA << " ) and lengthB( " << lengthB << " )\n"
"represent the same length in different units.\n\n";
std::cout << "lengthA( " << lengthA << " ) and lengthB( " << lengthB << " )\n"
<< "represent the same length in different units.\n\n";
std::cout << "therefore ratio lengthA / lengthB == " << lengthA / lengthB << "\n\n";
std::cout << "therefore ratio lengthA / lengthB == " << lengthA / lengthB << "\n\n";
std::cout << "conversion factor from "
"lengthA::unit of " << units_str(lengthA)
<< " to lengthB::unit of " << units_str(lengthB) << " :\n\n"
"lengthB.count( " << lengthB.count() << " ) == "
"lengthA.count( " << lengthA.count() << " ) * "
"conversion_factor( " << conversion_factor(lengthB, lengthA) << " )\n";
std::cout << "conversion factor from lengthA::unit of "
<< units_str(lengthA) << " to lengthB::unit of " << units_str(lengthB) << " :\n\n"
<< "lengthB.count( " << lengthB.count() << " ) == lengthA.count( " << lengthA.count()
<< " ) * conversion_factor( " << conversion_factor(lengthB, lengthA) << " )\n";
}