rt.util.random: add attributes

dlang · Jun 28, 2016 · 22f7010 · 22f7010
1 parent 6251718
commit 22f7010
Showing 1 changed file with 7 additions and 4 deletions.
diff --git a/src/rt/util/random.d b/src/rt/util/random.d
@@ -8,35 +8,38 @@ module rt.util.random;
 
 struct Rand48
 {
-nothrow:
     private ulong rng_state;
 
+@safe @nogc nothrow:
+
     void defaultSeed()
     {
         import ctime = core.stdc.time : time;
         seed(cast(uint)ctime.time(null));
     }
 
+pure:
+
     void seed(uint seedval)
     {
         assert(seedval);
         rng_state = cast(ulong)seedval << 16 | 0x330e;
         popFront();
     }
 
-    auto opCall() @nogc
+    auto opCall()
     {
         auto result = front;
         popFront();
         return result;
     }
 
-    @property uint front() @nogc
+    @property uint front()
     {
         return cast(uint)(rng_state >> 16);
     }
 
-    void popFront() @nogc
+    void popFront()
     {
         immutable ulong a = 25214903917;
         immutable ulong c = 11;