From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Fri, 6 May 2016 15:50:35 +0000 (+0100)
Subject: [Feature] Add utility function to return random number from 0 to 1
X-Git-Tag: 1.3.0~532^2~4
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=8cbcc5d357fe85895dc3311f0484bbba782f026f;p=rspamd.git

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

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
@@ -409,6 +409,12 @@ 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
  */