From 0c49ed5afc2ae9e4bc4aa1af9c655bbe1f3d14b8 Mon Sep 17 00:00:00 2001 From: Sebastiano Tronto Date: Sun, 22 Oct 2023 14:48:42 +0200 Subject: Small change of plans, moved stuff around --- src/cube_array.c | 931 ------------------------------------------------------- 1 file changed, 931 deletions(-) delete mode 100644 src/cube_array.c (limited to 'src/cube_array.c') diff --git a/src/cube_array.c b/src/cube_array.c deleted file mode 100644 index cbf59e4..0000000 --- a/src/cube_array.c +++ /dev/null @@ -1,931 +0,0 @@ -/* -In this implementation of the cube.h interface, the cube is represented -by two arrays of 8-bit unsigned integers, one for centers and one for -corners. The 4 leas-significant digits of each bit determine the piece, -the other 4 are used for orientation or kept to 0. - -Edges: - xxxopppp (x = unused, o = orientation, p = piece) - -Corners: - xooxpppp (x = unused, o = orientation, p = piece) - -The two bits for CO are shifted to make it possible to perform mod 3 -operations (sum, inverse) using only addition and bitwise operators. -See below for details. - -The third bit is needed because x+y+1 can exceed 4. -*/ - -#include -#include -#include - -#ifdef DEBUG -#include -#endif - -#include "constants.h" -#include "cube.h" - -#define _c_ufr 0U -#define _c_ubl 1U -#define _c_dfl 2U -#define _c_dbr 3U -#define _c_ufl 4U -#define _c_ubr 5U -#define _c_dfr 6U -#define _c_dbl 7U - -#define _e_uf 0U -#define _e_ub 1U -#define _e_db 2U -#define _e_df 3U -#define _e_ur 4U -#define _e_ul 5U -#define _e_dl 6U -#define _e_dr 7U -#define _e_fr 8U -#define _e_fl 9U -#define _e_bl 10U -#define _e_br 11U - -#define _eoshift 4U -#define _coshift 5U - -#define _pbits 0xFU -#define _eobit 0x10U -#define _cobits 0xF0U -#define _cobits2 0x60U -#define _ctwist_cw 0x20U -#define _ctwist_ccw 0x40U -#define _eflip 0x10U -#define _error 0xFFU - -static char *cornerstr[] = { - [_c_ufr] = "UFR", - [_c_ubl] = "UBL", - [_c_dfl] = "DFL", - [_c_dbr] = "DBR", - [_c_ufl] = "UFL", - [_c_ubr] = "UBR", - [_c_dfr] = "DFR", - [_c_dbl] = "DBL" -}; - -static char *cornerstralt[] = { - [_c_ufr] = "URF", - [_c_ubl] = "ULB", - [_c_dfl] = "DLF", - [_c_dbr] = "DRB", - [_c_ufl] = "ULF", - [_c_ubr] = "URB", - [_c_dfr] = "DRF", - [_c_dbl] = "DLB" -}; - -static char *edgestr[] = { - [_e_uf] = "UF", - [_e_ub] = "UB", - [_e_db] = "DB", - [_e_df] = "DF", - [_e_ur] = "UR", - [_e_ul] = "UL", - [_e_dl] = "DL", - [_e_dr] = "DR", - [_e_fr] = "FR", - [_e_fl] = "FL", - [_e_bl] = "BL", - [_e_br] = "BR" -}; - -static char *movestr[] = { - [U] = "U", - [U2] = "U2", - [U3] = "U'", - [D] = "D", - [D2] = "D2", - [D3] = "D'", - [R] = "R", - [R2] = "R2", - [R3] = "R'", - [L] = "L", - [L2] = "L2", - [L3] = "L'", - [F] = "F", - [F2] = "F2", - [F3] = "F'", - [B] = "B", - [B2] = "B2", - [B3] = "B'", -}; - -static char *transstr[] = { - [UFr] = "rotation UF", - [UFm] = "mirrored UF", - [ULr] = "rotation UL", - [ULm] = "mirrored UL", - [UBr] = "rotation UB", - [UBm] = "mirrored UB", - [URr] = "rotation UR", - [URm] = "mirrored