From 95b4257a4df36516e192d72b12da8673f6af3081 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Mon, 30 Jul 2018 07:41:23 -0400
Subject: everything builds with new - operators defined

---
 lib/height.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/height.h')

diff --git a/lib/height.h b/lib/height.h
index a4cbbed..d2173fe 100644
--- a/lib/height.h
+++ b/lib/height.h
@@ -44,6 +44,10 @@ struct height_t {
   inline double operator*(double a) const {
     return x * a;
   }
+
+  inline T operator-(const height_t& h) const {
+    return x - h.x;
+  }
 };
 
 template <class T>
-- 
cgit v1.2.3-70-g09d2