1 /* 2 * Copyright (C) 2013 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 public class Main { 18 static final long NUM_ITERATIONS = 50000; 19 static volatile double negInfinity = Double.NEGATIVE_INFINITY; 20 21 public static void main(String args[]) { 22 test1(); 23 test2(); 24 test3(); 25 } 26 27 public static void test1() { 28 29 long sumInf = 0; 30 long sumRes = 0; 31 32 for (long i = 0 ; i < NUM_ITERATIONS ; i++) { 33 //Every second iteration, sumInf becomes 0 34 sumInf += (long) negInfinity; 35 36 //Some extra work for compilers to make this 37 //loop seem important 38 if (sumInf == Long.MIN_VALUE) { 39 sumRes++; 40 } 41 } 42 43 if (sumRes == NUM_ITERATIONS / 2) { 44 System.out.println("Iteration Result is as expected"); 45 } else { 46 System.out.println("Conversions failed over " + NUM_ITERATIONS + " iterations"); 47 } 48 } 49 50 public static void test2() { 51 long a = 1L; 52 long b = 2L; 53 54 float inter3 = a; 55 float inter4 = b; 56 System.out.println("inter4:" + inter4); 57 } 58 59 public static void test3() { 60 double d = Long.MAX_VALUE; 61 System.out.println("max_long:" + (long)d); 62 } 63 64 } 65
