Use CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE

Change-Id: I2f6da8bb39ebd791f0bd3aa955dfc8c83b96ca04

vcl/qa/cppunit/canvasbitmaptest.cxx

@@ -155,12 +155,14 @@ void checkCanvasBitmap( const rtl::Reference<VclCanvasBitmap>& xBmp,
     CPPUNIT_ASSERT_MESSAGE( "rgb colors are not within [0,1] range",
                             std::none_of(pRGBStart,pRGBEnd,&rangeCheck));
 
-    CPPUNIT_ASSERT_MESSAGE( "First pixel is not white",
-                            rtl::math::approxEqual(pRGBStart[0].Red, 1.0) &&
-                            rtl::math::approxEqual(pRGBStart[0].Green, 1.0) &&
-                            rtl::math::approxEqual(pRGBStart[0].Blue, 1.0) );
-    CPPUNIT_ASSERT_MESSAGE( "Second pixel is not opaque",
-                            rtl::math::approxEqual(pARGBStart[1].Alpha, 1.0) );
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+        "First pixel is not white", 1.0, pRGBStart[0].Red, 1E-12);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+        "First pixel is not white", 1.0, pRGBStart[0].Green, 1E-12);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+        "First pixel is not white", 1.0, pRGBStart[0].Blue, 1E-12);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+        "Second pixel is not opaque", 1.0, pARGBStart[1].Alpha, 1E-12);
     if( aContainedBmpEx.IsTransparent() )
     {
         CPPUNIT_ASSERT_MESSAGE( "First pixel is not fully transparent",
@@ -199,10 +201,12 @@ void checkCanvasBitmap( const rtl::Reference<VclCanvasBitmap>& xBmp,
                                 xPal->getColorSpace().is());
     }
 
-    CPPUNIT_ASSERT_MESSAGE( "150th pixel is not white",
-                            rtl::math::approxEqual(pRGBStart[150].Red, 1.0) &&
-                            rtl::math::approxEqual(pRGBStart[150].Green, 1.0) &&
-                            rtl::math::approxEqual(pRGBStart[150].Blue, 1.0) );
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+        "150th pixel is not white", 1.0, pRGBStart[150].Red, 1E-12);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+        "150th pixel is not white", 1.0, pRGBStart[150].Green, 1E-12);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE(
+        "150th pixel is not white", 1.0, pRGBStart[150].Blue, 1E-12);
 
     if( nOriginalDepth > 8 )
     {