From 1964938ca6abef6e5c81d9dccdf42c55abacb5e9 Mon Sep 17 00:00:00 2001 From: Sebastiano Tronto Date: Sun, 5 Nov 2023 16:29:14 +0100 Subject: Refactoring --- cube.c | 3698 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 3698 insertions(+) create mode 100644 cube.c (limited to 'cube.c') diff --git a/cube.c b/cube.c new file mode 100644 index 0000000..e98bc40 --- /dev/null +++ b/cube.c @@ -0,0 +1,3698 @@ +#include +#include +#include + +#ifdef DEBUG +#include +#endif + +#include "cube.h" + +/****************************************************************************** +Section: constants and strings +******************************************************************************/ + +#define U 0U +#define U2 1U +#define U3 2U +#define D 3U +#define D2 4U +#define D3 5U +#define R 6U +#define R2 7U +#define R3 8U +#define L 9U +#define L2 10U +#define L3 11U +#define F 12U +#define F2 13U +#define F3 14U +#define B 15U +#define B2 16U +#define B3 17U + +#define UFr 0 +#define ULr 1 +#define UBr 2 +#define URr 3 +#define DFr 4 +#define DLr 5 +#define DBr 6 +#define DRr 7 +#define RUr 8 +#define RFr 9 +#define RDr 10 +#define RBr 11 +#define LUr 12 +#define LFr 13 +#define LDr 14 +#define LBr 15 +#define FUr 16 +#define FRr 17 +#define FDr 18 +#define FLr 19 +#define BUr 20 +#define BRr 21 +#define BDr 22 +#define BLr 23 + +#define UFm 24 +#define ULm 25 +#define UBm 26 +#define URm 27 +#define DFm 28 +#define DLm 29 +#define DBm 30 +#define DRm 31 +#define RUm 32 +#define RFm 33 +#define RDm 34 +#define RBm 35 +#define LUm 36 +#define LFm 37 +#define LDm 38 +#define LBm 39 +#define FUm 40 +#define FRm 41 +#define FDm 42 +#define FLm 43 +#define BUm 44 +#define BRm 45 +#define BDm 46 +#define BLm 47 + +#define errormove 99U +#define errortrans 99U + +#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", +}; + +/****************************************************************************** +Section: cube_array + +This section contains non-optimized functions that operate on the cube in +array format. These utilities are not used in performance-critical parts; +for example, all I/O related stuff is here, as well as some checks on the +state of the cube that are used in debugging. +******************************************************************************/ + +typedef struct { + uint8_t c[16]; + uint8_t e[16]; +} cube_array_t; + +#define get_edge(cube, i) (cube).e[(i)] +#define get_corner(cube, i) (cube).c[(i)] +#define set_edge(cube, i, p) (cube).e[(i)] = (p) +#define set_corner(cube, i, p) (cube).c[(i)] = (p) + +static void setzero_array(cube_array_t *); +static bool equal_array(cube_array_t, cube_array_t); +static bool iserror_array(cube_array_t); +static bool isconsistent_array(cube_array_t); +static bool issolvable_array(cube_array_t); +static uint8_t readco(char *); +static uint8_t readcp(char *); +static uint8_t readeo(char *); +static uint8_t readep(char *); +static cube_array_t readcube_array(format_t, char *); +static int permsign(uint8_t *, int); +static cube_array_t readcube_array_H48(char *); +static void writecube_array_AVX(cube_array_t, char *); +static void writecube_array_H48(cube_array_t, char *); +static int writepiece_SRC(uint8_t, char *); +static void writecube_array_SRC(cube_array_t, char *); +static uint8_t readmove(char); +static uint8_t readmodifier(char); + +cube_array_t solvedcube_array = { + .c = {0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0}, + .e = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0, 0, 0, 0} +}; +cube_array_t zerocube_array = { .e = {0}, .c = {0} }; + +static void +setzero_array(cube_array_t *arr) +{ + memset(arr, 0, 32); +} + +static bool +equal_array(cube_array_t c1, cube_array_t c2) +{ + int i; + bool ret; + + ret = true; + for (i = 0; i < 8; i++) + ret = ret && c1.c[i] == c2.c[i]; + for (i = 0; i < 12; i++) + ret = ret && c1.e[i] == c2.e[i]; + + return ret; +} + +static bool +iserror_array(cube_array_t arr) +{ + return equal_array(arr, zerocube_array); +} + +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_array_t +readcube_array_H48(char *buf) +{ + int i; + uint8_t