Added source Matlab code for reference

matlab/parallel/proportion2str.m

@@ -0,0 +1,18 @@
+function str = proportion2str(prob)
+%prob belongs to [0.00, 0.01, ... ,1]. 
+%str is a 4-mark presentation of proportion.
+
+if abs(prob)<1e-3
+    str = '0.00';
+elseif abs(prob-1) < 1e-3;
+    str = '1.00';
+else
+    prob = round(100*prob);
+    if prob<10
+        str = ['0.0' num2str(prob)];    
+    else
+        str = ['0.' num2str(prob)];
+    end;        
+end;
+
+%-------------------------------------------------------