UR", - [DFr] = "rotation DF", - [DFm] = "mirrored DF", - [DLr] = "rotation DL", - [DLm] = "mirrored DL", - [DBr] = "rotation DB", - [DBm] = "mirrored DB", - [DRr] = "rotation DR", - [DRm] = "mirrored DR", - [RUr] = "rotation RU", - [RUm] = "mirrored RU", - [RFr] = "rotation RF", - [RFm] = "mirrored RF", - [RDr] = "rotation RD", - [RDm] = "mirrored RD", - [RBr] = "rotation RB", - [RBm] = "mirrored RB", - [LUr] = "rotation LU", - [LUm] = "mirrored LU", - [LFr] = "rotation LF", - [LFm] = "mirrored LF", - [LDr] = "rotation LD", - [LDm] = "mirrored LD", - [LBr] = "rotation LB", - [LBm] = "mirrored LB", - [FUr] = "rotation FU", - [FUm] = "mirrored FU", - [FRr] = "rotation FR", - [FRm] = "mirrored FR", - [FDr] = "rotation FD", - [FDm] = "mirrored FD", - [FLr] = "rotation FL", - [FLm] = "mirrored FL", - [BUr] = "rotation BU", - [BUm] = "mirrored BU", - [BRr] = "rotation BR", - [BRm] = "mirrored BR", - [BDr] = "rotation BD", - [BDm] = "mirrored BD", - [BLr] = "rotation BL", - [BLm] = "mirrored BL", -}; - -cube_t solvedcube = { - .c = { - [_c_ufr] = _c_ufr, - [_c_ubl] = _c_ubl, - [_c_dfl] = _c_dfl, - [_c_dbr] = _c_dbr, - [_c_ufl] = _c_ufl, - [_c_ubr] = _c_ubr, - [_c_dfr] = _c_dfr, - [_c_dbl] = _c_dbl - }, - .e = { - [_e_uf] = _e_uf, - [_e_ub] = _e_ub, - [_e_db] = _e_db, - [_e_df] = _e_df, - [_e_ur] = _e_ur, - [_e_ul] = _e_ul, - [_e_dl] = _e_dl, - [_e_dr] = _e_dr, - [_e_fr] = _e_fr, - [_e_fl] = _e_fl, - [_e_bl] = _e_bl, - [_e_br] = _e_br - } -}; - -static cube_t errorcube = { .e = {0}, .c = {0} }; - -static bool isconsistent(cube_t); -static uint8_t readco(char *); -static uint8_t readcp(char *); -static uint8_t readeo(char *); -static uint8_t readep(char *); -static uint8_t readmove(char); -static uint8_t readmodifier(char); -static cube_t readcube_H48(char *); -static void writecube_H48(cube_t, char *); -static int writepiece_SRC(uint8_t, char *); -static void writecube_SRC(cube_t, char *); -static int permsign(uint8_t *, int); - -static uint8_t -readco(char *str) -{ - if (*str == '0') - return 0; - if (*str == '1') - return _ctwist_cw; - if (*str == '2') - return _ctwist_ccw; - -#ifdef DEBUG - fprintf(stderr, "Error reading CO\n"); -#endif - return _error; -} - -static uint8_t -readcp(char *str) -{ - uint8_t c; - - for (c = 0; c < 8; c++) - if (!strncmp(str, cornerstr[c], 3) || - !strncmp(str, cornerstralt[c], 3)) - return c; - -#ifdef DEBUG - fprintf(stderr, "Error reading CP\n"); -#endif - return _error; -} - -static uint8_t -readeo(char *str) -{ - if (*str == '0') - return 0; - if (*str == '1') - return _eflip; - -#ifdef DEBUG - fprintf(stderr, "Error reading EO\n"); -#endif - return _error; -} - -static uint8_t -readep(char *str) -{ - uint8_t e; - - for (e = 0; e < 12; e++) - if (!strncmp(str, edgestr[e], 2)) - return e; - -#ifdef DEBUG - fprintf(stderr, "Error reading EP\n"); -#endif - return _error; -} - -static cube_t -readcube_H48(char *buf) -{ - int i; - uint8_t piece, orient; - cube_t ret = {0}; - char *b = buf; - - for (i = 0; i < 12; i++) { - while (*b == ' ' || *b == '\t' || *b == '\n') - b++; - if ((piece = readep(b)) == _error) - return errorcube; - b += 2; - if ((orient = readeo(b)) == _error) - return errorcube; - b++; - ret.e[i] = piece | orient; - } - for (i = 0; i < 8; i++) { - while (*b == ' ' || *b == '\t' || *b == '\n') - b++; - if ((piece = readcp(b)) == _error) - return errorcube; - b += 3; - if ((orient = readco(b)) == _error) - return errorcube; - b++; - ret.c[i] = piece | orient; - } - - return ret; -} - -cube_t -readcube(format_t format, char *buf) -{ - cube_t ret; - - switch (format) { - case H48: - ret = readcube_H48(buf); - break; - default: - #ifdef DEBUG - fprintf(stderr, "Cannot read cube in the given format\n"); - #endif - ret = errorcube; - } - -#ifdef DEBUG - if (iserror(ret)) - fprintf(stderr, "readcube error\n"); -#endif - return ret; -} - -static void -writecube_H48(cube_t cube, char *buf) -{ - uint8_t piece, orient; - int i; - - for (i = 0; i < 12; i++) { - piece = cube.e[i] & _pbits; - orient = (cube.e[i] & _eobit) >> _eoshift; - buf[4*i ] = edgestr[piece][0]; - buf[4*i + 1] = edgestr[piece][1]; - buf[4*i + 2] = orient + '0'; - buf[4*i + 3] = ' '; - } - for (i = 0; i < 8; i++) { - piece = cube.c[i] & _pbits; - orient = (cube.c[i] & _cobits) >> _coshift; - buf[48 + 5*i ] = cornerstr[piece][0]; - buf[48 + 5*i + 1] = cornerstr[piece][1]; - buf[48 + 5*i + 2] = cornerstr[piece][2]; - buf[48 + 5*i + 3] = orient + '0'; - buf[48 + 5*i + 4] = ' '; - } - - buf[48+39] = '\0'; -} - -static int -writepiece_SRC(uint8_t piece, char *buf) -{ - char digits[3]; - int i, len = 0; - - while (piece != 0) { - digits[len++] = (piece % 10) + '0'; - piece /= 10; - } - - if (len == 0) - digits[len++] = '0'; - - for (i = 0; i < len; i++) - buf[i] = digits[len-i-1]; - - buf[len] = ','; - buf[len+1] = ' '; - - return len+2; -} - -static void -writecube_SRC(cube_t cube, char *buf) -{ - int i, ptr; - - memcpy(buf, "{\n\t.c = {", 9); - ptr = 9; - - for (i = 0; i < 8; i++) - ptr += writepiece_SRC(cube.c[i], buf + ptr); - - memcpy(buf+ptr-2, "},\n\t.e = {", 10); - ptr += 8; - - for (i = 0; i < 12; i++) - ptr += writepiece_SRC(cube.e[i], buf + ptr); - - memcpy(buf+ptr-2, "}\n}\0", 4); -} - -void -writecube(format_t format, cube_t cube, char *buf) -{ - char *errormsg; - size_t len; - - if (!isconsistent(cube)) { - errormsg = "ERROR: cannot write inconsistent cube"; - goto writecube_error; - } - - switch (format) { - case H48: - writecube_H48(cube, buf); - break; - case SRC: - writecube_SRC(cube, buf); - break; - default: - errormsg = "ERROR: cannot write cube in the given format"; - goto writecube_error; - } - - return; - -writecube_error: -#ifdef DEBUG - fprintf(stderr, "writecube error, see stdout for details\n"); -#endif - len = strlen(errormsg); - memcpy(buf, errormsg, len); - buf[len] = '\n'; - buf[len+1] = '\0'; -} - -static uint8_t -readmove(char c) -{ - switch (c) { - case 'U': - return U; - case 'D': - return D; - case 'R': - return R; - case 'L': - return L; - case 'F': - return F; - case 'B': - return