Roland Conybeare
d1fa15f248
git-subtree-dir: xo-unit git-subtree-mainline:e9ee6992cagit-subtree-split:b531e382c2
38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
/** @file ex_su.cpp **/
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#include "xo/unit/scaled_unit.hpp"
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#include "xo/unit/scaled_unit_iostream.hpp"
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#include <iostream>
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using namespace std;
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int
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main() {
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using namespace xo::qty;
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constexpr auto u_prod = u::meter * u::kilometer;
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static_assert(u_prod[0].bu() == detail::bu::meter);
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static_assert(u_prod[0].power() == power_ratio_type(2));
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static_assert(u_prod.outer_scale_factor_ == xo::ratio::ratio<int64_t>(1000));
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static_assert(u_prod.outer_scale_sq_ == 1.0); // used if fractional dimension
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constexpr auto u_div = u::meter / u::kilometer;
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static_assert(u_div.n_bpu() == 0);
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static_assert(u_div.outer_scale_factor_ == xo::ratio::ratio<int64_t>(1,1000));
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static_assert(u_prod.outer_scale_sq_ == 1.0); // used if fractional dimension
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constexpr auto u2_prod = u::meter * u::hour * u::kilometer * u::minute;
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static_assert(u2_prod.n_bpu() == 2);
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static_assert(u2_prod[0].bu() == detail::bu::meter);
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static_assert(u2_prod[1].bu() == detail::bu::hour);
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// *1000 from converting kilometers -> meters
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// /60 from converting minutes -> hours
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// 1000/60 = 50/3 in lowest terms
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static_assert(u2_prod.outer_scale_factor_ == xo::ratio::ratio<int64_t>(50,3)); // used if fractional dimension
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static_assert(u2_prod.outer_scale_sq_ == 1.0); // used if fractional dimension
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}
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/** end ex_su.cpp **/
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