piece, orient; + cube_array_t ret = {0}; + char *b; + + b = buf; + + for (i = 0; i < 12; i++) { + while (*b == ' ' || *b == '\t' || *b == '\n') + b++; + if ((piece = readep(b)) == _error) + return zerocube_array; + b += 2; + if ((orient = readeo(b)) == _error) + return zerocube_array; + b++; + set_edge(ret, i, piece | orient); + } + for (i = 0; i < 8; i++) { + while (*b == ' ' || *b == '\t' || *b == '\n') + b++; + if ((piece = readcp(b)) == _error) + return zerocube_array; + b += 3; + if ((orient = readco(b)) == _error) + return zerocube_array; + b++; + set_corner(ret, i, piece | orient); + } + + return ret; +} + +cube_array_t +readcube_array(format_t format, char *buf) +{ + cube_array_t arr; + + switch (format) { + case H48: + arr = readcube_array_H48(buf); + break; + default: +#ifdef DEBUG + fprintf(stderr, "Cannot read cube in the given format\n"); +#endif + setzero_array(&arr); + } + +#ifdef DEBUG + if (iserror_array(arr)) + fprintf(stderr, "readcube error\n"); +#endif + return arr; +} + + +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_array_AVX(cube_array_t cube, char *buf) +{ + int i, ptr; + uint8_t piece; + + memcpy(buf, "_mm256_set_epi8(\n\t0, 0, 0, 0, ", 30); + ptr = 30; + + for (i = 11; i >= 0; i--) { + piece = get_edge(cube, i); + ptr += writepiece_SRC(piece, buf + ptr); + } + + memcpy(buf+ptr-2, ",\n\t0, 0, 0, 0, 0, 0, 0, 0, ", 27); + ptr += 25; + + for (i = 7; i >= 0; i--) { + piece = get_corner(cube, i); + ptr += writepiece_SRC(piece, buf + ptr); + } + + memcpy(buf+ptr-2, "\n)\0", 3); +} + +static void +writecube_array_H48(cube_array_t cube, char *buf) +{ + uint8_t piece, perm, orient; + int i; + + for (i = 0; i < 12; i++) { + piece = get_edge(cube, i); + perm = piece & _pbits; + orient = (piece & _eobit) >> _eoshift; + buf[4*i ] = edgestr[perm][0]; + buf[4*i + 1] = edgestr[perm][1]; + buf[4*i + 2] = orient + '0'; + buf[4*i + 3] = ' '; + } + for (i = 0; i < 8; i++) { + piece = get_corner(cube, i); + perm = piece & _pbits; + orient = (piece & _cobits) >> _coshift; + buf[48 + 5*i ] = cornerstr[perm][0]; + buf[48 + 5*i + 1] = cornerstr[perm][1]; + buf[48 + 5*i + 2] = cornerstr[perm][2]; + buf[48 + 5*i + 3] = orient + '0'; + buf[48 + 5*i + 4] = ' '; + } + + buf[48+39] = '\0'; +} + +static void +writecube_array_SRC(cube_array_t cube, char *buf) +{ + int i, ptr; + uint8_t piece; + + memcpy(buf, "{\n\t.c = {", 9); + ptr = 9; + + for (i = 0; i < 8; i++) { + piece = get_corner(cube, i); + ptr += writepiece_SRC(piece, buf + ptr); + } + + memcpy(buf+ptr-2, "},\n\t.e = {", 10); + ptr += 8; + + for (i = 0; i < 12; i++) { + piece = get_edge(cube, i); + ptr += writepiece_SRC(piece, buf + ptr); + } + + memcpy(buf+ptr-2, "}\n}\0", 4); +} + +void +writecube_array(format_t format, cube_array_t a, char *buf) +{ + char *errormsg; + size_t len; + + if (!isconsistent_array(a)) { + errormsg = "ERROR: cannot write inconsistent cube"; + goto writecube_error; + } + + switch (format) { + case AVX: + writecube_array_AVX(a, buf); + break; + case H48: + writecube_array_H48(a, buf); + break; + case SRC: + writecube_array_SRC(a, 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] > a[j] ? 1 : 0; + + return ret % 2; +} + +static bool +isconsistent_array(cube_array_t c) +{ + uint8_t i, p, e, piece; + bool found[12]; + + for (i = 0; i < 12; i++) + found[i] = false; + for (i = 0; i < 12; i++) { + piece = get_edge(c, i); + p = piece & _pbits; + e = piece & _eobit; + 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++) { + piece = get_corner(c, i); + p = piece & _pbits; + e = piece & _cobits; + 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_array(cube_array_t c) +{ + uint8_t i, eo, co, piece, edges[12], corners[8]; + +#ifdef DEBUG + if (!isconsistent_array(c)) { + fprintf(stderr, "issolvable: cube is inconsistent\n"); + return false; + } +#endif + + for (i = 0; i < 12; i++) + edges[i] = get_edge(c, i) & _pbits; + for (i = 0; i < 8; i++) + corners[i] = get_corner(c, i) & _pbits; + + if (permsign(edges, 12) != permsign(corners, 8)) + goto issolvable_parity; + + eo = 0; + for (i = 0; i < 12; i++) { + piece = get_edge(c, i); + eo += (piece & _eobit) >> _eoshift; + } + if (eo % 2 != 0) + goto issolvable_eo; + + co = 0; + for (i = 0; i < 8; i++) { + piece = get_corner(c, i); + co += (piece & _cobits) >> _coshift; + } + if (co % 3 != 0) + goto issolvable_co; + + return true; + +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; +} + +/****************************************************************************** +Section: AVX2 fast methods + +This section contains performance-critical methods that rely on AVX2 +intructions such as routines for moving or transforming the cube. + +Note: the #ifdef below is closed in the next section. +******************************************************************************/ + +#ifdef CUBE_AVX2 + +#define _co_avx2 _mm256_set_epi64x(0, 0, 0, 0xF0F0F0F0F0F0F0F0) +#define _co2_avx2 _mm256_set_epi64x(0, 0, 0, 0x6060606060606060) +#define _cocw_avx2 _mm256_set_epi64x(0, 0, 0, 0x2020202020202020) +#define _eo_avx2 _mm256_set_epi64x(0x10101010, 0x1010101010101010, 0, 0) + +static cube_t _arraytocube(cube_array_t); +static void _cubetoarray(cube_t, cube_array_t *); +static inline bool _equal(cube_t, cube_t); +static inline cube_t _invertco(cube_t); +static inline cube_t _inverse(cube_t); +static inline cube_t _compose(cube_t, cube_t); + +static inline cube_t +_move_U(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 7, 6, 0, 1, 3, 2, 5, 4, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 1, 0, 3, 2, 4, 5 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_U2(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 7, 6, 4, 5, 3, 2, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 4, 5, 3, 2, 0, 1 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_U3(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 7, 6, 1, 0, 3, 2, 4, 5, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 0, 1, 3, 2, 5, 4 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_D(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 3, 2, 5, 4, 6, 7, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 5, 4, 6, 7, 1, 0 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_D2(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 6, 7, 5, 4, 2, 3, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 5, 4, 2, 3, 1, 0 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_D3(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 2, 3, 5, 4, 7, 6, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 5, 4, 7, 6, 1, 0 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_R(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 4, 10, 9, 7, 11, 6, 5, 8, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 35, 32, 4, 69, 2, 1, 70 + ); + + return _compose(c, m); +} + +static inline cube_t +_move_R2(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 8, 10, 9, 11, 4, 6, 5, 7, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 5, 6, 4, 0, 2, 1, 3 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_R3(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 7, 10, 9, 4, 8, 6, 5, 11, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 32, 35, 4, 70, 2, 1, 69 + ); + + return _compose(c, m); +} + +static inline cube_t +_move_L(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 6, 5, 8, 7, 9, 10, 4, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 34, 6, 5, 33, 3, 68, 71, 0 + ); + + return _compose(c, m); +} + +static inline cube_t +_move_L2(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 9, 10, 8, 7, 5, 6, 4, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 4, 6, 5, 7, 3, 1, 2, 0 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_L3(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 5, 6, 8, 7, 10, 9, 4, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 33, 6, 5, 34, 3, 71, 68, 0 + ); + + return _compose(c, m); +} + +static inline cube_t +_move_F(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 19, 16, 7, 6, 5, 4, 24, 2, 1, 25, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 64, 5, 66, 3, 38, 1, 36 + ); + + return _compose(c, m); +} + +static inline cube_t +_move_F2(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 8, 9, 7, 6, 5, 4, 0, 2, 1, 3, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 4, 5, 6, 3, 0, 1, 2 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_F3(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 16, 19, 7, 6, 5, 4, 25, 2, 1, 24, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 66, 5, 64, 3, 36, 1, 38 + ); + + return _compose(c, m); +} + +static inline cube_t +_move_B(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 18, 17, 9, 8, 7, 6, 5, 4, 3, 26, 27, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 65, 6, 67, 4, 39, 2, 37, 0 + ); + + return _compose(c, m); +} + +static inline cube_t +_move_B2(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 10, 11, 9, 8, 7, 6, 5, 4, 3, 1, 2, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 5, 6, 7, 4, 1, 2, 3, 0 + ); + + return _mm256_shuffle_epi8(c, m); +} + +static inline cube_t +_move_B3(cube_t c) +{ + cube_t m = _mm256_set_epi8( + 0, 0, 0, 0, 17, 18, 9, 8, 7, 6, 5, 4, 3, 27, 26, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 67, 6, 65, 4, 37, 2, 39, 0 + ); + + return _compose(c, m); +} + +static inline cube_t +_trans_UFr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 4, 3, 2, 1, 0 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 4, 3, 2, 1, 0 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_ULr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 24, 27, 26, 25, 3, 2, 1, 0, 6, 7, 4, 5, + 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 0, 1, 6, 7, 5, 4 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 26, 25, 24, 27, 2, 3, 0, 1, 7, 6, 5, 4, + 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 1, 0, 7, 6, 4, 5 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_UBr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 9, 8, 11, 10, 6, 7, 4, 5, 2, 3, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 4, 5, 2, 3, 0, 1 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 9, 8, 11, 10, 6, 7, 4, 5, 2, 3, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 4, 5, 2, 3, 0, 1 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_URr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 26, 25, 24, 27, 2, 3, 0, 1, 7, 6, 5, 4, + 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 1, 0, 7, 6, 4, 5 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 24, 27, 26, 25, 3, 2, 1, 0, 6, 7, 4, 5, + 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 0, 1, 6, 7, 5, 4 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DFr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 10, 11, 8, 9, 5, 4, 7, 6, 0, 1, 2, 3, + 0, 0, 0, 0, 0, 0, 0, 0, 5, 4, 7, 6, 1, 0, 3, 2 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 10, 11, 8, 9, 5, 4, 7, 6, 0, 1, 2, 3, + 0, 0, 0, 0, 0, 0, 0, 0, 5, 4, 7, 6, 1, 0, 3, 2 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DLr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 27, 24, 25, 26, 1, 0, 3, 2, 5, 4, 7, 6, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 2, 5, 4, 6, 7 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 27, 24, 25, 26, 1, 0, 3, 2, 5, 4, 7, 6, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 2, 5, 4, 6, 7 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DBr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 8, 9, 10, 11, 4, 5, 6, 7, 1, 0, 3, 2, + 0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 6, 7, 0, 1, 2, 3 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 8, 9, 10, 11, 4, 5, 6, 7, 1, 0, 3, 2, + 0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 6, 7, 0, 1, 2, 3 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DRr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 25, 26, 27, 24, 0, 1, 2, 3, 4, 5, 6, 7, + 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 3, 4, 5, 7, 6 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 25, 26, 27, 24, 0, 1, 2, 3, 4, 5, 6, 7, + 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 3, 4, 5, 7, 6 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RUr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 3, 2, 1, 0, 25, 26, 27, 24, 21, 22, 23, 20, + 0, 0, 0, 0, 0, 0, 0, 0, 39, 36, 38, 37, 66, 65, 67, 64 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 