Mercurial > dive4elements > river
diff flys-backend/src/main/java/de/intevation/flys/utils/EpsilonComparator.java @ 4735:94b39073f0f7
Moved EpsilonComparator to utils package becaus its not only useful for TIM parsing. Used EpsilonComparator in DA60 and DA66 case. Maybe TODO: Use in PRF, too.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Tue, 01 Jan 2013 13:54:08 +0100 |
| parents | flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/EpsilonComparator.java@7fdddc6ba296 |
| children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-backend/src/main/java/de/intevation/flys/utils/EpsilonComparator.java Tue Jan 01 13:54:08 2013 +0100 @@ -0,0 +1,25 @@ +package de.intevation.flys.utils; + +import java.util.Comparator; + +public class EpsilonComparator implements Comparator<Double> +{ + public static final double EPSILON = 1e-4; + + public static final EpsilonComparator CMP = new EpsilonComparator(EPSILON); + + private double epsilon; + + public EpsilonComparator(double epsilon) { + this.epsilon = epsilon; + } + + @Override + public int compare(Double a, Double b) { + double diff = a - b; + if (diff < -epsilon) return -1; + if (diff > epsilon) return +1; + return 0; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :