diff -r 000000000000 -r 3d3dcc3116d5 DateUtils.m
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DateUtils.m	Wed Apr 02 14:45:33 2008 -0700
@@ -0,0 +1,28 @@
+//
+//  DateUtils.m
+//  Cloudy
+//
+//  Created by Jens Alfke on 3/25/08.
+//  Copyright 2008 __MyCompanyName__. All rights reserved.
+//
+
+#import "DateUtils.h"
+
+#include <assert.h>
+#include <CoreServices/CoreServices.h>
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#include <unistd.h>
+
+
+NSTimeInterval TimeIntervalSinceBoot(void)
+{
+    // From http://developer.apple.com/qa/qa2004/qa1398.html
+    uint64_t abstime = mach_absolute_time();
+    // Have to do some pointer fun because AbsoluteToNanoseconds
+    // works in terms of UnsignedWide, which is a structure rather
+    // than a proper 64-bit integer.
+    Nanoseconds elapsedNano = AbsoluteToNanoseconds( *(AbsoluteTime *) &abstime );
+    return *(uint64_t*)&elapsedNano / 1.0e9;
+}
+