From ac232a397a6842f4665e78ff64eead8265531742 Mon Sep 17 00:00:00 2001
From: Roland Conybeare <rconybeare@gmail.com>
Date: Wed, 24 Apr 2024 11:30:41 -0400
Subject: [PATCH] xo-unit: refactor: make natural_unit.reciprocal() a method

---
 include/xo/unit/natural_unit.hpp | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/include/xo/unit/natural_unit.hpp b/include/xo/unit/natural_unit.hpp
index 33f7b84d..a62bd58d 100644
--- a/include/xo/unit/natural_unit.hpp
+++ b/include/xo/unit/natural_unit.hpp
@@ -13,6 +13,9 @@ namespace xo {
     namespace qty {
         using nu_abbrev_type = flatstring<32>;
 
+        template <typename Int>
+        class natural_unit;
+
         /** @class natural_unit
          *  @brief an array representing the cartesian product of distinct basis-power-units
          *
@@ -37,6 +40,15 @@ namespace xo {
 
             constexpr bpu<Int> * bpu_v() const { return bpu_v_; }
 
+            constexpr natural_unit reciprocal() const {
+                natural_unit retval;
+
+                for (std::size_t i = 0; i < this->n_bpu(); ++i)
+                    retval.push_back((*this)[i].reciprocal());
+
+                return retval;
+            }
+
             constexpr nu_abbrev_type abbrev() const {
                 nu_abbrev_type retval;
 
@@ -303,18 +315,6 @@ namespace xo {
                      1.0 /*outer_scale_sq*/);
             }
 
-            template <typename Int>
-            constexpr natural_unit<Int>
-            nu_reciprocal(const natural_unit<Int> & nu)
-            {
-                natural_unit<Int> retval;
-
-                for (std::size_t i = 0; i < nu.n_bpu(); ++i)
-                    retval.push_back(nu[i].reciprocal());
-
-                return retval;
-            } /*nunit_reciprocal*/
-
         } /*namespace detail*/
 
         namespace nu2 {