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