Java Base Encode toBase2SuffixedString(long n)

Description

to Base Suffixed String

License

Apache License

Declaration

public static String toBase2SuffixedString(long n) 

Method Source Code

//package com.java2s;
/* /*from   www .jav a  2s .  c o  m*/
 * Copyright 2015 Terracotta, Inc., a Software AG company.
 *
 * 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 String[] BASE_2_SUFFIXES = new String[] { "", "K", "M", "G", "T", "P", "E" };

    public static String toBase2SuffixedString(long n) {
        if (n > 0 && Long.bitCount(n) == 1) {
            int i = Long.numberOfTrailingZeros(Math.abs(n)) / 10;
            return (n >> (i * 10)) + BASE_2_SUFFIXES[i];
        } else {
            int i = (63 - Long.numberOfLeadingZeros(n)) / 10;

            long factor = 1L << (i * 10);
            long leading = n / factor;
            long decimalFactor = factor / 10;
            if (decimalFactor == 0) {
                return leading + BASE_2_SUFFIXES[i];
            } else {
                long decimal = (n - (leading * factor)) / (factor / 10);
                return leading + "." + decimal + BASE_2_SUFFIXES[i];
            }
        }
    }
}

Related

1. toBase16(byte[] data)
2. toBase16(int[] arr)
3. ToBase16(StringBuilder str, byte[] data)
4. toBase2(byte b)
5. toBase26(int number)
6. toBase32Char(int i)
7. toBase36(int decimalNumber)
8. toBase36(long l)
9. toBase36(long num)