diff --git a/streamApp/tests/testDouble b/streamApp/tests/testDouble
index 7a6fa14..24c468d 100755
--- a/streamApp/tests/testDouble
+++ b/streamApp/tests/testDouble
@@ -45,6 +45,9 @@ set debug 0
 
 startioc
 
+set inf [format %f inf]
+set nan [format %f nan]
+
 ioccmd {dbpf DZ:test1.PROC 1}
 send "3.14159265359\n"
 assure "|3.141593|  3.141593|3.14| 3.14159  | 3.141593|+3.141593|3.1  |3.141593|\n"
@@ -56,10 +59,10 @@ send "0\n"
 assure "|0.000000|  0.000000|0.00| 0.00000  | 0.000000|+0.000000|0.0  |0.000000|\n"
 ioccmd {dbpf DZ:test1.PROC 1}
 send "NAN\n"
-assure "|nan|       nan|nan| nan      | nan|+nan|nan  |nan|\n"
+assure "|$nan|       $nan|$nan| $nan      | $nan|+$nan|$nan  |$nan|\n"
 ioccmd {dbpf DZ:test1.PROC 1}
 send "-Inf\n"
-assure "|-inf|      -inf|-inf|-inf      |-inf|-inf|-inf |-inf|\n"
+assure "|-$inf|      -$inf|-$inf|-$inf      |-$inf|-$inf|-$inf |-$inf|\n"
 ioccmd {dbpf DZ:test1.PROC 1}
 send "1e6\n"
 assure "|1000000.000000|1000000.000000|1000000.00| 1000000.00000| 1000000.000000|+1000000.000000|1000000.0|1000000.000000|\n"