21, 22, 23, 20, 17, 18, 19, 16, 11, 10, 9, 8, + 0, 0, 0, 0, 0, 0, 0, 0, 71, 69, 68, 70, 33, 35, 34, 32 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RFr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 18, 17, 16, 19, 22, 21, 20, 23, 25, 26, 27, 24, + 0, 0, 0, 0, 0, 0, 0, 0, 65, 66, 67, 64, 39, 36, 37, 38 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 17, 18, 19, 16, 20, 23, 22, 21, 24, 27, 26, 25, + 0, 0, 0, 0, 0, 0, 0, 0, 67, 64, 65, 66, 37, 38, 39, 36 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RDr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 1, 0, 3, 2, 26, 25, 24, 27, 22, 21, 20, 23, + 0, 0, 0, 0, 0, 0, 0, 0, 36, 39, 37, 38, 65, 66, 64, 67 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 20, 23, 22, 21, 16, 19, 18, 17, 9, 8, 11, 10, + 0, 0, 0, 0, 0, 0, 0, 0, 70, 68, 69, 71, 32, 34, 35, 33 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RBr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 16, 19, 18, 17, 21, 22, 23, 20, 26, 25, 24, 27, + 0, 0, 0, 0, 0, 0, 0, 0, 66, 65, 64, 67, 36, 39, 38, 37 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 16, 19, 18, 17, 21, 22, 23, 20, 26, 25, 24, 27, + 0, 0, 0, 0, 0, 0, 0, 0, 66, 65, 64, 67, 36, 39, 38, 37 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LUr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 2, 3, 0, 1, 27, 24, 25, 26, 20, 23, 22, 21, + 0, 0, 0, 0, 0, 0, 0, 0, 38, 37, 39, 36, 67, 64, 66, 65 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 23, 20, 21, 22, 18, 17, 16, 19, 10, 11, 8, 9, + 0, 0, 0, 0, 0, 0, 0, 0, 69, 71, 70, 68, 35, 33, 32, 34 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LFr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 17, 18, 19, 16, 20, 23, 22, 21, 24, 27, 26, 25, + 0, 0, 0, 0, 0, 0, 0, 0, 67, 64, 65, 66, 37, 38, 39, 36 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 18, 17, 16, 19, 22, 21, 20, 23, 25, 26, 27, 24, + 0, 0, 0, 0, 0, 0, 0, 0, 65, 66, 67, 64, 39, 36, 37, 38 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LDr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 0, 1, 2, 3, 24, 27, 26, 25, 23, 20, 21, 22, + 0, 0, 0, 0, 0, 0, 0, 0, 37, 38, 36, 39, 64, 67, 65, 66 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 22, 21, 20, 23, 19, 16, 17, 18, 8, 9, 10, 11, + 0, 0, 0, 0, 0, 0, 0, 0, 68, 70, 71, 69, 34, 32, 33, 35 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LBr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 19, 16, 17, 18, 23, 20, 21, 22, 27, 24, 25, 26, + 0, 0, 0, 0, 0, 0, 0, 0, 64, 67, 66, 65, 38, 37, 36, 39 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 19, 16, 17, 18, 23, 20, 21, 22, 27, 24, 25, 26, + 0, 0, 0, 0, 0, 0, 0, 0, 64, 67, 66, 65, 38, 37, 36, 39 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FUr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 6, 7, 4, 5, 10, 11, 8, 9, 17, 18, 19, 16, + 0, 0, 0, 0, 0, 0, 0, 0, 35, 33, 34, 32, 71, 69, 70, 68 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 6, 7, 4, 5, 10, 11, 8, 9, 17, 18, 19, 16, + 0, 0, 0, 0, 0, 0, 0, 0, 35, 33, 34, 32, 71, 69, 70, 68 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FRr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 21, 22, 23, 20, 17, 18, 19, 16, 11, 10, 9, 8, + 0, 0, 0, 0, 0, 0, 0, 0, 71, 69, 68, 70, 33, 35, 34, 32 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 3, 2, 1, 0, 25, 26, 27, 24, 21, 22, 23, 20, + 0, 0, 0, 0, 0, 0, 0, 0, 39, 36, 38, 37, 66, 65, 67, 64 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FDr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 4, 5, 6, 7, 11, 10, 9, 8, 18, 17, 16, 19, + 0, 0, 0, 0, 0, 0, 0, 0, 33, 35, 32, 34, 69, 71, 68, 70 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 7, 6, 5, 4, 8, 9, 10, 11, 16, 19, 18, 17, + 0, 0, 0, 0, 0, 0, 0, 0, 34, 32, 35, 33, 70, 68, 71, 69 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FLr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 23, 20, 21, 22, 18, 17, 16, 19, 10, 11, 8, 9, + 0, 0, 0, 0, 0, 0, 0, 0, 69, 71, 70, 68, 35, 33, 32, 34 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 2, 3, 0, 1, 27, 24, 25, 26, 20, 23, 22, 21, + 