Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
    
 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.
    
 Changes Copyright 2011 Google Inc.
 */

public class Main {
    /**
     * Array of powers of ten. Using double instead of float gives a tiny bit more precision.
     */
    private static final double[] pow10 = new double[128];

    private static float buildFloat(int mant, int exp) {
        if (exp < -125 || mant == 0) {
            return 0.0f;
        }

        if (exp >= 128) {
            return (mant > 0) ? Float.POSITIVE_INFINITY : Float.NEGATIVE_INFINITY;
        }

        if (exp == 0) {
            return mant;
        }

        if (mant >= (1 << 26)) {
            mant++; // round up trailing bits if they will be dropped.
        }

        return (float) ((exp > 0) ? mant * pow10[exp] : mant / pow10[-exp]);
    }
}