From f2e616333fd250d2efafb03744f8866926ba8c7b Mon Sep 17 00:00:00 2001
From: Zhangyun Ye <z.ye22@student.unimelb.edu.au>
Date: Sun, 2 Sep 2018 23:50:57 +1000
Subject: [PATCH] Upload New File
---
examples/B15.s | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
create mode 100644 examples/B15.s
diff --git a/examples/B15.s b/examples/B15.s
new file mode 100644
index 0000000..5fabcd7
--- /dev/null
+++ b/examples/B15.s
@@ -0,0 +1,17 @@
+MOV R3 12 ; N = 12
+MOV R2 1 ;
+
+;; local variables
+;; R1 holds 'i', which is a counter from 0 .. N
+;; R0 holds 'n', which is always equal to i!
+MOV R1 0 ; i = 0;
+MOV R0 1 ; n = 1;
+
+;; program body
+;; loop invariant (see SWEN90010 next semester): n = i!
+SUB R4 R3 R1 ; while(i != N)
+JZ R4 4 ; {
+ADD R1 R1 R2 ; i = i + 1;
+MUL R0 R0 R1 ; n = n * i;
+JMP 0 ; }
+RET R0 ; return n;
--
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