B; - default: - return _error; - } -} - -static uint8_t -readmodifier(char c) -{ - switch (c) { - case '1': /* Fallthrough */ - case '2': /* Fallthrough */ - case '3': - return c - '0' - 1; - case '\'': - return 2; - default: - return 0; - } -} - -int -readmoves(char *buf, move_t *m) -{ - int n; - uint64_t r; - char *b; - - for (b = buf, n = 0; *b != '\0'; b++) { - while (*b == ' ' || *b == '\t' || *b == '\n') - b++; - if (*b == '\0') - return n; - if ((r = readmove(*b)) == _error) - goto readmoves_error; - m[n] = (move_t)r; - if ((r = readmodifier(*(b+1))) != 0) { - b++; - m[n] += r; - } - n++; - } - - return n; - -readmoves_error: -#ifdef DEBUG - fprintf(stderr, "readmoves error\n"); -#endif - return -1; -} - -trans_t -readtrans(char *buf) -{ - uint8_t t; - - for (t = 0; t < 48; t++) - if (!strncmp(buf, transstr[t], 11)) - return t; - -#ifdef DEBUG - fprintf(stderr, "readtrans error\n"); -#endif - return errortrans; -} - -void -writemoves(move_t *m, int n, char *buf) -{ - int i; - size_t len; - char *b, *s; - - for (i = 0, b = buf; i < n; i++, b++) { - s = movestr[m[i]]; - len = strlen(s); - memcpy(b, s, len); - b += len; - *b = ' '; - } - *b = '\0'; -} - -void -writetrans(trans_t t, char *buf) -{ - if (t >= 48) - memcpy(buf, "error trans", 11); - else - memcpy(buf, transstr[t], 11); - buf[11] = '\0'; -} - -static int -permsign(uint8_t *a, int n) -{ - int i, j; - uint8_t ret = 0; - - for (i = 0; i < n; i++) - for (j = i+1; j < n; j++) - ret += (a[i] & _pbits) > (a[j] & _pbits) ? 1 : 0; - - return ret % 2; -} - -static bool -isconsistent(cube_t c) -{ - uint8_t i, p, e; - bool found[12]; - - for (i = 0; i < 12; i++) - found[i] = false; - for (i = 0; i < 12; i++) { - p = c.e[i] & _pbits; - e = c.e[i] & ~_pbits; - if (p >= 12) - goto inconsistent_ep; - if (e != 0 && e != _eobit) - goto inconsistent_eo; - found[p] = true; - } - for (i = 0; i < 12; i++) - if (!found[i]) - goto inconsistent_ep; - - for (i = 0; i < 8; i++) - found[i] = false; - for (i = 0; i < 8; i++) { - p = c.c[i] & _pbits; - e = c.c[i] & ~_pbits; - if (p >= 8) - goto inconsistent_cp; - if (e != 0 && e != _ctwist_cw && e != _ctwist_ccw) - goto inconsistent_co; - found[p] = true; - } - for (i = 0; i < 8; i++) - if (!found[i]) - goto inconsistent_co; - - return true; - -inconsistent_ep: -#ifdef DEBUG - fprintf(stderr, "Inconsistent EP\n"); -#endif - return false; -inconsistent_cp: -#ifdef DEBUG - fprintf(stderr, "Inconsistent CP\n"); -#endif - return false; -inconsistent_eo: -#ifdef DEBUG - fprintf(stderr, "Inconsistent EO\n"); -#endif - return false; -inconsistent_co: -#ifdef DEBUG - fprintf(stderr, "Inconsistent CO\n"); -#endif - return false; -} - -bool -issolvable(cube_t cube) -{ - int8_t i, eo, co; - -#ifdef DEBUG - if (!isconsistent(cube)) - goto issolvable_inconsistent; -#endif - - if (permsign(cube.e, 12) != permsign(cube.c, 8)) - goto issolvable_parity; - - eo = 0; - for (i = 0; i < 12; i++) - eo += (cube.e[i] & _eobit) >> _eoshift; - if (eo % 2 != 0) - goto issolvable_eo; - - co = 