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xo-unit: ex3 using up-to-date compile-time units

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This commit is contained in:
Roland Conybeare 2024-05-03 18:47:14 -04:00
commit 76043fb7cb
2 changed files with 17 additions and 7 deletions
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2
example/ex3/CMakeLists.txt
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@ -10,6 +10,6 @@ xo_include_options2(${SELF_EXE})
# dependencies.. # dependencies..
xo_self_headeronly_dependency(${SELF_EXE} xo_unit) xo_self_headeronly_dependency(${SELF_EXE} xo_unit)
#xo_dependency(${SELF_EXE} reflect) xo_dependency(${SELF_EXE} xo_flatstring)
# end CMakeLists.txt # end CMakeLists.txt

22
example/ex3/ex3.cpp
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@ -1,18 +1,28 @@
/** @file ex3.cpp **/ /** @file ex3.cpp **/
#include "xo/unit/mpl/quantity.hpp" #include "xo/unit/quantity.hpp"
#include "xo/unit/quantity_iostream.hpp"
#include <iostream> #include <iostream>
int int
main () { main () {
namespace u = xo::unit::units; namespace q = xo::qty::qty;
namespace qty = xo::unit::qty; namespace u = xo::qty::nu;
using xo::qty::with_units;
using xo::qty::stdquantity;
using xo::qty::quantity;
using xo::flatstring;
using namespace std; using namespace std;
auto t1 = qty::milliseconds(1); constexpr stdquantity<u::second> t = q::minutes(2);
auto t2 = qty::minutes(1); constexpr stdquantity<u::meter> d = q::kilometers(2.5);
cerr << "t1: " << t1 << ", t2: " << t2 << ", t1*t2: " << t1*t2 << endl; constexpr auto t2 = t*t;
constexpr auto a = d / (t*t);
cerr << "t: " << t << ", d: " << d
<< ", d.t^-2: " << a
<< endl;
} }
/** end ex3.cpp **/ /** end ex3.cpp **/