From 3037b486643c6843fd97f90d3c4ebe8f7a349a39 Mon Sep 17 00:00:00 2001
From: Kevin Darby <kevin.darby@bluetradesys.com>
Date: Fri, 25 Aug 2023 12:02:55 -0400
Subject: [PATCH] fix trimmed mean as suggested by tvondra

https://github.com/ajwerner/tdigestc/issues/8
---
 go/tdigest.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/go/tdigest.c b/go/tdigest.c
index b2a1e13..3c71890 100644
--- a/go/tdigest.c
+++ b/go/tdigest.c
@@ -229,7 +229,7 @@ double td_trimmed_mean(td_histogram_t *h, double lo, double hi) {
                count_seen += h->nodes[i-1].count;
           }
           node_t *n = &h->nodes[i];
-          if (n->count < left_tail_count) {
+          if (count_seen + n->count < left_tail_count) {
                continue;
           }
           if (count_seen > right_tail_count) {