0, 0, 0, 0, 0, 0, 0, 0, 38, 37, 39, 36, 67, 64, 66, 65 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BUr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 7, 6, 5, 4, 8, 9, 10, 11, 16, 19, 18, 17, + 0, 0, 0, 0, 0, 0, 0, 0, 34, 32, 35, 33, 70, 68, 71, 69 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 4, 5, 6, 7, 11, 10, 9, 8, 18, 17, 16, 19, + 0, 0, 0, 0, 0, 0, 0, 0, 33, 35, 32, 34, 69, 71, 68, 70 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BRr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 22, 21, 20, 23, 19, 16, 17, 18, 8, 9, 10, 11, + 0, 0, 0, 0, 0, 0, 0, 0, 68, 70, 71, 69, 34, 32, 33, 35 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 0, 1, 2, 3, 24, 27, 26, 25, 23, 20, 21, 22, + 0, 0, 0, 0, 0, 0, 0, 0, 37, 38, 36, 39, 64, 67, 65, 66 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BDr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 5, 4, 7, 6, 9, 8, 11, 10, 19, 16, 17, 18, + 0, 0, 0, 0, 0, 0, 0, 0, 32, 34, 33, 35, 68, 70, 69, 71 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 5, 4, 7, 6, 9, 8, 11, 10, 19, 16, 17, 18, + 0, 0, 0, 0, 0, 0, 0, 0, 32, 34, 33, 35, 68, 70, 69, 71 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BLr(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 20, 23, 22, 21, 16, 19, 18, 17, 9, 8, 11, 10, + 0, 0, 0, 0, 0, 0, 0, 0, 70, 68, 69, 71, 32, 34, 35, 33 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 1, 0, 3, 2, 26, 25, 24, 27, 22, 21, 20, 23, + 0, 0, 0, 0, 0, 0, 0, 0, 36, 39, 37, 38, 65, 66, 64, 67 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_UFm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 10, 11, 8, 9, 6, 7, 4, 5, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 1, 0, 7, 6, 5, 4 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 10, 11, 8, 9, 6, 7, 4, 5, 3, 2, 1, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 1, 0, 7, 6, 5, 4 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_ULm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 25, 26, 27, 24, 3, 2, 1, 0, 7, 6, 5, 4, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 4, 5, 2, 3, 1, 0 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 25, 26, 27, 24, 3, 2, 1, 0, 7, 6, 5, 4, + 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 4, 5, 2, 3, 1, 0 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_UBm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 8, 9, 10, 11, 7, 6, 5, 4, 2, 3, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, 1, 6, 7, 4, 5 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 8, 9, 10, 11, 7, 6, 5, 4, 2, 3, 0, 1, + 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, 1, 6, 7, 4, 5 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_URm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 27, 24, 25, 26, 2, 3, 0, 1, 6, 7, 4, 5, + 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 5, 4, 3, 2, 0, 1 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 27, 24, 25, 26, 2, 3, 0, 1, 6, 7, 4, 5, + 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 5, 4, 3, 2, 0, 1 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DFm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 4, 5, 6, 7, 0, 1, 2, 3, + 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 3, 2, 5, 4, 7, 6 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 11, 10, 9, 8, 4, 5, 6, 7, 0, 1, 2, 3, + 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 3, 2, 5, 4, 7, 6 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DLm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 26, 25, 24, 27, 1, 0, 3, 2, 4, 5, 6, 7, + 0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 7, 6, 1, 0, 2, 3 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 24, 27, 26, 25, 0, 1, 2, 3, 5, 4, 7, 6, + 0, 0, 0, 0, 0, 0, 0, 0, 5, 4, 6, 7, 0, 1, 3, 2 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DBm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 9, 8, 11, 10, 5, 4, 7, 6, 1, 0, 3, 2, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 9, 8, 11, 10, 5, 4, 7, 6, 1, 0, 3, 2, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DRm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 