David Adam : d3dx8: Implement D3DXVec2Minimize with a test.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 28276e8fb180d55dc6d941010bc2549a61031d6a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=28276e8fb180d55dc6d941010b...

Author: David Adam <David.Adam(a)math.cnrs.fr>
Date:   Sun Oct 14 19:28:03 2007 +0200

d3dx8: Implement D3DXVec2Minimize with a test.

---

 dlls/d3dx8/tests/math.c |   11 +++++++++++
 include/d3dx8math.h     |    1 +
 include/d3dx8math.inl   |    8 ++++++++
 3 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/dlls/d3dx8/tests/math.c b/dlls/d3dx8/tests/math.c
index 85a1cb7..37d8cdb 100644
--- a/dlls/d3dx8/tests/math.c
+++ b/dlls/d3dx8/tests/math.c
@@ -87,6 +87,17 @@ static void D3X8Vector2Test(void)
     got = D3DXVec2LengthSq(NULL);
     ok(fabs( got - expected ) < admitted_error, "Expected: %f, Got: %f\n", expected, got);
 
+/*_______________D3DXVec2Minimize__________________________*/
+   expectedvec.x = -7.0f; expectedvec.y = 4.0f;
+   /*vecgot.x=0.0f; vecgot.y=0.0f;*/
+   D3DXVec2Minimize(&gotvec,&u,&v);
+   expect_vec(expectedvec,gotvec);
+   /* Tests the case NULL */
+    funcpointer = D3DXVec2Minimize(&gotvec,NULL,&v);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+    funcpointer = D3DXVec2Minimize(NULL,NULL,NULL);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+
 /*_______________D3DXVec2Subtract__________________________*/
    expectedvec.x = 10.0f; expectedvec.y = -5.0f;
    D3DXVec2Subtract(&gotvec,&u,&v);
diff --git a/include/d3dx8math.h b/include/d3dx8math.h
index e1c25a1..d71c015 100644
--- a/include/d3dx8math.h
+++ b/include/d3dx8math.h
@@ -63,6 +63,7 @@ FLOAT D3DXVec2CCW(CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
 FLOAT D3DXVec2Dot(CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
 FLOAT D3DXVec2Length(CONST D3DXVECTOR2 *pv);
 FLOAT D3DXVec2LengthSq(CONST D3DXVECTOR2 *pv);
+D3DXVECTOR2* D3DXVec2Minimize(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
 D3DXVECTOR2* D3DXVec2Subtract(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2);
 
 #endif /* __D3DX8MATH_H__ */
diff --git a/include/d3dx8math.inl b/include/d3dx8math.inl
index bafee45..0c39d91 100644
--- a/include/d3dx8math.inl
+++ b/include/d3dx8math.inl
@@ -51,6 +51,14 @@ extern inline FLOAT D3DXVec2LengthSq(CONST D3DXVECTOR2 *pv)
     return( (pv->x) * (pv->x) + (pv->y) * (pv->y) );
 }
 
+extern inline D3DXVECTOR2* D3DXVec2Minimize(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2)
+{
+    if ( !pout || !pv1 || !pv2) return NULL;
+    pout->x = min(pv1->x , pv2->x);
+    pout->y = min(pv1->y , pv2->y);
+    return pout;
+}
+
 extern inline D3DXVECTOR2* D3DXVec2Subtract(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv1, CONST D3DXVECTOR2 *pv2)
 {
     if ( !pout || !pv1 || !pv2) return NULL;