/*
* Copyright ( C ) 2006 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
/**
* Test arithmetic operations .
*/
public class Main {
static void shiftTest1()
{
final int [] mBytes = {
0 x11, 0 x22, 0 x33, 0 x44, 0 x88, 0 x99, 0 xaa, 0 xbb
};
long l;
int i1, i2;
i1 = mBytes[0 ] | mBytes[1 ] << 8 | mBytes[2 ] << 16 | mBytes[3 ] << 24 ;
i2 = mBytes[4 ] | mBytes[5 ] << 8 | mBytes[6 ] << 16 | mBytes[7 ] << 24 ;
l = i1 | ((long )i2 << 32 );
System.out.println("values are " + Integer.toHexString(i1)
+ " and " + Integer.toHexString(i2));
System.out.println("First l is " + Long .toHexString(l));
l = (long )mBytes[0 ]
| (long )mBytes[1 ] << 8
| (long )mBytes[2 ] << 16
| (long )mBytes[3 ] << 24
| (long )mBytes[4 ] << 32
| (long )mBytes[5 ] << 40
| (long )mBytes[6 ] << 48
| (long )mBytes[7 ] << 56 ;
System.out.println("Second l is " + Long .toHexString(l));
}
static void shiftTest2()
{
long a = 0 x11;
long b = 0 x22;
long c = 0 x33;
long d = 0 x44;
long e = 0 x55;
long f = 0 x66;
long g = 0 x77;
long h = 0 x88;
long result = ((a << 56 ) | (b << 48 ) | (c << 40 ) | (d << 32 ) |
(e << 24 ) | (f << 16 ) | (g << 8 ) | h);
System.out.println("shiftTest2 l is " + Long .toHexString(result));
}
static void convTest()
{
float f;
double d;
int i;
long l;
/* float --> int */
f = 1234 .5678 f;
i = (int ) f;
System.out.println("f=" + f + " --> i=" + i);
f = -1234 .5678 f;
i = (int ) f;
System.out.println("f=" + f + " --> i=" + i);
/* double --> int */
d = 1234 .5678 ;
i = (int ) d;
System.out.println("d=" + d + " --> i=" + i);
d = -1234 .5678 ;
i = (int ) d;
System.out.println("d=" + d + " --> i=" + i);
/* double --> long */
d = 5678956789 .0123 ;
l = (long ) d;
System.out.println("d=" + d + " --> l=" + l);
d = -5678956789 .0123 ;
l = (long ) d;
System.out.println("d=" + d + " --> l=" + l);
/* int --> long */
i = 7654 ;
l = (long ) i;
System.out.println("i=" + i + " --> l=" + l);
i = -7654 ;
l = (long ) i;
System.out.println("i=" + i + " --> l=" + l);
/* long --> int (with truncation) */
l = 5678956789 L;
i = (int ) l;
System.out.println("l=" + l + " --> i=" + i);
l = -5678956789 L;
i = (int ) l;
System.out.println("l=" + l + " --> i=" + i);
/* int --> float */
i = 1234 ;
f = (float ) i;
System.out.println("i=" + i + " --> f=" + f);
i = -1234 ;
f = (float ) i;
System.out.println("i=" + i + " --> f=" + f);
}
static void unsignedShiftTest()
{
byte b = -4 ;
short s = -4 ;
char c = 0 xfffc;
int i = -4 ;
b >>>= 4 ;
s >>>= 4 ;
c >>>= 4 ;
i >>>= 4 ;
System.out.println("b=" + b + ", s=" + s + ", c=" + (int )c + ", i=" +i);
System.out.println("b=0x" + Integer.toHexString((int )b)
+ ", s=0x" + Integer.toHexString((int )s)
+ ", c=0x" + Integer.toHexString((int )c)
+ ", i=0x" + Integer.toHexString(i));
}
public static void main(String[] args) {
convTest();
shiftTest1();
shiftTest2();
unsignedShiftTest();
}
}
Messung V0.5 in Prozent C=92 H=94 G=92
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-29)
¤
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