2 files changed, 24 insertions, 2 deletions

diff --git a/src/cube.h b/src/cube.h
index 836bb5d..e5434e3 100644
--- a/src/cube.h
+++ b/src/cube.h
@@ -1,9 +1,18 @@
 typedef enum {
-        U, U2, U3, D, D2, D3,
+        U = 0, U2, U3, D, D2, D3,
         R, R2, R3, L, L2, L3,
         F, F2, F3, B, B2, B3
 } move_t;
 
+typedef enum {
+        UF_i = 0, UL_i, UB_i, UR_i, DF_i, DL_i, DB_i, DR_i,
+        UF_m, UL_m, UB_m, UR_m, DF_m, DL_m, DB_m, DR_m,
+        RU_i, RF_i, RD_i, RB_i, LU_i, LF_i, LD_i, LB_i,
+        RU_m, RF_m, RD_m, RB_m, LU_m, LF_m, LD_m, LB_m,
+        FU_i, FR_i, FD_i, FL_i, BU_i, BR_i, BD_i, BL_i,
+        FU_m, FR_m, FD_m, FL_m, BU_m, BR_m, BD_m, BL_m
+} trans_t;
+
 typedef struct {
         uint8_t c[8];
         uint8_t e[12];
@@ -51,3 +60,5 @@ void writemoves(move_t *, int, char *);
 
 cube_t move(cube_t, move_t);
 cube_t inverse(cube_t);
+cube_t compose(cube_t, cube_t);
+cube_t transform(cube_t, trans_t);
diff --git a/src/cube_array.c b/src/cube_array.c
index 3445658..a051610 100644
--- a/src/cube_array.c
+++ b/src/cube_array.c
@@ -155,7 +155,6 @@ static uint8_t readep(char *);
 static uint8_t readmove(char);
 static uint8_t readmodifier(char);
 static int permsign(uint8_t *, int);
-static cube_t compose(cube_t, cube_t);
 
 static uint8_t
 readco(char *str)
@@ -710,3 +709,15 @@ inverse_inconsistent:
         fprintf(stderr, "inverse error, inconsistent cube\n");
         return errorcube;
 }
+
+cube_t
+compose(cube_t c1, cube_t c2)
+{
+        return errorcube;
+}
+
+cube_t
+transform(cube_t c, trans_t t)
+{
+        return errorcube;
+}