From b60f09401a15721f626bcb7c852f68b82fe39c1c Mon Sep 17 00:00:00 2001
From: wukong <wukong@longaeva>
Date: Sun, 3 May 2026 13:10:31 -0700
Subject: replaced sum[1-4].awk with serial and columnar versions; minor merge
 updates between fir_window scripts;

---
 fir_window_gaussian.awk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'fir_window_gaussian.awk')

diff --git a/fir_window_gaussian.awk b/fir_window_gaussian.awk
index 14ebc48..cf2dd12 100644
--- a/fir_window_gaussian.awk
+++ b/fir_window_gaussian.awk
@@ -1,7 +1,7 @@
 #!/usr/bin/awk -f
 
 ### fir_window_gaussian.awk
-# generate a Gaussian window
+# generate a Gaussian FIR window
 # https://en.wikipedia.org/wiki/Window_function
 
 
@@ -21,7 +21,7 @@ BEGIN {
 
     # window interval goes from -M to M
     M = 0.5*(N - 1)
-    pi = 4*atan2(1,1)
+    pi = 4.0*atan2(1.0, 1.0)
 
     for (n=0; n<N; n++) {
         if (N > 1 && M > 0) {
-- 
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