From 37f98dcf1c5ca3959946d8097d9aa5ee3232a243 Mon Sep 17 00:00:00 2001
From: Ahmet Inan <inan@aicodix.de>
Date: Sun, 4 Mar 2018 09:11:00 +0100
Subject: [PATCH] added FourPi()

---
 const.hh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/const.hh b/const.hh
index 7590e18..caf2070 100644
--- a/const.hh
+++ b/const.hh
@@ -11,8 +11,9 @@ namespace DSP {
 
 template <typename T>
 struct Const {
-	static inline T Pi()	{ return 3.14159265358979323846; } // 4*a(1)
-	static inline T TwoPi()	{ return 6.28318530717958647693; } // 8*a(1)
+	static inline T Pi()		{ return   3.14159265358979323846; } // 4*a(1)
+	static inline T TwoPi()		{ return   6.28318530717958647693; } // 8*a(1)
+	static inline T FourPi()	{ return  12.56637061435917295385; } // 16*a(1)
 };
 
 }