X-Git-Url: http://rtime.felk.cvut.cz/gitweb/can-benchmark.git/blobdiff_plain/67617ebf00d594ee3c932b6c8e1850265f28adee..8eef03acb9747a40aaf92175c49e43397b872404:/latester/histogram.h

diff --git a/latester/histogram.h b/latester/histogram.h
index 4a9aade..80d629e 100644
--- a/latester/histogram.h
+++ b/latester/histogram.h
@@ -23,8 +23,9 @@ int histogram_init(struct histogram *h,
 		return -1;
 }
 
-void histogram_add(struct histogram *h, unsigned value)
+void histogram_add(struct histogram *h, int value)
 {
+	if (value < 0) value = 0;
 	unsigned index = value / h->resolution;
 	if (index >= h->allocated)
 		index = h->allocated - 1;
@@ -35,6 +36,10 @@ void histogram_fprint(struct histogram *h, FILE *f)
 {
 	unsigned long long sum = 0, cum;
 	unsigned i;
+
+	if (!f)
+		return;
+
 	for (i = 0; i < h->allocated; i++)
 		sum += h->data[i];
 	cum = sum;