Initial commit: Go 1.23 release state

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;
+}