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diff --git a/source/gles2n64/src/3DMath.h b/source/gles2n64/src/3DMath.h
new file mode 100644
index 0000000..d639a97
--- /dev/null
+++ b/source/gles2n64/src/3DMath.h
@@ -0,0 +1,45 @@
+#ifndef _3DMATH_H
+#define _3DMATH_H
+
+#include <string.h>
+
+extern void (*MultMatrix)(float m0[4][4], float m1[4][4], float dest[4][4]);
+extern void (*TransformVectorNormalize)(float vec[3], float mtx[4][4]);
+extern void (*Normalize)(float v[3]);
+extern float (*DotProduct)(float v0[3], float v1[3]);
+
+inline void CopyMatrix( float m0[4][4], float m1[4][4] )
+{
+    memcpy( m0, m1, 16 * sizeof( float ) );
+}
+
+inline void MultMatrix2( float m0[4][4], float m1[4][4] )
+{
+    float dst[4][4];
+    MultMatrix(m0, m1, dst);
+    memcpy( m0, dst, sizeof(float) * 16 );
+}
+
+inline void Transpose3x3Matrix( float mtx[4][4] )
+{
+    float tmp;
+
+    tmp = mtx[0][1];
+    mtx[0][1] = mtx[1][0];
+    mtx[1][0] = tmp;
+
+    tmp = mtx[0][2];
+    mtx[0][2] = mtx[2][0];
+    mtx[2][0] = tmp;
+
+    tmp = mtx[1][2];
+    mtx[1][2] = mtx[2][1];
+    mtx[2][1] = tmp;
+}
+
+#ifdef __NEON_OPT
+void MathInitNeon();
+#endif
+
+#endif
+