1 files changed, 23 insertions, 0 deletions
diff --git a/include/mat44.h b/include/mat44.h
new file mode 100644
index 0000000000..ae8055d5fb
--- /dev/null
+++ b/include/mat44.h
@@ -0,0 +1,23 @@
+/* Copyright 2015 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* Header file for common math functions. */
+#ifndef __CROS_EC_MAT_44_H
+
+#define __CROS_EC_MAT_44_H
+
+#include "vec4.h"
+#include "util.h"
+
+typedef float mat44_t[4][4];
+typedef size_t size4_t[4];
+
+void mat44_decompose_lup(mat44_t LU, size4_t pivot);
+
+void mat44_swap_rows(mat44_t A, const size_t i, const size_t j);
+
+void mat44_solve(mat44_t A, vec4_t x, const vec4_t b, const size4_t pivot);
+
+#endif  /* __CROS_EC_MAT_44_H */