24, 27, 26, 25, 0, 1, 2, 3, 5, 4, 7, 6, + 0, 0, 0, 0, 0, 0, 0, 0, 5, 4, 6, 7, 0, 1, 3, 2 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 26, 25, 24, 27, 1, 0, 3, 2, 4, 5, 6, 7, + 0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 7, 6, 1, 0, 2, 3 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RUm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 3, 2, 1, 0, 24, 27, 26, 25, 20, 23, 22, 21, + 0, 0, 0, 0, 0, 0, 0, 0, 35, 32, 34, 33, 70, 69, 71, 68 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 22, 21, 20, 23, 18, 17, 16, 19, 11, 10, 9, 8, + 0, 0, 0, 0, 0, 0, 0, 0, 33, 35, 34, 32, 71, 69, 68, 70 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RFm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 18, 17, 16, 19, 23, 20, 21, 22, 24, 27, 26, 25, + 0, 0, 0, 0, 0, 0, 0, 0, 69, 70, 71, 68, 35, 32, 33, 34 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 18, 17, 16, 19, 23, 20, 21, 22, 24, 27, 26, 25, + 0, 0, 0, 0, 0, 0, 0, 0, 37, 38, 39, 36, 67, 64, 65, 66 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RDm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 1, 0, 3, 2, 27, 24, 25, 26, 23, 20, 21, 22, + 0, 0, 0, 0, 0, 0, 0, 0, 32, 35, 33, 34, 69, 70, 68, 71 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 23, 20, 21, 22, 19, 16, 17, 18, 9, 8, 11, 10, + 0, 0, 0, 0, 0, 0, 0, 0, 32, 34, 35, 33, 70, 68, 69, 71 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RBm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 16, 19, 18, 17, 20, 23, 22, 21, 27, 24, 25, 26, + 0, 0, 0, 0, 0, 0, 0, 0, 70, 69, 68, 71, 32, 35, 34, 33 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 19, 16, 17, 18, 22, 21, 20, 23, 26, 25, 24, 27, + 0, 0, 0, 0, 0, 0, 0, 0, 36, 39, 38, 37, 66, 65, 64, 67 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LUm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 2, 3, 0, 1, 26, 25, 24, 27, 21, 22, 23, 20, + 0, 0, 0, 0, 0, 0, 0, 0, 34, 33, 35, 32, 71, 68, 70, 69 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 20, 23, 22, 21, 17, 18, 19, 16, 10, 11, 8, 9, + 0, 0, 0, 0, 0, 0, 0, 0, 35, 33, 32, 34, 69, 71, 70, 68 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LFm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 17, 18, 19, 16, 21, 22, 23, 20, 25, 26, 27, 24, + 0, 0, 0, 0, 0, 0, 0, 0, 71, 68, 69, 70, 33, 34, 35, 32 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 17, 18, 19, 16, 21, 22, 23, 20, 25, 26, 27, 24, + 0, 0, 0, 0, 0, 0, 0, 0, 39, 36, 37, 38, 65, 66, 67, 64 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LDm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 0, 1, 2, 3, 25, 26, 27, 24, 22, 21, 20, 23, + 0, 0, 0, 0, 0, 0, 0, 0, 33, 34, 32, 35, 68, 71, 69, 70 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 21, 22, 23, 20, 16, 19, 18, 17, 8, 9, 10, 11, + 0, 0, 0, 0, 0, 0, 0, 0, 34, 32, 33, 35, 68, 70, 71, 69 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LBm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 19, 16, 17, 18, 22, 21, 20, 23, 26, 25, 24, 27, + 0, 0, 0, 0, 0, 0, 0, 0, 68, 71, 70, 69, 34, 33, 32, 35 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 16, 19, 18, 17, 20, 23, 22, 21, 27, 24, 25, 26, + 0, 0, 0, 0, 0, 0, 0, 0, 38, 37, 36, 39, 64, 67, 66, 65 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FUm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 7, 6, 5, 4, 11, 10, 9, 8, 17, 18, 19, 16, + 0, 0, 0, 0, 0, 0, 0, 0, 39, 37, 38, 36, 67, 65, 66, 64 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 7, 6, 5, 4, 11, 10, 9, 8, 17, 18, 19, 16, + 0, 0, 0, 0, 0, 0, 0, 0, 71, 69, 70, 68, 35, 33, 34, 32 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FRm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 20, 23, 22, 21, 17, 18, 19, 16, 10, 11, 8, 9, + 0, 0, 0, 0, 0, 0, 0, 0, 67, 65, 64, 66, 37, 39, 38, 36 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 2, 3, 0, 1, 26, 25, 24, 27, 21, 22, 23, 20, + 0, 0, 0, 0, 0, 0, 0, 0, 66, 65, 67, 64, 39, 36, 38, 37 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FDm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 5, 4, 7, 6, 10, 11, 8, 9, 18, 17, 16, 19, + 0, 0, 