[PATCH] Implement D3DXVec2Dot with a test

[David Adam]

---
 dlls/d3dx8/tests/math.c |   20 ++++++++++++++++----
 include/d3dx8math.h     |    1 +
 include/d3dx8math.inl   |    6 ++++++
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/dlls/d3dx8/tests/math.c b/dlls/d3dx8/tests/math.c
index d8d677c..e70ae07 100644
--- a/dlls/d3dx8/tests/math.c
+++ b/dlls/d3dx8/tests/math.c
@@ -26,10 +26,23 @@
=20
 static void D3X8Vector2Test(void)
 {
-    D3DXVECTOR2 u;
+    D3DXVECTOR2 u,v;
     FLOAT expected, got;
=20
     u.x=3D3.0f; u.y=3D4.0f;
+    v.x=3D-7.0f; v.y=3D9.0f;
+
+/*_______________D3DXVec2Dot__________________________*/
+   expected =3D 15.0f;
+   got =3D D3DXVec2Dot(&u,&v);
+   ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", e=
xpected, got);
+   /* Tests the case NULL */
+    expected=3D0.0f;
+    got =3D D3DXVec2Dot(NULL,&v);
+    ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", =
expected, got);
+    expected=3D0.0f;
+    got =3D D3DXVec2Dot(NULL,NULL);
+    ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", =
expected, got);
=20
 /*_______________D3DXVec2Length__________________________*/
    expected =3D 5.0f;
@@ -37,17 +50,16 @@ static void D3X8Vector2Test(void)
    ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", e=
xpected, got);
    /* Tests the case NULL */
     expected=3D0.0f;
-    got=3D D3DXVec2Length(NULL);
+    got =3D D3DXVec2Length(NULL);
     ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", =
expected, got);
=20
-
 /*_______________D3DXVec2LengthSq________________________*/
    expected =3D 25.0f;
    got =3D D3DXVec2LengthSq(&u);
    ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", e=
xpected, got);
    /* Tests the case NULL */
     expected=3D0.0f;
-    got=3D D3DXVec2LengthSq(NULL);
+    got =3D D3DXVec2LengthSq(NULL);
     ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", =
expected, got);
=20
 }
diff --git a/include/d3dx8math.h b/include/d3dx8math.h
index 2a98e00..db75b72 100644
--- a/include/d3dx8math.h
+++ b/include/d3dx8math.h
@@ -58,6 +58,7 @@ typedef struct D3DXCOLOR
     FLOAT r, g, b, a;
 } D3DXCOLOR, *LPD3DXCOLOR;
=20
+FLOAT D3DXVec2Dot(CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
 FLOAT D3DXVec2Length(CONST D3DXVECTOR2 *pv);
 FLOAT D3DXVec2LengthSq(CONST D3DXVECTOR2 *pv);
=20
diff --git a/include/d3dx8math.inl b/include/d3dx8math.inl
index e5ced8d..5c29484 100644
--- a/include/d3dx8math.inl
+++ b/include/d3dx8math.inl
@@ -19,6 +19,12 @@
 #ifndef __D3DX8MATH_INL__
 #define __D3DX8MATH_INL__
=20
+extern inline FLOAT D3DXVec2Dot(CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *=
pv2)
+{
+    if ( !pv1 || !pv2) return 0.0f;
+    return ( (pv1->x * pv2->x + pv1->y * pv2->y) );
+}
+
 extern inline FLOAT D3DXVec2Length(CONST D3DXVECTOR2 *pv)
 {
     if (!pv) return 0.0f;
--=20
1.5.3.2


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