X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=dali%2Fpublic-api%2Fmath%2Frandom.h;h=bc6fcbd68100f28ca8bc800919f1dfe4046b9f30;hb=refs%2Ftags%2Fsubmit%2Ftizen%2F20180716.055223;hp=97818f587e1cf0c64b5f0839dd3f004937a51f46;hpb=4c1d314e5532f093daa46fcf038f47cde2c70a1b;p=platform%2Fcore%2Fuifw%2Fdali-core.git

diff --git a/dali/public-api/math/random.h b/dali/public-api/math/random.h
old mode 100644
new mode 100755
index 97818f5..bc6fcbd
--- a/dali/public-api/math/random.h
+++ b/dali/public-api/math/random.h
@@ -2,7 +2,7 @@
 #define __DALI_RANDOM_H__
 
 /*
- * Copyright (c) 2015 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,8 @@
  * limitations under the License.
  *
  */
+// EXTERNAL INCLUDES
+#include <ctime>
 
 // INTERNAL INCLUDES
 #include <dali/public-api/math/vector4.h>
@@ -48,8 +50,19 @@ inline float Range(float f0, float f1)
 {
   float min = std::min(f0, f1);
   float max = std::max(f0, f1);
-  srand( time( NULL ) );
-  return min + (rand() & 0xfff) * (max-min) * (1.0f/4095.0f);
+
+  // Ensure we initialize only once. As it's inlined, this static variable will exist in the code-block using it, thus,
+  // will be created and then initialized again when another code-block uses this.
+  static bool initialized( false );
+  if( !initialized )
+  {
+    auto seed = time( NULL );
+    srand( seed );
+    initialized = true;
+  }
+
+  auto randValue = rand();
+  return (randValue & 0xfff) * (1.0f/4095.0f) * (max-min) + min;
 }
 
 /**