38 lines
1.2 KiB
Java
38 lines
1.2 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.util;
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import android.compat.annotation.UnsupportedAppUsage;
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/**
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* Fast and loose math routines.
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*/
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@android.ravenwood.annotation.RavenwoodKeepWholeClass
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public class FastMath {
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/**
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* Fast round from float to int. This is faster than Math.round()
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* thought it may return slightly different results. It does not try to
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* handle (in any meaningful way) NaN or infinities.
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*/
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@UnsupportedAppUsage
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public static int round(float value) {
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long lx = (long) (value * (65536 * 256f));
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return (int) ((lx + 0x800000) >> 24);
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}
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}
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