Add bitmask function

functions.lsl

@@ -378,3 +378,24 @@ string inv2Perms(string inventory, integer iMask)
         output += "none";
     return  output;
 }
+
+
+/*
+    Usage:  i = mask (SET, i, BITMASK)
+            i = mask (FALSE, i, BITMASK)
+*/
+integer mask(integer states, integer source, integer mask)
+{
+    if(states==TOGGLE)
+    {
+        return source ^ mask;
+    }
+    if(states)
+    {
+        source = source | mask;
+        return source;
+    }else {
+        source = source &~ mask;
+        return source;
+    }
+}

variables.lsl

@@ -18,3 +18,7 @@ integer THIRTY_DAYS = 2592000; //(((60*60)*24)*30);
 
 list g_lCheckboxes = ["□","▣"];
 list g_lDSRequests;
+
+integer TOGGLE = 2;
+integer SET=1;
+integer UNSET=0;