1 /* 2 * Copyright (C) 2017 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 * The methods that are intrinsified in Long and their expected redefined implementations. 19 */ 20 class RedefinedLongIntrinsics { 21 // Intrinsic! Do something cool. Return i + 1 highestOneBit(long i)22 public static long highestOneBit(long i) { 23 return i + 1; 24 } 25 26 // Intrinsic! Do something cool. Return i - 1 lowestOneBit(long i)27 public static long lowestOneBit(long i) { 28 return i - 1; 29 } 30 31 // Intrinsic! Do something cool. Return i + i numberOfLeadingZeros(long i)32 public static int numberOfLeadingZeros(long i) { 33 return (int)(i + i); 34 } 35 36 // Intrinsic! Do something cool. Return i & (i >>> 1); numberOfTrailingZeros(long i)37 public static int numberOfTrailingZeros(long i) { 38 return (int)(i & (i >>> 1)); 39 } 40 41 // Intrinsic! Do something cool. Return 5 bitCount(long i)42 public static int bitCount(long i) { 43 return 5; 44 } 45 46 // Intrinsic! Do something cool. Return i rotateLeft(long i, int distance)47 public static long rotateLeft(long i, int distance) { 48 return i; 49 } 50 51 // Intrinsic! Do something cool. Return 10 * i rotateRight(long i, int distance)52 public static long rotateRight(long i, int distance) { 53 return 10 * i; 54 } 55 56 // Intrinsic! Do something cool. Return -i reverse(long i)57 public static long reverse(long i) { 58 return -i; 59 } 60 61 // Intrinsic! Do something cool. Return 0 signum(long i)62 public static int signum(long i) { 63 return 0; 64 } 65 66 // Intrinsic! Do something cool. Return 0 reverseBytes(long i)67 public static long reverseBytes(long i) { 68 return 0; 69 } 70 } 71