1 /* 2 * Copyright (C) 2007 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 package com.android.internal.util; 18 19 /** 20 * Fast and loose math routines. 21 */ 22 public class FastMath { 23 24 /** 25 * Fast round from float to int. This is faster than Math.round() 26 * thought it may return slightly different results. It does not try to 27 * handle (in any meaningful way) NaN or infinities. 28 */ round(float value)29 public static int round(float value) { 30 long lx = (long) (value * (65536 * 256f)); 31 return (int) ((lx + 0x800000) >> 24); 32 } 33 } 34