From 720edc0fde080f3f0b094feff89d1df0a29281e3 Mon Sep 17 00:00:00 2001
From: Pierre Kancir <pierre.kancir.emn@gmail.com>
Date: Thu, 13 Apr 2017 13:33:40 +0200
Subject: [PATCH] PID: example fix travis warning missing function declaration
 implicit cast some style fix

---
 libraries/PID/examples/pid/pid.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libraries/PID/examples/pid/pid.cpp b/libraries/PID/examples/pid/pid.cpp
index 1e87886a33..11e0d9ecf7 100644
--- a/libraries/PID/examples/pid/pid.cpp
+++ b/libraries/PID/examples/pid/pid.cpp
@@ -6,6 +6,9 @@
 #include <AP_HAL/AP_HAL.h>
 #include <PID/PID.h> // ArduPilot Mega RC Library
 
+void setup();
+void loop();
+
 const AP_HAL::HAL& hal = AP_HAL::get_HAL();
 
 long radio_in;
@@ -33,7 +36,9 @@ void setup()
     pid.load_gains();
     hal.console->printf(
             "P %f  I %f  D %f  imax %d\n",
-            pid.kP(), pid.kI(), pid.kD(), pid.imax());
+            (double)pid.kP(),
+            (double)pid.kI(),
+            (double)pid.kD(), pid.imax());
 }
 
 void loop()