package org.djunits.value.vdouble.scalar.base;
   
   import org.djunits.unit.Unit;
   import org.djunits.value.Absolute;
   import org.djunits.value.AbstractScalar;
   import org.djunits.value.formatter.Format;
   import org.djunits.value.util.ValueUtil;
   
   /**
   * The most basic abstract class for the DoubleScalar.
   * <p>
   * Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
   * BSD-style license. See <a href="https://djunits.org/docs/license.html">DJUNITS License</a>.
   * </p>
   * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   * @author <a href="https://www.tudelft.nl/staff/p.knoppers/">Peter Knoppers</a>
   * @param <U> the unit
   * @param <S> the type
   */
  public abstract class AbstractDoubleScalar<U extends Unit<U>, S extends AbstractDoubleScalar<U, S>> extends AbstractScalar<U, S>
          implements DoubleScalarInterface<U, S>
  {
      /** */
      private static final long serialVersionUID = 20161015L;
  
      /** The value, stored in the standard SI unit. */
      @SuppressWarnings("checkstyle:visibilitymodifier")
      public final double si;
  
      /**
       * Construct a new AbstractDoubleScalar.
       * @param unit U; the unit
       * @param si double; the si value to store
       */
      AbstractDoubleScalar(final U unit, final double si)
      {
          super(unit);
          this.si = si;
      }
  
      /** {@inheritDoc} */
      @Override
      public final double getSI()
      {
          return this.si;
      }
  
      /** {@inheritDoc} */
      @Override
      public final double getInUnit()
      {
          return ValueUtil.expressAsUnit(getSI(), getDisplayUnit());
      }
  
      /** {@inheritDoc} */
      @Override
      public final double getInUnit(final U targetUnit)
      {
          return ValueUtil.expressAsUnit(getSI(), targetUnit);
      }
  
      /** {@inheritDoc} */
      @Override
      public final boolean lt(final S o)
      {
          return this.getSI() < o.getSI();
      }
  
      /** {@inheritDoc} */
      @Override
      public final boolean le(final S o)
      {
          return this.getSI() <= o.getSI();
      }
  
      /** {@inheritDoc} */
      @Override
      public final boolean gt(final S o)
      {
          return this.getSI() > o.getSI();
      }
  
      /** {@inheritDoc} */
      @Override
      public final boolean ge(final S o)
      {
          return this.getSI() >= o.getSI();
      }
  
      /** {@inheritDoc} */
      @Override
      public final boolean eq(final S o)
      {
          return this.getSI() == o.getSI();
      }
  
      /** {@inheritDoc} */
      @Override
      public final boolean ne(final S o)
     {
         return this.getSI() != o.getSI();
     }
 
     /** {@inheritDoc} */
     @Override
     public final boolean lt0()
     {
         return this.getSI() < 0.0;
     }
 
     /** {@inheritDoc} */
     @Override
     public final boolean le0()
     {
         return this.getSI() <= 0.0;
     }
 
     /** {@inheritDoc} */
     @Override
     public final boolean gt0()
     {
         return this.getSI() > 0.0;
     }
 
     /** {@inheritDoc} */
     @Override
     public final boolean ge0()
     {
         return this.getSI() >= 0.0;
     }
 
     /** {@inheritDoc} */
     @Override
     public final boolean eq0()
     {
         return this.getSI() == 0.0;
     }
 
     /** {@inheritDoc} */
     @Override
     public final boolean ne0()
     {
         return this.getSI() != 0.0;
     }
 
     /** {@inheritDoc} */
     @Override
     public final int compareTo(final S o)
     {
         return Double.compare(this.getSI(), o.getSI());
     }
 
     /** {@inheritDoc} */
     @Override
     public int intValue()
     {
         return (int) this.getSI();
     }
 
     /** {@inheritDoc} */
     @Override
     public long longValue()
     {
         return (long) this.getSI();
     }
 
     /** {@inheritDoc} */
     @Override
     public float floatValue()
     {
         return (float) this.getSI();
     }
 
     /** {@inheritDoc} */
     @Override
     public double doubleValue()
     {
         return this.getSI();
     }
 
     /**********************************************************************************/
     /********************************* GENERIC METHODS ********************************/
     /**********************************************************************************/
 
     /** {@inheritDoc} */
     @Override
     protected Object clone() throws CloneNotSupportedException
     {
         return super.clone();
     }
 
     /** {@inheritDoc} */
     @Override
     public final String toString()
     {
         return toString(getDisplayUnit(), false, true);
     }
 
     /** {@inheritDoc} */
     @Override
     public final String toString(final U displayUnit)
     {
         return toString(displayUnit, false, true);
     }
 
     /** {@inheritDoc} */
     @Override
     public final String toString(final boolean verbose, final boolean withUnit)
     {
         return toString(getDisplayUnit(), verbose, withUnit);
     }
 
     /** {@inheritDoc} */
     @Override
     public final String toString(final U displayUnit, final boolean verbose, final boolean withUnit)
     {
         StringBuffer buf = new StringBuffer();
         if (verbose)
         {
             buf.append(this instanceof Absolute ? "Abs " : "Rel ");
         }
         double d = ValueUtil.expressAsUnit(getSI(), displayUnit);
         buf.append(Format.format(d));
         if (withUnit)
         {
             buf.append(" "); // Insert one space as prescribed by SI writing conventions
             buf.append(displayUnit.getDefaultDisplayAbbreviation());
         }
         return buf.toString();
     }
 
     /** {@inheritDoc} */
     @Override
     @SuppressWarnings("checkstyle:designforextension")
     public int hashCode()
     {
         final int prime = 31;
         int result = getDisplayUnit().getStandardUnit().hashCode();
         long temp;
         temp = Double.doubleToLongBits(this.getSI());
         result = prime * result + (int) (temp ^ (temp >>> 32));
         return result;
     }
 
     /** {@inheritDoc} */
     @Override
     @SuppressWarnings({"checkstyle:designforextension", "checkstyle:needbraces", "unchecked"})
     public boolean equals(final Object obj)
     {
         if (this == obj)
             return true;
         if (obj == null)
             return false;
         if (getClass() != obj.getClass())
             return false;
         AbstractDoubleScalar<U, S> other = (AbstractDoubleScalar<U, S>) obj;
         if (!getDisplayUnit().getStandardUnit().equals(other.getDisplayUnit().getStandardUnit()))
             return false;
         if (Double.doubleToLongBits(this.getSI()) != Double.doubleToLongBits(other.getSI()))
             return false;
         return true;
     }
 
 }