From 5d2b57394efd1eb641403efb540411ed5d087124 Mon Sep 17 00:00:00 2001
From: Dale Weiler <killfieldengine@gmail.com>
Date: Sun, 16 Jun 2013 02:24:10 +0000
Subject: [PATCH] Add the good old xor swap trick to the xor test, yes it works
 :P

---
 tests/xor.qc   | 19 +++++++++++++++++++
 tests/xor.tmpl |  1 +
 2 files changed, 20 insertions(+)

diff --git a/tests/xor.qc b/tests/xor.qc
index b2820ef..41d02e9 100644
--- a/tests/xor.qc
+++ b/tests/xor.qc
@@ -1,3 +1,16 @@
+vector swap(float x, float y) {
+    vector ret = '0 0 0';
+    // everyone knows this trick
+    ret.x = x;
+    ret.y = y;
+    
+    ret.x = ret.x ^ ret.y;
+    ret.y = ret.y ^ ret.x;
+    ret.x = ret.x ^ ret.y;
+    
+    return ret;
+}
+
 void main() {
     float x = 5;
     float y = 3;
@@ -30,4 +43,10 @@ void main() {
     
     print("vv: ", vtos(v3), "\n");
     print("vf: ", vtos(v4), "\n");
+    
+    // good olde xor swap test too
+    float swap_x = 100;
+    float swap_y = 200;
+    vector swaps = swap(swap_x, swap_y);
+    print("100:200 swapped is: ", ftos(swaps.x), ":", ftos(swaps.y), "\n");
 }
diff --git a/tests/xor.tmpl b/tests/xor.tmpl
index a2a4efc..5394f3d 100644
--- a/tests/xor.tmpl
+++ b/tests/xor.tmpl
@@ -10,3 +10,4 @@ M: assocative
 M: inverse
 M: vv: '6 8 6'
 M: vf: '15 8 15'
+M: 100:200 swapped is: 200:100
-- 
2.39.2