48 lines
1.6 KiB
Java
48 lines
1.6 KiB
Java
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.util;
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public class TwidereMathUtils {
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private TwidereMathUtils() {
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}
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public static int clamp(final int num, final int bound1, final int bound2) {
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final int max = Math.max(bound1, bound2), min = Math.min(bound1, bound2);
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return Math.max(Math.min(num, max), min);
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}
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// Returns the next power of two.
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// Returns the input if it is already power of 2.
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// Throws IllegalArgumentException if the input is <= 0 or
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// the answer overflows.
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public static int nextPowerOf2(int n) {
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if (n <= 0 || n > 1 << 30) throw new IllegalArgumentException("n is invalid: " + n);
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n -= 1;
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n |= n >> 16;
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n |= n >> 8;
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n |= n >> 4;
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n |= n >> 2;
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n |= n >> 1;
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return n + 1;
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}
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}
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