From 5c652cdc956772c5c0ab0a1c8382d09fc23f0fa2 Mon Sep 17 00:00:00 2001
From: Finlay Davidson <finlay.davidson@coderclass.nl>
Date: Mon, 3 Apr 2023 22:00:36 +0200
Subject: [PATCH] Make the sqrt_internal macro customisable

---
 src/arduinoFFT.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/arduinoFFT.h b/src/arduinoFFT.h
index a8dbeb8..cb968ff 100644
--- a/src/arduinoFFT.h
+++ b/src/arduinoFFT.h
@@ -50,7 +50,9 @@
 #ifdef FFT_SQRT_APPROXIMATION
 	#include <type_traits>
 #else
-	#define sqrt_internal sqrt
+	#ifndef sqrt_internal
+		#define sqrt_internal sqrt
+	#endif
 #endif
 
 enum class FFTDirection