Make the rounding rule match the baseline

README.md

@@ -423,7 +423,7 @@ If you want to use a build not available via these channels, reach out to discus
 * There is a maximum of 10,000 unique station names
 * Line endings in the file are `\n` characters on all platforms
 * Implementations must not rely on specifics of a given data set, e.g. any valid station name as per the constraints above and any data distribution (number of measurements per station) must be supported
-* The rounding of output values must be done using the semantics of IEEE 754 rounding-direction "roundTowardPositive"
+* The rounding of output values must be done by rounding to nearest, ties toward positive infinity. This does not quite match any of the IEEE 754 rounding-direction rules, but is what `Math.round()` does.
 
 ## Entering the Challenge
 

src/test/resources/samples/measurements-rounding.out

@@ -1 +1 @@
-{ham=14.6/25.5/33.6, jel=-9.0/18.0/46.5}
+{a 1.050=1.0/1.1/1.1, a-1.050=-1.1/-1.0/-1.0, b 1.025=1.0/1.0/1.1, b-1.025=-1.1/-1.0/-1.0, c 1.075=1.0/1.1/1.1, c-1.075=-1.1/-1.1/-1.0, ham=14.6/25.5/33.6, jel=-9.0/18.0/46.5}

src/test/resources/samples/measurements-rounding.txt

@@ -1,3 +1,23 @@
+a 1.050;1.0
+a 1.050;1.1
+a-1.050;-1.0
+a-1.050;-1.1
+b 1.025;1.0
+b 1.025;1.0
+b 1.025;1.0
+b 1.025;1.1
+b-1.025;-1.0
+b-1.025;-1.0
+b-1.025;-1.0
+b-1.025;-1.1
+c 1.075;1.0
+c 1.075;1.1
+c 1.075;1.1
+c 1.075;1.1
+c-1.075;-1.0
+c-1.075;-1.1
+c-1.075;-1.1
+c-1.075;-1.1
 ham;33.6
 ham;31.7
 ham;21.9