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      1 /*
      2  * Copyright (C) 2006 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 /**
     18  * Test arithmetic operations.
     19  */
     20 public class Main {
     21 
     22     static void shiftTest1()
     23     {
     24         final int[] mBytes = {
     25             0x11, 0x22, 0x33, 0x44, 0x88, 0x99, 0xaa, 0xbb
     26         };
     27         long l;
     28         int i1, i2;
     29 
     30         i1 = mBytes[0] | mBytes[1] << 8 | mBytes[2] << 16 | mBytes[3] << 24;
     31         i2 = mBytes[4] | mBytes[5] << 8 | mBytes[6] << 16 | mBytes[7] << 24;
     32         l = i1 | ((long)i2 << 32);
     33 
     34 	System.out.println("values are " + Integer.toHexString(i1)
     35 	    + " and " + Integer.toHexString(i2));
     36 
     37         System.out.println("First l is " + Long.toHexString(l));
     38 
     39         l = (long)mBytes[0]
     40             | (long)mBytes[1] << 8
     41             | (long)mBytes[2] << 16
     42             | (long)mBytes[3] << 24
     43             | (long)mBytes[4] << 32
     44             | (long)mBytes[5] << 40
     45             | (long)mBytes[6] << 48
     46             | (long)mBytes[7] << 56;
     47 
     48         System.out.println("Second l is " + Long.toHexString(l));
     49     }
     50 
     51     static void shiftTest2()
     52     {
     53         long    a = 0x11;
     54         long    b = 0x22;
     55         long    c = 0x33;
     56         long    d = 0x44;
     57         long    e = 0x55;
     58         long    f = 0x66;
     59         long    g = 0x77;
     60         long    h = 0x88;
     61 
     62         long    result = ((a << 56) | (b << 48) | (c << 40) | (d << 32) |
     63                          (e << 24) | (f << 16) | (g << 8) | h);
     64 
     65         System.out.println("shiftTest2 l is " + Long.toHexString(result));
     66     }
     67 
     68     static void convTest()
     69     {
     70         float f;
     71         double d;
     72         int i;
     73         long l;
     74 
     75         /* float --> int */
     76         f = 1234.5678f;
     77         i = (int) f;
     78         System.out.println("f=" + f + " --> i=" + i);
     79 
     80         f = -1234.5678f;
     81         i = (int) f;
     82         System.out.println("f=" + f + " --> i=" + i);
     83 
     84         /* double --> int */
     85         d = 1234.5678;
     86         i = (int) d;
     87         System.out.println("d=" + d + " --> i=" + i);
     88 
     89         d = -1234.5678;
     90         i = (int) d;
     91         System.out.println("d=" + d + " --> i=" + i);
     92 
     93         /* double --> long */
     94         d = 5678956789.0123;
     95         l = (long) d;
     96         System.out.println("d=" + d + " --> l=" + l);
     97 
     98         d = -5678956789.0123;
     99         l = (long) d;
    100         System.out.println("d=" + d + " --> l=" + l);
    101 
    102         /* int --> long */
    103         i = 7654;
    104         l = (long) i;
    105         System.out.println("i=" + i + " --> l=" + l);
    106 
    107         i = -7654;
    108         l = (long) i;
    109         System.out.println("i=" + i + " --> l=" + l);
    110 
    111         /* long --> int (with truncation) */
    112         l = 5678956789L;
    113         i = (int) l;
    114         System.out.println("l=" + l + " --> i=" + i);
    115 
    116         l = -5678956789L;
    117         i = (int) l;
    118         System.out.println("l=" + l + " --> i=" + i);
    119 
    120         /* int --> float */
    121         i = 1234;
    122         f = (float) i;
    123         System.out.println("i=" + i + " --> f=" + f);
    124 
    125         i = -1234;
    126         f = (float) i;
    127         System.out.println("i=" + i + " --> f=" + f);
    128     }
    129 
    130     static void unsignedShiftTest()
    131     {
    132         byte b = -4;
    133         short s = -4;
    134         char c = 0xfffc;
    135         int i = -4;
    136 
    137         b >>>= 4;
    138         s >>>= 4;
    139         c >>>= 4;
    140         i >>>= 4;
    141 
    142         System.out.println("b=" + b + ", s=" + s + ", c=" + (int)c + ", i=" +i);
    143         System.out.println("b=0x" + Integer.toHexString((int)b)
    144             + ", s=0x" + Integer.toHexString((int)s)
    145             + ", c=0x" + Integer.toHexString((int)c)
    146             + ", i=0x" + Integer.toHexString(i));
    147     }
    148 
    149     public static void main(String[] args) {
    150         convTest();
    151         shiftTest1();
    152         shiftTest2();
    153         unsignedShiftTest();
    154     }
    155 }
    156