putting test in the HR calculationto stay compatible with the algo usage

app/src/main/java/uk/org/openseizuredetector/SdAlgHr.java

@@ -104,10 +104,12 @@ public class SdAlgHr {
          * Check heart rate value against simple thresholds
          */
         boolean retVal = false;
+        if (mSimpleHrAlarmActive) {
             if ((hrVal > mSimpleHrAlarmThreshMax)
                     || (hrVal < mSimpleHrAlarmThreshMin)) {
                 retVal = true;
             }
+        }
         return (retVal);
     }
 
@@ -145,6 +147,8 @@ public class SdAlgHr {
     private boolean checkAdaptiveHr(double hrVal) {
         boolean retVal;
         retVal = false;
+        
+        if (mAdaptiveHrAlarmActive) {
             double hrThreshMin;
             double hrThreshMax;
             double avHr = getAdaptiveHrAverage();
@@ -159,12 +163,14 @@ public class SdAlgHr {
                 retVal = true;
             }
             Log.d(TAG, "checkAdaptiveHr() - hrVal=" + hrVal + ", avHr=" + avHr + ", thresholds=(" + hrThreshMin + ", " + hrThreshMax + "): Alarm=" + retVal);
+        }
         return (retVal);
     }
 
     private boolean checkAverageHr(double hrVal) {
         boolean retVal;
         retVal = false;
+        if (mAverageHrAlarmActive) {
             double avHr = getAverageHrAverage();
             if (avHr < mAverageHrAlarmThreshMin) {
                 retVal = true;
@@ -173,6 +179,7 @@ public class SdAlgHr {
                 retVal = true;
             }
             Log.d(TAG, "checkAverageHr() - hrVal=" + hrVal + ", avHr=" + avHr + ", thresholds=(" + mAverageHrAlarmThreshMin + ", " + mAverageHrAlarmThreshMin + "): Alarm=" + retVal);
+        }
         return (retVal);
     }
 
@@ -189,15 +196,10 @@ public class SdAlgHr {
         mAverageHrBuff.add(hrVal);
         mHrHist.add(hrVal);
         ArrayList<Boolean> retVal = new ArrayList<Boolean>();
-        if (mSimpleHrAlarmActive) {
         retVal.add(checkSimpleHr(hrVal));
-        }
-        if (mAdaptiveHrAlarmActive) {
         retVal.add(checkAdaptiveHr(hrVal));
-        }
-        if (mAverageHrAlarmActive) {
         retVal.add(checkAverageHr(hrVal));
-        }
+        
         return (retVal);
     }