0; - for (i = 0; i < 8; i++) - co += (cube.c[i] & _cobits) >> _coshift; - if (co % 3 != 0) - goto issolvable_co; - - return true; - -issolvable_inconsistent: -#ifdef DEBUG - fprintf(stderr, "issolvable: cube is inconsistent\n"); -#endif - return false; -issolvable_parity: -#ifdef DEBUG - fprintf(stderr, "EP and CP parities are different\n"); -#endif - return false; -issolvable_eo: -#ifdef DEBUG - fprintf(stderr, "Odd number of flipped edges\n"); -#endif - return false; -issolvable_co: -#ifdef DEBUG - fprintf(stderr, "Sum of corner orientation is not multiple of 3\n"); -#endif - return false; -} - -bool -equal(cube_t cube1, cube_t cube2) -{ - uint8_t i; - - for (i = 0; i < 12; i++) - if (cube1.e[i] != cube2.e[i]) - return false; - - for (i = 0; i < 8; i++) - if (cube1.c[i] != cube2.c[i]) - return false; - - return true; -} - -bool -issolved(cube_t cube) -{ - return equal(cube, solvedcube); -} - -bool -iserror(cube_t cube) -{ - return equal(cube, errorcube); -} - -cube_t -move(cube_t c, move_t m) -{ - cube_t ret; - uint8_t aux, auy, auz; - -#ifdef DEBUG - if (!isconsistent(c)) - goto move_inconsistent; -#endif - -#define PERM4(r, i, j, k, l) \ - aux = r[i]; \ - r[i] = r[l]; \ - r[l] = r[k]; \ - r[k] = r[j]; \ - r[j] = aux; -#define PERM22(r, i, j, k, l) \ - aux = r[i]; \ - r[i] = r[j]; \ - r[j] = aux; \ - aux = r[k]; \ - r[k] = r[l]; \ - r[l] = aux; -#define CO(a, b) \ - aux = (a & _cobits) + (b & _cobits); \ - auy = (aux + _ctwist_cw) >> 2U; \ - auz = (aux + auy) & _cobits2; \ - a = (a & _pbits) | auz; -#define CO4(r, i, j, k, l) \ - CO(r[i], _ctwist_cw) \ - CO(r[j], _ctwist_cw) \ - CO(r[k], _ctwist_ccw) \ - CO(r[l], _ctwist_ccw) -#define EO4(r, i, j, k, l) \ - r[i] ^= _eobit; \ - r[j] ^= _eobit; \ - r[k] ^= _eobit; \ - r[l] ^= _eobit; - - ret = c; - - switch (m) { - case U: - PERM4(ret.e, _e_uf, _e_ul, _e_ub, _e_ur) - PERM4(ret.c, _c_ufr, _c_ufl, _c_ubl, _c_ubr) - - return ret; - case U2: - PERM22(ret.e, _e_uf, _e_ub, _e_ul, _e_ur) - PERM22(ret.c, _c_ufr, _c_ubl, _c_ufl, _c_ubr) - - return ret; - case U3: - PERM4(ret.e, _e_uf, _e_ur, _e_ub, _e_ul) - PERM4(ret.c, _c_ufr, _c_ubr, _c_ubl, _c_ufl) - - return ret; - case D: - PERM4(ret.e, _e_df, _e_dr, _e_db, _e_dl) - PERM4(ret.c, _c_dfr, _c_dbr, _c_dbl, _c_dfl) - - return ret; - case D2: - PERM22(ret.e, _e_df, _e_db, _e_dr, _e_dl) - PERM22(ret.c, _c_dfr, _c_dbl, _c_dbr, _c_dfl) - - return ret; - case D3: - PERM4(ret.e, _e_df, _e_dl, _e_db, _e_dr) - PERM4(ret.c, _c_dfr, _c_dfl, _c_dbl, _c_dbr) - - return ret; - case R: - PERM4(ret.e, _e_ur, _e_br, _e_dr, _e_fr) - PERM4(ret.c, _c_ufr, _c_ubr, _c_dbr, _c_dfr) - - CO4(ret.c, _c_ubr, _c_dfr, _c_ufr, _c_dbr) - - return ret; - case R2: - PERM22(ret.e, _e_ur, _e_dr, _e_fr, _e_br) - PERM22(ret.c, _c_ufr, _c_dbr, _c_ubr, _c_dfr) - - return ret; - case R3: - PERM4(ret.e, _e_ur, _e_fr, _e_dr, _e_br) - PERM4(ret.c, _c_ufr, _c_dfr, _c_dbr, _c_ubr) - - CO4(ret.c, _c_ubr, _c_dfr, _c_ufr, _c_dbr) - - return ret; - case L: - PERM4(ret.e, _e_ul, _e_fl, _e_dl, _e_bl) - PERM4(ret.c, _c_ufl, _c_dfl, _c_dbl, _c_ubl) - - CO4(ret.c, _c_ufl, _c_dbl, _c_dfl, _c_ubl) - - return ret; - case L2: - PERM22(ret.e, _e_ul, _e_dl, _e_fl, _e_bl) - PERM22(ret.c, _c_ufl, _c_dbl, _c_ubl, _c_dfl) - - return ret; - case L3: - PERM4(ret.e, _e_ul, _e_bl, _e_dl, _e_fl) - PERM4(ret.c, _c_ufl, _c_ubl, _c_dbl, _c_dfl) - - CO4(ret.c, _c_ufl, _c_dbl, _c_dfl, _c_ubl) - - return ret; - case F: - PERM4(ret.e, _e_uf, _e_fr, _e_df, _e_fl) - PERM4(ret.c, _c_ufr, _c_dfr, _c_dfl, _c_ufl) - - EO4(ret.e, _e_uf, _e_fr, _e_df, _e_fl) - CO4(ret.c, _c_ufr, _c_dfl, _c_dfr, _c_ufl) - - return ret; - case F2: - PERM22(ret.e, _e_uf, _e_df, _e_fr, _e_fl) - PERM22(ret.c, _c_ufr, _c_dfl, _c_ufl, _c_dfr) - - return ret; - case F3: - PERM4(ret.e, _e_uf, _e_fl, _e_df, _e_fr) - PERM4(ret.c, _c_ufr, _c_ufl, _c_dfl, _c_dfr) - - EO4(ret.e, _e_uf, _e_fr, _e_df, _e_fl) - CO4(ret.c, _c_ufr, _c_dfl, _c_dfr, _c_ufl) - - return ret; - case B: - PERM4(ret.e, _e_ub, _e_bl, _e_db, _e_br) - PERM4(ret.c, _c_ubr, _c_ubl, _c_dbl, _c_dbr) - - EO4(ret.e, _e_ub, _e_br, _e_db, _e_bl) - CO4(ret.c, _c_ubl, _c_dbr, _c_dbl, _c_ubr) - - return ret; - case B2: - PERM22(ret.e, _e_ub, _e_db, _e_br, _e_bl) - PERM22(ret.c, _c_ubr, _c_dbl, _c_ubl, _c_dbr) - - return ret; - case B3: - PERM4(ret.e, _e_ub, _e_br, _e_db, _e_bl) - PERM4(ret.c, _c_ubr, _c_dbr, _c_dbl, _c_ubl) - - EO4(ret.e, _e_ub, _e_br, _e_db, _e_bl) - CO4(ret.c, _c_ubl, _c_dbr, _c_dbl, _c_ubr) - - return ret; - default: - goto move_unknown; - } - -move_inconsistent: - fprintf(stderr, "move error, inconsistent cube\n"); - goto move_error; -move_unknown: - fprintf(stderr, "mover error, unknown move\n"); - goto move_error; -move_error: - return errorcube; -} - -cube_t -inverse(cube_t c) -{ - uint8_t i, piece, orien; - cube_t ret = {0}; - -#ifdef DEBUG - if (!isconsistent(c)) - goto inverse_inconsistent; -#endif - - for (i = 0; i < 12; i++) { - piece = c.e[i & _pbits]; - orien = piece & _eobit; - ret.e[piece & _pbits] = i | orien; - } - - for (i = 0; i < 8; i++) { - piece = c.c[i & _pbits]; - orien = ((piece << 1) | (piece >> 1)) & _cobits2; - ret.c[piece & _pbits] = i | orien; - } - - return ret; - -inverse_inconsistent: - fprintf(stderr, "inverse error, inconsistent cube\n"); - return errorcube; -} - -cube_t -compose(cube_t c1, cube_t c2) -{ - uint8_t i, piece, orien, aux, auy; - cube_t ret = {0}; - -#ifdef DEBUG - if (!isconsistent(c1) || !isconsistent(c2)) - goto compose_inconsistent; -#endif - - for (i = 0; i < 12; i++) { - piece = c2.e[i] & _pbits; - orien = (c2.e[i] ^ c1.e[piece]) & _eobit; - ret.e[i] = (c1.e[piece] & _pbits) | orien; - } - - for (i = 0; i < 8; i++) { - piece = c2.c[i] & _pbits; - aux = (c2.c[i] & _cobits) + (c1.c[piece] & _cobits); - auy = (aux + _ctwist_cw) >> 2U; - orien = (aux + auy) & _cobits2; - ret.c[i] = (c1.c[piece] & _pbits) | orien; - } - - return ret; - -compose_inconsistent: - fprintf(stderr, "compose error, inconsistent cube\n"); - return errorcube; -} - -cube_t -transform(cube_t c, trans_t t) -{ - return errorcube; -} -- cgit v1.3