From 2140aa909280dfa8506466aa20b2c2b8cbb377fe Mon Sep 17 00:00:00 2001
From: wukong <wukong@longaeva>
Date: Sat, 9 May 2026 14:14:18 -0700
Subject: added diff2.awk to estimate numerical second diff; removed commented
 out population covariance from cov.awk; added decimal points to pi estimate
 in em.awk;

---
 diff.awk | 1 +
 1 file changed, 1 insertion(+)

(limited to 'diff.awk')

diff --git a/diff.awk b/diff.awk
index 2b42a2d..1e6a882 100644
--- a/diff.awk
+++ b/diff.awk
@@ -2,6 +2,7 @@
 
 ### diff.awk
 # print numerical diff along columns
+# dy[n] = y[n] - y[n-1]
 
 
 BEGIN {
-- 
cgit v1.2.3