srand: throw DomainError if a negative seed is used.

JuliaLang · Jan 5, 2013 · 3c5946c · 3c5946c
1 parent 5a51622
commit 3c5946c
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/base/rng.jl b/base/rng.jl
@@ -90,11 +90,12 @@ end
 srand(n::Integer) = srand(make_seed(n))
 
 function make_seed(n::Integer)
+    n < 0 && throw(DomainError())
     seed = Uint32[]
     while true
         push(seed, n & 0xffffffff)
         n >>= 32
-        if n == 0 || ~n == 0
+        if n == 0
             return seed
         end
     end