Mercurial > lasercutter

     1 /**

     2  *   Copyright (c) Rich Hickey. All rights reserved.

     3  *   The use and distribution terms for this software are covered by the

     4  *   Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)

     5  *   which can be found in the file epl-v10.html at the root of this distribution.

     6  *   By using this software in any fashion, you are agreeing to be bound by

     7  * 	 the terms of this license.

     8  *   You must not remove this notice, or any other, from this software.

     9  **/

    10 

    11 /* rich Mar 31, 2008 */

    12 

    13 package clojure.lang;

    14 

    15 import java.math.BigInteger;

    16 import java.math.BigDecimal;

    17 import java.math.MathContext;

    18 

    19 public class Ratio extends Number implements Comparable{

    20 final public BigInteger numerator;

    21 final public BigInteger denominator;

    22 

    23 public Ratio(BigInteger numerator, BigInteger denominator){

    24 	this.numerator = numerator;

    25 	this.denominator = denominator;

    26 }

    27 

    28 public boolean equals(Object arg0){

    29 	return arg0 != null

    30 	       && arg0 instanceof Ratio

    31 	       && ((Ratio) arg0).numerator.equals(numerator)

    32 	       && ((Ratio) arg0).denominator.equals(denominator);

    33 }

    34 

    35 public int hashCode(){

    36 	return numerator.hashCode() ^ denominator.hashCode();

    37 }

    38 

    39 public String toString(){

    40 	return numerator.toString() + "/" + denominator.toString();

    41 }

    42 

    43 public int intValue(){

    44 	return (int) doubleValue();

    45 }

    46 

    47 public long longValue(){

    48 	return bigIntegerValue().longValue();

    49 }

    50 

    51 public float floatValue(){

    52 	return (float)doubleValue();

    53 }

    54 

    55 public double doubleValue(){

    56 	return decimalValue(MathContext.DECIMAL64).doubleValue();

    57 }

    58 

    59 public BigDecimal decimalValue(){

    60 	return decimalValue(MathContext.UNLIMITED);

    61 }

    62 

    63 public BigDecimal decimalValue(MathContext mc){

    64 	BigDecimal numerator = new BigDecimal(this.numerator);

    65 	BigDecimal denominator = new BigDecimal(this.denominator);

    66 

    67 	return numerator.divide(denominator, mc);

    68 }

    69 

    70 public BigInteger bigIntegerValue(){

    71 	return numerator.divide(denominator);

    72 }

    73 

    74 public int compareTo(Object o){

    75 	Number other = (Number)o;

    76 	return Numbers.compare(this, other);

    77 }

    78 }
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 21 Aug 2010 06:25:44 -0400
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