From b2ef4e090472267748fcf92275a890825f45a1c3 Mon Sep 17 00:00:00 2001
From: omenem <omenem@usi.ch>
Date: Wed, 27 May 2020 14:50:14 +0200
Subject: [PATCH] fix

---
 .../smarthut/service/ThermostatService.java   | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java
index 0fea6b0..ad98717 100644
--- a/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java
+++ b/src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/ThermostatService.java
@@ -5,6 +5,7 @@ import ch.usi.inf.sa4.sanmarinoes.smarthut.models.ThermostatRepository;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.socket.SensorSocketEndpoint;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.utils.Utils;
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.List;
 import java.util.Optional;
 import java.util.Random;
@@ -38,12 +39,18 @@ public class ThermostatService {
 
     private void randomJitter(Thermostat thermostat) {
 
-        double x;
-        x =
-                (ran.nextInt(thermostat.getTypical().intValue()) + thermostat.getErr().intValue())
-                                * 0.975
-                        + 1;
-        updateValueForThermostat(thermostat, BigDecimal.valueOf(x));
+        BigDecimal x =
+                thermostat
+                        .getTypical()
+                        .subtract(
+                                thermostat
+                                        .getErr()
+                                        .divide(BigDecimal.valueOf(2), RoundingMode.CEILING))
+                        .add(
+                                BigDecimal.valueOf(
+                                        ran.nextDouble() * thermostat.getErr().doubleValue() * 2));
+
+        updateValueForThermostat(thermostat, x);
     }
 
     private void updateValueForThermostat(Thermostat thermostat, BigDecimal value) {