From cbf244aeda7cd893f5fe3fbc2865e0457796e829 Mon Sep 17 00:00:00 2001
From: ehofman <ehofman>
Date: Sat, 5 Apr 2003 13:05:24 +0000
Subject: [PATCH] Add a function declaration

---
 src/Instrumentation/attitude_indicator.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Instrumentation/attitude_indicator.cxx b/src/Instrumentation/attitude_indicator.cxx
index 36a8a2d86..3badf2055 100644
--- a/src/Instrumentation/attitude_indicator.cxx
+++ b/src/Instrumentation/attitude_indicator.cxx
@@ -6,6 +6,8 @@
 // TODO:
 // - better spin-up
 
+#include <math.h>	// fabs()
+
 #include "attitude_indicator.hxx"
 #include <Main/fg_props.hxx>
 #include <Main/util.hxx>
-- 
2.39.5