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Code Releases Activity

Rounding fix

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This commit is contained in:
Wouter Lagerweij 2017-09-17 00:53:16 +02:00
parent 01002f11e7
commit e350c8c3c3
1 changed files with 28 additions and 1 deletions
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29
app/src/main/java/info/nightscout/utils/Round.java
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@ -1,15 +1,42 @@
package info.nightscout.utils;
import android.support.annotation.NonNull;
import android.util.Log;
import java.math.BigDecimal;
/**
* Created by mike on 20.06.2016.
*/
public class Round {
public static Double roundTo(double x, Double step) {
public static Double roundTo(Double x, Double step) {
if (step > 1) {
return roundToWhole(x, step);
} else {
return roundToNrOfDecimals(x, getDecimalsFromStep(step));
}
}
private static int getDecimalsFromStep(Double step) {
String stepString = Double.toString(step);
return stepString.substring(stepString.indexOf('.') + 1).length();
}
private static Double roundToNrOfDecimals(Double x, int decimals) {
BigDecimal number = new BigDecimal(Double.toString(x));
number = number.setScale(decimals, BigDecimal.ROUND_HALF_UP);
return number.doubleValue();
}
private static Double roundToWhole(Double x, Double step) {
if (x != 0d) {
return Math.round(x / step) * step;
}
return 0d;
}
public static Double floorTo(Double x, Double step) {
if (x != 0d) {
return Math.floor(x / step) * step;