From 5b6a03df6fec2dc8f608ac5c372bf4b0f24bcbde Mon Sep 17 00:00:00 2001
From: Matthew Kendall <mdkendall@users.noreply.github.com>
Date: Wed, 22 Jul 2020 11:57:57 -0700
Subject: [PATCH] Add missing define.

---
 libxavna/calibration.C | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libxavna/calibration.C b/libxavna/calibration.C
index 3f65b20..9f35c0f 100644
--- libxavna/calibration.C
+++ libxavna/calibration.C
@@ -1,3 +1,4 @@
+#define  _USE_MATH_DEFINES
 #include "include/calibration.H"
 #include "include/workarounds.H"
 #include <iostream>