diff options
Diffstat (limited to 'lib/height.h')
-rw-r--r-- | lib/height.h | 4 |
1 files changed, 4 insertions, 0 deletions
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> |