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-rw-r--r--test/ken/shift.go121
1 files changed, 121 insertions, 0 deletions
diff --git a/test/ken/shift.go b/test/ken/shift.go
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+++ b/test/ken/shift.go
@@ -0,0 +1,121 @@
+// run
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Test shift.
+
+package main
+
+var ians [18]int;
+var uans [18]uint;
+var pass string;
+
+func
+testi(i int, t1,t2,t3 int) {
+ n := ((t1*3) + t2)*2 + t3;
+ if i != ians[n] {
+ print("itest ", t1,t2,t3,pass,
+ " is ", i, " sb ", ians[n], "\n");
+ }
+}
+
+func
+index(t1,t2,t3 int) int {
+ return ((t1*3) + t2)*2 + t3;
+}
+
+func
+testu(u uint, t1,t2,t3 int) {
+ n := index(t1,t2,t3);
+ if u != uans[n] {
+ print("utest ", t1,t2,t3,pass,
+ " is ", u, " sb ", uans[n], "\n");
+ }
+}
+
+func
+main() {
+ var i int;
+ var u,c uint;
+
+ /*
+ * test constant evaluations
+ */
+ pass = "con"; // constant part
+
+ testi( int(1234) << 0, 0,0,0);
+ testi( int(1234) >> 0, 0,0,1);
+ testi( int(1234) << 5, 0,1,0);
+ testi( int(1234) >> 5, 0,1,1);
+
+ testi(int(-1234) << 0, 1,0,0);
+ testi(int(-1234) >> 0, 1,0,1);
+ testi(int(-1234) << 5, 1,1,0);
+ testi(int(-1234) >> 5, 1,1,1);
+
+ testu(uint(5678) << 0, 2,0,0);
+ testu(uint(5678) >> 0, 2,0,1);
+ testu(uint(5678) << 5, 2,1,0);
+ testu(uint(5678) >> 5, 2,1,1);
+
+ /*
+ * test variable evaluations
+ */
+ pass = "var"; // variable part
+
+ for t1:=0; t1<3; t1++ { // +int, -int, uint
+ for t2:=0; t2<3; t2++ { // 0, +small, +large
+ for t3:=0; t3<2; t3++ { // <<, >>
+ switch t1 {
+ case 0: i = 1234;
+ case 1: i = -1234;
+ case 2: u = 5678;
+ }
+ switch t2 {
+ case 0: c = 0;
+ case 1: c = 5;
+ case 2: c = 1025;
+ }
+ switch t3 {
+ case 0: i <<= c; u <<= c;
+ case 1: i >>= c; u >>= c;
+ }
+ switch t1 {
+ case 0: testi(i,t1,t2,t3);
+ case 1: testi(i,t1,t2,t3);
+ case 2: testu(u,t1,t2,t3);
+ }
+ }
+ }
+ }
+}
+
+func
+init() {
+ /*
+ * set the 'correct' answer
+ */
+
+ ians[index(0,0,0)] = 1234;
+ ians[index(0,0,1)] = 1234;
+ ians[index(0,1,0)] = 39488;
+ ians[index(0,1,1)] = 38;
+ ians[index(0,2,0)] = 0;
+ ians[index(0,2,1)] = 0;
+
+ ians[index(1,0,0)] = -1234;
+ ians[index(1,0,1)] = -1234;
+ ians[index(1,1,0)] = -39488;
+ ians[index(1,1,1)] = -39;
+ ians[index(1,2,0)] = 0;
+ ians[index(1,2,1)] = -1;
+
+ uans[index(2,0,0)] = 5678;
+ uans[index(2,0,1)] = 5678;
+ uans[index(2,1,0)] = 181696;
+ uans[index(2,1,1)] = 177;
+ uans[index(2,2,0)] = 0;
+ uans[index(2,2,1)] = 0;
+}