From: Hamish Coleman <hamish@zot.org>
Date: Fri, 17 Feb 2017 05:02:21 +0000 (+0800)
Subject: Ensure that impossibly latency values do not affect stats
X-Git-Url: https://git.octo.it/?p=liboping.git;a=commitdiff_plain;h=8291dce0cd5f40fc849c0c492a42605ccd9246f8

Ensure that impossibly latency values do not affect stats
---

diff --git a/src/oping.c b/src/oping.c
index e439dbf..b4999c5 100644
--- a/src/oping.c
+++ b/src/oping.c
@@ -293,6 +293,11 @@ static void clean_history (ping_context_t *ctx) /* {{{ */
 	memcpy (ctx->history_by_value, ctx->history_by_time,
 			sizeof (ctx->history_by_time));
 
+        /* Remove impossible values */
+	for (i = 0; i < ctx->history_size; i++)
+                if (ctx->history_by_value[i]<0)
+                        ctx->history_by_value[i]=NAN;
+
 	/* Sort all RTTs. */
 	qsort (ctx->history_by_value, ctx->history_size, sizeof
 			(ctx->history_by_value[0]), compare_double);
@@ -1046,6 +1051,10 @@ static int update_graph_prettyping (ping_context_t *ctx, /* {{{ */
 		index = (history_offset + x) % ctx->history_size;
 		latency = ctx->history_by_time[index];
 
+                if (latency < 0) {
+                        continue;
+                }
+
 		if (latency >= 0.0)
 		{
 			double ratio;