org.apache.hadoop.util.FastNumberFormat Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.util;
/**
* Fast thread-safe version of NumberFormat
*/
public class FastNumberFormat {
public static StringBuilder format(StringBuilder sb, long value, int minimumDigits) {
if (value < 0) {
sb.append('-');
value = -value;
}
long tmp = value;
do {
tmp /= 10;
} while (--minimumDigits > 0 && tmp > 0);
for (int i = minimumDigits; i > 0; --i) {
sb.append('0');
}
sb.append(value);
return sb;
}
}