Main.java revision 2ad60cfc28e14ee8f0bb038720836a4696c478ad 
1// Copyright 2006 The Android Open Source Project
2
3/**
4 * Test arithmetic operations.
5 */
6public class Main {
7
8    static void shiftTest1()
9    {
10        final int[] mBytes = {
11            0x11, 0x22, 0x33, 0x44, 0x88, 0x99, 0xaa, 0xbb
12        };
13        long l;
14        int i1, i2;
15
16        i1 = mBytes[0] | mBytes[1] << 8 | mBytes[2] << 16 | mBytes[3] << 24;
17        i2 = mBytes[4] | mBytes[5] << 8 | mBytes[6] << 16 | mBytes[7] << 24;
18        l = i1 | ((long)i2 << 32);
19
20	System.out.println("values are " + Integer.toHexString(i1)
21	    + " and " + Integer.toHexString(i2));
22
23        System.out.println("First l is " + Long.toHexString(l));
24
25        l = (long)mBytes[0]
26            | (long)mBytes[1] << 8
27            | (long)mBytes[2] << 16
28            | (long)mBytes[3] << 24
29            | (long)mBytes[4] << 32
30            | (long)mBytes[5] << 40
31            | (long)mBytes[6] << 48
32            | (long)mBytes[7] << 56;
33
34        System.out.println("Second l is " + Long.toHexString(l));
35    }
36
37    static void shiftTest2()
38    {
39        long    a = 0x11;
40        long    b = 0x22;
41        long    c = 0x33;
42        long    d = 0x44;
43        long    e = 0x55;
44        long    f = 0x66;
45        long    g = 0x77;
46        long    h = 0x88;
47
48        long    result = ((a << 56) | (b << 48) | (c << 40) | (d << 32) |
49                         (e << 24) | (f << 16) | (g << 8) | h);
50
51        System.out.println("shiftTest2 l is " + Long.toHexString(result));
52    }
53
54    static void convTest()
55    {
56        float f;
57        double d;
58        int i;
59        long l;
60
61        /* float --> int */
62        f = 1234.5678f;
63        i = (int) f;
64        System.out.println("f=" + f + " --> i=" + i);
65
66        f = -1234.5678f;
67        i = (int) f;
68        System.out.println("f=" + f + " --> i=" + i);
69
70        /* double --> int */
71        d = 1234.5678;
72        i = (int) d;
73        System.out.println("d=" + d + " --> i=" + i);
74
75        d = -1234.5678;
76        i = (int) d;
77        System.out.println("d=" + d + " --> i=" + i);
78
79        /* double --> long */
80        d = 5678956789.0123;
81        l = (long) d;
82        System.out.println("d=" + d + " --> l=" + l);
83
84        d = -5678956789.0123;
85        l = (long) d;
86        System.out.println("d=" + d + " --> l=" + l);
87
88        /* int --> long */
89        i = 7654;
90        l = (long) i;
91        System.out.println("i=" + i + " --> l=" + l);
92
93        i = -7654;
94        l = (long) i;
95        System.out.println("i=" + i + " --> l=" + l);
96
97        /* long --> int (with truncation) */
98        l = 5678956789L;
99        i = (int) l;
100        System.out.println("l=" + l + " --> i=" + i);
101
102        l = -5678956789L;
103        i = (int) l;
104        System.out.println("l=" + l + " --> i=" + i);
105
106        /* int --> float */
107        i = 1234;
108        f = (float) i;
109        System.out.println("i=" + i + " --> f=" + f);
110
111        i = -1234;
112        f = (float) i;
113        System.out.println("i=" + i + " --> f=" + f);
114    }
115
116    static void unsignedShiftTest()
117    {
118        byte b = -4;
119        short s = -4;
120        char c = 0xfffc;
121        int i = -4;
122
123        b >>>= 4;
124        s >>>= 4;
125        c >>>= 4;
126        i >>>= 4;
127
128        System.out.println("b=" + b + ", s=" + s + ", c=" + (int)c + ", i=" +i);
129        System.out.println("b=0x" + Integer.toHexString((int)b)
130            + ", s=0x" + Integer.toHexString((int)s)
131            + ", c=0x" + Integer.toHexString((int)c)
132            + ", i=0x" + Integer.toHexString(i));
133    }
134
135    public static void main(String[] args) {
136        convTest();
137        shiftTest1();
138        shiftTest2();
139        unsignedShiftTest();
140    }
141}
142
143