From b5f0874cd96ee2a62aabc645b9626c2749cb6a01 Mon Sep 17 00:00:00 2001
From: manuel <manuel@mausz.at>
Date: Mon, 26 Mar 2012 12:54:45 +0200
Subject: initial pintos checkin

---
 pintos-progos/tests/random.pm | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 pintos-progos/tests/random.pm

(limited to 'pintos-progos/tests/random.pm')

diff --git a/pintos-progos/tests/random.pm b/pintos-progos/tests/random.pm
new file mode 100644
index 0000000..be008ff
--- /dev/null
+++ b/pintos-progos/tests/random.pm
@@ -0,0 +1,27 @@
+use strict;
+use warnings;
+
+use tests::arc4;
+
+my (@arc4);
+
+sub random_init {
+    if (@arc4 == 0) {
+	my ($seed) = @_;
+	$seed = 0 if !defined $seed;
+	@arc4 = arc4_init (pack ("V", $seed));
+    }
+}
+
+sub random_bytes {
+    random_init ();
+    my ($n) = @_;
+    return arc4_crypt (\@arc4, "\0" x $n);
+}
+
+sub random_ulong {
+    random_init ();
+    return unpack ("V", random_bytes (4));
+}
+
+1;
-- 
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