d3dx9/tests: Added tests for rounding of denormalized number for D3DXFloat32To16Array.

dlls/d3dx9_36/tests/math.c

@@ -2254,6 +2254,11 @@ static void test_D3DXFloat_Array(void)
         { -NAN, 0xffff, 0xffff, -131008.0f, -131008.0f },
         { 0.0f, 0x0, 0x0, 0.0f, 0.0f },
         { -0.0f, 0x8000, 0x8000, 0.0f, 0.0f },
+        { 2.9809595e-08f, 0x0, 0x0, 0.0f, 0.0f },
+        { -2.9809595e-08f, 0x8000, 0x8000, -0.0f, -0.0f },
+        { 2.9809598e-08f, 0x1, 0x1, 5.96046e-08f, 5.96046e-08f },
+        { -2.9809598e-08f, 0x8001, 0x8001, -5.96046e-08f, -5.96046e-08f },
+        { 8.9406967e-08f, 0x2, 0x2, 1.19209e-07f, 1.19209e-07f }
     };
 
     /* exception on NULL out or in parameter */