Index: trunk/psLib/test/math/tap_psHist02.c
===================================================================
--- trunk/psLib/test/math/tap_psHist02.c	(revision 10813)
+++ trunk/psLib/test/math/tap_psHist02.c	(revision 12094)
@@ -35,6 +35,6 @@
 
         psHistogram *myHist = psHistogramAlloc(lower, higher, numBins );
-        myHist = psVectorHistogram( myHist, myData, NULL, NULL, 0 );
-        ok(myHist != NULL, "psVectorHistogram() returned a non-NULL psHistogram");
+        bool rc = psVectorHistogram( myHist, myData, NULL, NULL, 0 );
+        ok(rc == false, "psVectorHistogram() returned TRUE");
         skip_start(myHist == NULL, 1, "Skipping tests because psVectorHistogram() returned NULL");
 
@@ -80,6 +80,6 @@
         }
         psHistogram *myHist = psHistogramAlloc(lower, higher, numBins );
-        myHist = psVectorHistogram(myHist, myData, NULL, myMask, 1);
-        ok(myHist != NULL, "psVectorHistogram() returned a non-NULL psHistogram");
+        bool rc = psVectorHistogram(myHist, myData, NULL, myMask, 1);
+        ok(rc == false, "psVectorHistogram() returned TRUE");
         skip_start(myHist == NULL, 1, "Skipping tests because psVectorHistogram() returned NULL");
 
@@ -123,5 +123,6 @@
             myData->data.F32[ i ] = lower + ( ( higher - lower ) / ( float ) NUM_DATA ) * ( float ) i;
         }
-        ok(NULL == psVectorHistogram( NULL, myData, NULL, NULL, 0 ), "psVectorHistogram() returned NULL with a NULL psHistogram input");
+        ok(false == psVectorHistogram( NULL, myData, NULL, NULL, 0 ),
+          "psVectorHistogram() returned FALSE with a NULL psHistogram input");
         psFree( myData );
         ok(!psMemCheckLeaks (id, NULL, NULL, false), "no memory leaks");
@@ -135,5 +136,6 @@
         psMemId id = psMemGetId();
         psHistogram *myHist = psHistogramAlloc(lower, higher, numBins );
-        ok(NULL != psVectorHistogram( myHist, NULL, NULL, NULL, 0 ), "psVectorHistogram() returns non-NULL with a NULL input array");
+        ok(true == psVectorHistogram( myHist, NULL, NULL, NULL, 0 ),
+          "psVectorHistogram() returns TRUE with a NULL input array");
         psFree(myHist);
         ok(!psMemCheckLeaks (id, NULL, NULL, false), "no memory leaks");
@@ -149,6 +151,6 @@
         psVector *myData = psVectorAlloc(0, PS_TYPE_F32);
         psHistogram *myHist = psHistogramAlloc(lower, higher, numBins);
-        myHist = psVectorHistogram(myHist, NULL, NULL, NULL, 0);
-        ok(NULL != psVectorHistogram( myHist, NULL, NULL, NULL, 0 ), "psVectorHistogram() returns non-NULL with an empty input array");
+        ok(true == psVectorHistogram( myHist, NULL, NULL, NULL, 0 ),
+          "psVectorHistogram() returns TRUE with an empty input array");
         psFree(myHist);
         psFree(myData);