From 2aca6c64ab5f5b0e8a2255413d4845abee2ba34b Mon Sep 17 00:00:00 2001
From: Jason Short <jasonshort@mac.com>
Date: Sat, 21 Apr 2012 15:17:09 -0700
Subject: [PATCH] Added a union for casting floats to ints and back when
 storing Floats to the DataFlash

---
 ArduCopter/ArduCopter.pde |  6 ++++++
 ArduCopter/Log.pde        | 13 +++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 843d034bea..a71f252727 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -488,6 +488,12 @@ static const float radius_of_earth 	= 6378100;		// meters
 // Used by Mavlink for unknow reasons
 static const float gravity 			= 9.81;			// meters/ sec^2
 
+// Unions for getting byte values
+union float_int{
+	int32_t int_value;
+	float float_value;
+} float_int;
+
 
 ////////////////////////////////////////////////////////////////////////////////
 // Location & Navigation
diff --git a/ArduCopter/Log.pde b/ArduCopter/Log.pde
index 0a0b350168..c26a3de017 100644
--- a/ArduCopter/Log.pde
+++ b/ArduCopter/Log.pde
@@ -43,6 +43,19 @@ const struct Menu::command log_menu_commands[] PROGMEM = {
 	{"disable",	select_logs}
 };
 
+static int32_t get_int(float f)
+{
+	float_int.float_value = f;
+	return float_int.int_value;
+}
+
+static float get_float(int32_t i)
+{
+	float_int.int_value = i;
+	return float_int.float_value;
+}
+
+
 // A Macro to create the Menu
 MENU2(log_menu, "Log", log_menu_commands, print_log_menu);