[Feature] Add utility function to return random number from 0 to 1

2 files changed, 14 insertions, 2 deletions

diff --git a/src/libutil/util.c b/src/libutil/util.c
index 87395c568..4fc3eb613 100644
--- a/src/libutil/util.c
+++ b/src/libutil/util.c
@@ -2027,7 +2027,7 @@ rspamd_hash_seed (void)
 }
 
 gdouble
-rspamd_time_jitter (gdouble in, gdouble jitter)
+rspamd_random_double (void)
 {
 	guint64 rnd_int;
 	double res;
@@ -2037,11 +2037,17 @@ rspamd_time_jitter (gdouble in, gdouble jitter)
 	res = rnd_int;
 	res *= transform_bias;
 
+	return res;
+}
+
+gdouble
+rspamd_time_jitter (gdouble in, gdouble jitter)
+{
 	if (jitter == 0) {
 		jitter = in;
 	}
 
-	return in + jitter * res;
+	return in + jitter * rspamd_random_double ();
 }
 
 gboolean
diff --git a/src/libutil/util.h b/src/libutil/util.h
index ec8150fae..48e91cb4f 100644
--- a/src/libutil/util.h
+++ b/src/libutil/util.h
@@ -410,6 +410,12 @@ guint64 rspamd_hash_seed (void);
 gdouble rspamd_time_jitter (gdouble in, gdouble jitter);
 
 /**
+ * Return random double in range [0..1)
+ * @return
+ */
+gdouble rspamd_random_double (void);
+
+/**
  * Constant time version of memcmp
  */
 gboolean rspamd_constant_memcmp (const guchar *a, const guchar *b, gsize len);