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xo-unit: + natural_unit.abbrev()

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This commit is contained in:
Roland Conybeare 2024-04-23 10:33:56 -04:00
commit 6a3db2197e
2 changed files with 95 additions and 0 deletions
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14
include/xo/unit/natural_unit.hpp
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@ -11,6 +11,8 @@
namespace xo {
namespace qty {
using nu_abbrev_type = flatstring<32>;
/** @class natural_unit
* @brief an array representing the cartesian product of distinct basis-power-units
*
@ -32,6 +34,18 @@ namespace xo {
constexpr std::size_t n_bpu() const { return n_bpu_; }
constexpr bpu<Int> * bpu_v() const { return bpu_v_; }
constexpr nu_abbrev_type abbrev() const {
nu_abbrev_type retval;
for (std::size_t i = 0; i < n_bpu_; ++i) {
if (i > 0)
retval.append(".");
retval.append(bpu_v_[i].abbrev(), 0, -1);
}
return retval;
}
constexpr void push_back(const bpu<Int> & bpu) {
if (n_bpu_ < n_dim)
bpu_v_[n_bpu_++] = bpu;