Java Number Power pow2ByteIndex(final int x)

Description

pow Byte Index

License

Apache License

Declaration

public static byte pow2ByteIndex(final int x) 

Method Source Code

//package com.java2s;
/*/*  w w w .j  a v a 2s  . c o  m*/
 * Copyright 2015 the original author or authors.
 *
 * 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.
 */

public class Main {
    private static final byte[] BYTEPOW2 = new byte[] { 1, 2, 4, 8, 16, 32, 64 };

    public static byte pow2ByteIndex(final int x) {
        if (x < 0 || x > 7)
            throw new IllegalArgumentException(
                    "Unsupported Value [" + x + "]. Only supported for values between 0 and 30 inclusive");
        return BYTEPOW2[x];
    }
}

Related

1. pow2(final int x)
2. pow2(int c)
3. pow2(int i)
4. pow2(long x)
5. Pow2(Object in, double val)
6. pow3_strict(final float a)
7. pow4(double val)
8. pow9(final double x)
9. powDecay(double x, double y)