From 820a5dc992148721f1fb24bdeaf87fcf642dba68 Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Wed, 27 Jul 2022 23:30:09 +0200
Subject: [PATCH] M17: IirFilter  code cleanup

---
 modemm17/IirFilter.h | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/modemm17/IirFilter.h b/modemm17/IirFilter.h
index 5da1f4357..4688aa767 100644
--- a/modemm17/IirFilter.h
+++ b/modemm17/IirFilter.h
@@ -13,12 +13,9 @@ namespace modemm17
 template <size_t N>
 struct BaseIirFilter : FilterBase<float>
 {
-	const std::array<float, N>& numerator_;
-	const std::array<float, N> denominator_;
-	std::array<float, N> history_{0};
-
-	BaseIirFilter(const std::array<float, N>& b, const std::array<float, N>& a)
-	: numerator_(b), denominator_(a)
+	BaseIirFilter(const std::array<float, N>& b, const std::array<float, N>& a) :
+        numerator_(b),
+        denominator_(a)
 	{
 		history_.fill(0.0);
 	}
@@ -40,11 +37,15 @@ struct BaseIirFilter : FilterBase<float>
 
 		return result;
 	}
+
+private:
+	const std::array<float, N>& numerator_;
+	const std::array<float, N> denominator_;
+	std::array<float, N> history_{0};
 };
 
 template <size_t N>
-BaseIirFilter<N> makeIirFilter(
-	const std::array<float, N>& b, const std::array<float, N>& a)
+BaseIirFilter<N> makeIirFilter(const std::array<float, N>& b, const std::array<float, N>& a)
 {
 	return std::move(BaseIirFilter<N>(b, a));
 }