diff --git a/include/d3dx9math.h b/include/d3dx9math.h
index f28ffd1534f..79a7e669825 100644
--- a/include/d3dx9math.h
+++ b/include/d3dx9math.h
@@ -261,6 +261,21 @@ typedef struct D3DXCOLOR
     FLOAT r, g, b, a;
 } D3DXCOLOR, *LPD3DXCOLOR;
 
+typedef struct D3DXFLOAT16
+{
+#ifdef __cplusplus
+    D3DXFLOAT16();
+    D3DXFLOAT16(FLOAT f);
+    D3DXFLOAT16(CONST D3DXFLOAT16 &f);
+
+    operator FLOAT ();
+
+    BOOL operator == (CONST D3DXFLOAT16 &) const;
+    BOOL operator != (CONST D3DXFLOAT16 &) const;
+#endif /* __cplusplus */
+    WORD value;
+} D3DXFLOAT16, *LPD3DXFLOAT16;
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -357,6 +372,9 @@ D3DXVECTOR4* WINAPI D3DXVec4Normalize(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv);
 D3DXVECTOR4* WINAPI D3DXVec4Transform(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv, CONST D3DXMATRIX *pm);
 D3DXVECTOR4* WINAPI D3DXVec4TransformArray(D3DXVECTOR4 *pout, UINT outstride, CONST D3DXVECTOR4 *pv, UINT vstride, CONST D3DXMATRIX *pm, UINT n);
 
+D3DXFLOAT16 *WINAPI D3DXFloat32To16Array(D3DXFLOAT16 *pout, CONST FLOAT *pin, UINT n);
+FLOAT *WINAPI D3DXFloat16To32Array(FLOAT *pout, CONST D3DXFLOAT16 *pin, UINT n);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/d3dx9math.inl b/include/d3dx9math.inl
index 3cd078aca71..3f55aef4a51 100644
--- a/include/d3dx9math.inl
+++ b/include/d3dx9math.inl
@@ -851,6 +851,37 @@ inline BOOL D3DXCOLOR::operator != (CONST D3DXCOLOR& col) const
     return r != col.r || g != col.g || b != col.b || a != col.a;
 }
 
+inline D3DXFLOAT16::D3DXFLOAT16()
+{
+}
+
+inline D3DXFLOAT16::D3DXFLOAT16(FLOAT f)
+{
+    D3DXFloat32To16Array(this, &f, 1);
+}
+
+inline D3DXFLOAT16::D3DXFLOAT16(CONST D3DXFLOAT16 &f)
+{
+    value = f.value;
+}
+
+inline D3DXFLOAT16::operator FLOAT ()
+{
+    FLOAT f;
+    D3DXFloat16To32Array(&f, this, 1);
+    return f;
+}
+
+inline BOOL D3DXFLOAT16::operator == (CONST D3DXFLOAT16 &f) const
+{
+    return value == f.value;
+}
+
+inline BOOL D3DXFLOAT16::operator != (CONST D3DXFLOAT16 &f) const
+{
+    return value != f.value;
+}
+
 #endif /* __cplusplus */
 
 /*_______________D3DXCOLOR_____________________*/