Moved source into separate src directory due to popular request

[GpsPrune.git] / tim / prune / jpeg / drew / Rational.java

diff --git a/tim/prune/jpeg/drew/Rational.java b/tim/prune/jpeg/drew/Rational.java
deleted file mode 100644 (file)
index 8395898..0000000
--- a/tim/prune/jpeg/drew/Rational.java
+++ /dev/null
@@ -1,113 +0,0 @@
-package tim.prune.jpeg.drew;
-
-/**
- * Immutable class for holding a rational number without loss of precision.
- * Based on Drew Noakes' Metadata extractor at https://drewnoakes.com
- */
-public class Rational
-{
-       /** Holds the numerator */
-       private final long _numerator;
-
-       /** Holds the denominator */
-       private final long _denominator;
-
-       /**
-        * Creates a new (immutable) instance of Rational.
-        */
-       public Rational(long numerator, long denominator)
-       {
-               _numerator = numerator;
-               _denominator = denominator;
-       }
-
-       /**
-        * @return the value of the specified number as a <code>double</code>.
-        * This may involve rounding.
-        */
-       public double doubleValue()
-       {
-               if (_denominator == 0L) return 0.0;
-               return (double)_numerator / (double)_denominator;
-       }
-
-       /**
-        * Returns the value of the specified number as an <code>int</code>.
-        */
-       public final int intValue()
-       {
-               return (int) longValue();
-       }
-
-       /**
-        * Returns the value of the specified number as a <code>long</code>.
-        * This may involve rounding or truncation.
-        * If the denominator is 0, returns 0 to avoid dividing by 0.
-        */
-       public final long longValue()
-       {
-               if (_denominator == 0L) return 0L;
-               return _numerator / _denominator;
-       }
-
-       /** Returns the denominator */
-       public final long getDenominator()
-       {
-               return _denominator;
-       }
-
-       /** Returns the numerator */
-       public final long getNumerator()
-       {
-               return _numerator;
-       }
-
-       /**
-        * @return the value of the specified number as a positive <code>double</code>.
-        * Prevents interpretation of 32 bit numbers as negative, and forces a positive answer.
-        * Needed?
-        */
-       public double convertToPositiveValue()
-       {
-               if (_denominator == 0L) return 0.0;
-               double numeratorDbl = _numerator;
-               double denomDbl = _denominator;
-               if (_numerator >= 0L) {
-                       // Numerator is positive (but maybe denominator isn't?)
-                       return numeratorDbl / denomDbl;
-               }
-               // Add 2^32 to negative doubles to make them positive
-               final double correction = Math.pow(2.0, 32);
-               numeratorDbl += correction;
-               if (_denominator < 0L) {
-                       denomDbl += correction;
-               }
-               return numeratorDbl / denomDbl;
-       }
-
-       /**
-        * Returns a string representation of the object of form <code>numerator/denominator</code>.
-        */
-       @Override
-       public String toString()
-       {
-               return "" + _numerator + "/" + _denominator;
-       }
-
-       /**
-        * Compares two {@link Rational} instances, returning true if they are mathematically
-        * equivalent.
-        *
-        * @param obj the {@link Rational} to compare this instance to.
-        * @return true if instances are mathematically equivalent, otherwise false.  Will also
-        *         give false if <code>obj</code> is not an instance of {@link Rational}.
-        */
-       @Override
-       public boolean equals( Object obj)
-       {
-               if (obj==null || !(obj instanceof Rational))
-                       return false;
-               Rational that = (Rational) obj;
-               return this.doubleValue() == that.doubleValue();
-       }
-}