From 21a603a0093e5730ad4ddc71a3ab1fedf41c11fb Mon Sep 17 00:00:00 2001
From: Chip Audette <chipaudette@yahoo.com>
Date: Wed, 15 Feb 2017 14:19:26 -0500
Subject: [PATCH] Add ifdef to headers

---
 AudioConvert_F32.h    | 4 ++--
 AudioEffectGain_F32.h | 4 ++++
 AudioFilterFIR_F32.h  | 4 ++--
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/AudioConvert_F32.h b/AudioConvert_F32.h
index 64af32e..426886a 100644
--- a/AudioConvert_F32.h
+++ b/AudioConvert_F32.h
@@ -1,6 +1,6 @@
 
-#ifndef _AudioConvert_I16toF32
-#define _AudioConvert_I16toF32
+#ifndef _AudioConvert_I16toF32_h
+#define _AudioConvert_I16toF32_h
 
 
 #include <AudioStream_F32.h>
diff --git a/AudioEffectGain_F32.h b/AudioEffectGain_F32.h
index 8539cc7..307cfd4 100644
--- a/AudioEffectGain_F32.h
+++ b/AudioEffectGain_F32.h
@@ -9,6 +9,9 @@
  * MIT License.  use at your own risk.
 */
 
+#ifndef _AudioEffectGain_h
+#define _AudioEffectGain_h
+
 #include <arm_math.h> //ARM DSP extensions.  for speed!
 #include <AudioStream_F32.h>
 
@@ -51,3 +54,4 @@ class AudioEffectGain_F32 : public AudioStream_F32
     float gain = 1.0; //default value
 };
 
+#endif
\ No newline at end of file
diff --git a/AudioFilterFIR_F32.h b/AudioFilterFIR_F32.h
index 4ccbf10..90d60fc 100644
--- a/AudioFilterFIR_F32.h
+++ b/AudioFilterFIR_F32.h
@@ -6,8 +6,8 @@
  * 
  */
 
-#ifndef _filter_fir_f32
-#define _filter_fir_f32
+#ifndef _filter_fir_f32_h
+#define _filter_fir_f32_h
 
 #include "Arduino.h"
 #include "AudioStream_F32.h"