public staticString doubleToString()

in samoa-api/src/main/java/org/apache/samoa/moa/core/Utils.java [240:287]
45 lines of code
15 McCabe index (conditional complexity)

  public static/* @pure@ */String doubleToString(double value, int afterDecimalPoint) {

    StringBuffer stringBuffer;
    double temp;
    int dotPosition;
    long precisionValue;

    temp = value * Math.pow(10.0, afterDecimalPoint);
    if (Math.abs(temp) < Long.MAX_VALUE) {
      precisionValue = (temp > 0) ? (long) (temp + 0.5)
          : -(long) (Math.abs(temp) + 0.5);
      if (precisionValue == 0) {
        stringBuffer = new StringBuffer(String.valueOf(0));
      } else {
        stringBuffer = new StringBuffer(String.valueOf(precisionValue));
      }
      if (afterDecimalPoint == 0) {
        return stringBuffer.toString();
      }
      dotPosition = stringBuffer.length() - afterDecimalPoint;
      while (((precisionValue < 0) && (dotPosition < 1)) ||
          (dotPosition < 0)) {
        if (precisionValue < 0) {
          stringBuffer.insert(1, '0');
        } else {
          stringBuffer.insert(0, '0');
        }
        dotPosition++;
      }
      stringBuffer.insert(dotPosition, '.');
      if ((precisionValue < 0) && (stringBuffer.charAt(1) == '.')) {
        stringBuffer.insert(1, '0');
      } else if (stringBuffer.charAt(0) == '.') {
        stringBuffer.insert(0, '0');
      }
      int currentPos = stringBuffer.length() - 1;
      while ((currentPos > dotPosition) &&
          (stringBuffer.charAt(currentPos) == '0')) {
        stringBuffer.setCharAt(currentPos--, ' ');
      }
      if (stringBuffer.charAt(currentPos) == '.') {
        stringBuffer.setCharAt(currentPos, ' ');
      }

      return stringBuffer.toString().trim();
    }
    return new String("" + value);
  }