How to use

javax.measure.converter.MultiplyConverter

constructor

private static UnitConverter valueOf(double factor) {
  float asFloat = (float) factor;
  return asFloat == 1.0f ? UnitConverter.IDENTITY
      : new MultiplyConverter(factor);
}

private static UnitConverter valueOf(double factor) {
  float asFloat = (float) factor;
  return asFloat == 1.0f ? UnitConverter.IDENTITY
      : new MultiplyConverter(factor);
}

private static UnitConverter valueOf(double factor) {
  float asFloat = (float) factor;
  return asFloat == 1.0f ? UnitConverter.IDENTITY
      : new MultiplyConverter(factor);
}

@Override
public UnitConverter inverse() {
  return new MultiplyConverter(1.0 / _factor);
}

@Override
public UnitConverter inverse() {
  return new MultiplyConverter(1.0 / _factor);
}

@Override
public UnitConverter inverse() {
  return new MultiplyConverter(1.0 / _factor);
}

/**
 * Returns the result of dividing this unit by an approximate divisor.
 *
 * @param  divisor the approximate divisor.
 * @return <code>this.transform(new MultiplyConverter(1.0 / divisor))</code>
 */
public final Unit<Q> divide(double divisor) {
  return transform(new MultiplyConverter(1.0 / divisor));
}

/**
 * Returns the result of dividing this unit by an approximate divisor.
 *
 * @param  divisor the approximate divisor.
 * @return <code>this.transform(new MultiplyConverter(1.0 / divisor))</code>
 */
public final Unit<Q> divide(double divisor) {
  return transform(new MultiplyConverter(1.0 / divisor));
}

/**
 * Returns the result of multiplying this unit by a an approximate factor
 *
 * @param  factor the approximate factor (e.g. 
 *         <code>ELECTRON_MASS = KILOGRAM.times(9.10938188e-31)</code>).
 * @return <code>this.transform(new MultiplyConverter(factor))</code>
 */
public final Unit<Q> times(double factor) {
  return transform(new MultiplyConverter(factor));
}

/**
 * Returns the result of multiplying this unit by a an approximate factor
 *
 * @param  factor the approximate factor (e.g. 
 *         <code>ELECTRON_MASS = KILOGRAM.times(9.10938188e-31)</code>).
 * @return <code>this.transform(new MultiplyConverter(factor))</code>
 */
public final Unit<Q> times(double factor) {
  return transform(new MultiplyConverter(factor));
}

/**
 * Returns the result of multiplying this unit by a an approximate factor
 *
 * @param  factor the approximate factor (e.g. 
 *         <code>ELECTRON_MASS = KILOGRAM.times(9.10938188e-31)</code>).
 * @return <code>this.transform(new MultiplyConverter(factor))</code>
 */
public final Unit<Q> times(double factor) {
  return transform(new MultiplyConverter(factor));
}

/**
 * Returns the result of dividing this unit by an approximate divisor.
 *
 * @param  divisor the approximate divisor.
 * @return <code>this.transform(new MultiplyConverter(1.0 / divisor))</code>
 */
public final Unit<Q> divide(double divisor) {
  return transform(new MultiplyConverter(1.0 / divisor));
}

@Override
public UnitConverter concatenate(UnitConverter converter) {
  if (converter instanceof RationalConverter) {
    RationalConverter that = (RationalConverter) converter;
    long dividendLong = this._dividend * that._dividend;
    long divisorLong = this._divisor * that._divisor;
    double dividendDouble = ((double)this._dividend) * that._dividend;
    double divisorDouble = ((double)this._divisor) * that._divisor;
    if ((dividendLong != dividendDouble) || 
        (divisorLong != divisorDouble)) { // Long overflows.
      return new MultiplyConverter(dividendDouble / divisorDouble);
    }
    long gcd = gcd(dividendLong, divisorLong);
    return RationalConverter.valueOf(dividendLong / gcd, divisorLong / gcd);
  } else if (converter instanceof MultiplyConverter) {
    return converter.concatenate(this);
  } else {
    return super.concatenate(converter);
  }
}

@Override
public UnitConverter concatenate(UnitConverter converter) {
  if (converter instanceof RationalConverter) {
    RationalConverter that = (RationalConverter) converter;
    long dividendLong = this._dividend * that._dividend;
    long divisorLong = this._divisor * that._divisor;
    double dividendDouble = ((double)this._dividend) * that._dividend;
    double divisorDouble = ((double)this._divisor) * that._divisor;
    if ((dividendLong != dividendDouble) || 
        (divisorLong != divisorDouble)) { // Long overflows.
      return new MultiplyConverter(dividendDouble / divisorDouble);
    }
    long gcd = gcd(dividendLong, divisorLong);
    return RationalConverter.valueOf(dividendLong / gcd, divisorLong / gcd);
  } else if (converter instanceof MultiplyConverter) {
    return converter.concatenate(this);
  } else {
    return super.concatenate(converter);
  }
}

@Override
public UnitConverter concatenate(UnitConverter converter) {
  if (converter instanceof RationalConverter) {
    RationalConverter that = (RationalConverter) converter;
    long dividendLong = this._dividend * that._dividend;
    long divisorLong = this._divisor * that._divisor;
    double dividendDouble = ((double)this._dividend) * that._dividend;
    double divisorDouble = ((double)this._divisor) * that._divisor;
    if ((dividendLong != dividendDouble) || 
        (divisorLong != divisorDouble)) { // Long overflows.
      return new MultiplyConverter(dividendDouble / divisorDouble);
    }
    long gcd = gcd(dividendLong, divisorLong);
    return RationalConverter.valueOf(dividendLong / gcd, divisorLong / gcd);
  } else if (converter instanceof MultiplyConverter) {
    return converter.concatenate(this);
  } else {
    return super.concatenate(converter);
  }
}

multiplier = new MultiplyConverter(-1);
multiplier = new MultiplyConverter(-1);