Android Open Source - ByakuGallery Math Utils

From Project

Back to project page ByakuGallery.

License

The source code is released under:

Apache License

If you think the Android project ByakuGallery listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

/*
 * Copyright (C) 2010 The Android Open Source Project
 *//from  w  w w .  j  a v  a 2  s .  c om
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.diegocarloslima.byakugallery.lib;

public class MathUtils {
  
  public static int ceilLog2(float value) {
    int i;
    for (i = 0; i < 31; i++) {
      if ((1 << i) >= value) break;
    }
    return i;
  }

  public static int floorLog2(float value) {
    int i;
    for (i = 0; i < 31; i++) {
      if ((1 << i) > value) break;
    }
    return i - 1;
  }

  // Returns the input value x clamped to the range [min, max].
  public static int clamp(int x, int min, int max) {
    if (x > max) return max;
    if (x < min) return min;
    return x;
  }

  // Returns the input value x clamped to the range [min, max].
  public static float clamp(float x, float min, float max) {
    if (x > max) return max;
    if (x < min) return min;
    return x;
  }

  // Returns the input value x clamped to the range [min, max].
  public static long clamp(long x, long min, long max) {
    if (x > max) return max;
    if (x < min) return min;
    return x;
  }
}

Java Source Code List