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xo-unit: kitchen-sink doc + build improvements + 1 bug fix

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Roland Conybeare 2024-05-22 15:16:17 -04:00
commit 412a0ba163
45 changed files with 1712 additions and 472 deletions
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example/ex_su/ex_su.cpp Normal file
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/** @file ex_su.cpp **/
#include "xo/unit/scaled_unit.hpp"
#include "xo/unit/scaled_unit_iostream.hpp"
#include <iostream>
using namespace std;
int
main() {
using namespace xo::qty;
constexpr auto u_prod = u::meter * u::kilometer;
static_assert(u_prod[0].bu() == detail::bu::meter);
static_assert(u_prod[0].power() == power_ratio_type(2));
static_assert(u_prod.outer_scale_factor_ == xo::ratio::ratio<int64_t>(1000));
static_assert(u_prod.outer_scale_sq_ == 1.0); // used if fractional dimension
constexpr auto u_div = u::meter / u::kilometer;
static_assert(u_div.n_bpu() == 0);
static_assert(u_div.outer_scale_factor_ == xo::ratio::ratio<int64_t>(1,1000));
static_assert(u_prod.outer_scale_sq_ == 1.0); // used if fractional dimension
constexpr auto u2_prod = u::meter * u::hour * u::kilometer * u::minute;
static_assert(u2_prod.n_bpu() == 2);
static_assert(u2_prod[0].bu() == detail::bu::meter);
static_assert(u2_prod[1].bu() == detail::bu::hour);
// *1000 from converting kilometers -> meters
// /60 from converting minutes -> hours
// 1000/60 = 50/3 in lowest terms
static_assert(u2_prod.outer_scale_factor_ == xo::ratio::ratio<int64_t>(50,3)); // used if fractional dimension
static_assert(u2_prod.outer_scale_sq_ == 1.0); // used if fractional dimension
}
/** end ex_su.cpp **/