-static inline float cgm_msubdet(float *m, int row, int col);
-static inline float cgm_mcofactor(float *m, int row, int col);
-static inline float cgm_mdet(float *m);
+static inline float cgm_msubdet(const float *m, int row, int col);
+static inline float cgm_mcofactor(const float *m, int row, int col);
+static inline float cgm_mdet(const float *m);