0, 0, 0, 0, 0, 0, 37, 39, 36, 38, 65, 67, 64, 66 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 6, 7, 4, 5, 9, 8, 11, 10, 16, 19, 18, 17, + 0, 0, 0, 0, 0, 0, 0, 0, 70, 68, 71, 69, 34, 32, 35, 33 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FLm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 22, 21, 20, 23, 18, 17, 16, 19, 11, 10, 9, 8, + 0, 0, 0, 0, 0, 0, 0, 0, 65, 67, 66, 64, 39, 37, 36, 38 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 3, 2, 1, 0, 24, 27, 26, 25, 20, 23, 22, 21, + 0, 0, 0, 0, 0, 0, 0, 0, 67, 64, 66, 65, 38, 37, 39, 36 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BUm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 6, 7, 4, 5, 9, 8, 11, 10, 16, 19, 18, 17, + 0, 0, 0, 0, 0, 0, 0, 0, 38, 36, 39, 37, 66, 64, 67, 65 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 5, 4, 7, 6, 10, 11, 8, 9, 18, 17, 16, 19, + 0, 0, 0, 0, 0, 0, 0, 0, 69, 71, 68, 70, 33, 35, 32, 34 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BRm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 23, 20, 21, 22, 19, 16, 17, 18, 9, 8, 11, 10, + 0, 0, 0, 0, 0, 0, 0, 0, 64, 66, 67, 65, 38, 36, 37, 39 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 1, 0, 3, 2, 27, 24, 25, 26, 23, 20, 21, 22, + 0, 0, 0, 0, 0, 0, 0, 0, 64, 67, 65, 66, 37, 38, 36, 39 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BDm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 4, 5, 6, 7, 8, 9, 10, 11, 19, 16, 17, 18, + 0, 0, 0, 0, 0, 0, 0, 0, 36, 38, 37, 39, 64, 66, 65, 67 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 4, 5, 6, 7, 8, 9, 10, 11, 19, 16, 17, 18, + 0, 0, 0, 0, 0, 0, 0, 0, 68, 70, 69, 71, 32, 34, 33, 35 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BLm(cube_t c) +{ + cube_t ret; + + cube_t tn = _mm256_set_epi8( + 0, 0, 0, 0, 21, 22, 23, 20, 16, 19, 18, 17, 8, 9, 10, 11, + 0, 0, 0, 0, 0, 0, 0, 0, 66, 64, 65, 67, 36, 38, 39, 37 + ); + cube_t ti = _mm256_set_epi8( + 0, 0, 0, 0, 0, 1, 2, 3, 25, 26, 27, 24, 22, 21, 20, 23, + 0, 0, 0, 0, 0, 0, 0, 0, 65, 66, 64, 67, 36, 39, 37, 38 + ); + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static cube_t +_arraytocube(cube_array_t a) +{ + return _mm256_loadu_si256((__m256i_u *)&a); +} + +static void +_cubetoarray(cube_t c, cube_array_t *a) +{ + _mm256_storeu_si256((__m256i_u *)a, c); +} + +static inline bool +_equal(cube_t c1, cube_t c2) +{ + uint32_t mask; + __m256i cmp; + + cmp = _mm256_cmpeq_epi8(c1, c2); + mask = _mm256_movemask_epi8(cmp); + + return mask == 0xffffffffU; +} + +static inline cube_t +_invertco(cube_t c) +{ + cube_t co, shleft, shright, summed, newco, cleanco, ret; + + co = _mm256_and_si256(c, _co2_avx2); + shleft = _mm256_slli_epi32(co, 1); + shright = _mm256_srli_epi32(co, 1); + summed = _mm256_or_si256(shleft, shright); + newco = _mm256_and_si256(summed, _co2_avx2); + cleanco = _mm256_xor_si256(c, co); + ret = _mm256_or_si256(cleanco, newco); + + return ret; +} + +static inline cube_t +_inverse(cube_t c) +{ + /* Method taken from Andrew Skalski's vcube[1]. The addition sequence + * was generated using [2]. + * [1] https://github.com/Voltara/vcube + * [2] http://wwwhomes.uni-bielefeld.de/achim/addition_chain.html + */ + cube_t v3, vi, vo, vp, ret; + + v3 = _mm256_shuffle_epi8(c, c); + v3 = _mm256_shuffle_epi8(v3, c); + vi = _mm256_shuffle_epi8(v3, v3); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, v3); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, c); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, v3); + vi = _mm256_shuffle_epi8(vi, vi); + vi = _mm256_shuffle_epi8(vi, c); + + vo = _mm256_and_si256(c, _mm256_or_si256(_eo_avx2, _co2_avx2)); + vo = _mm256_shuffle_epi8(vo, vi); + vp = _mm256_andnot_si256(_mm256_or_si256(_eo_avx2, _co2_avx2), vi); + ret = _mm256_or_si256(vp, vo); + + return _invertco(ret); +} + +static inline cube_t +_compose(cube_t c1, cube_t c2) +{ + cube_t ret; + + cube_t s, eo2, ed, co1, co2, aux, auy1, auy2, auz1, auz2, coclean; + + eo2 = _mm256_and_si256(c2, _eo_avx2); + s = _mm256_shuffle_epi8(c1, c2); + ed = _mm256_xor_si256(s, eo2); + co1 = _mm256_and_si256(s, _co2_avx2); + co2 = _mm256_and_si256(c2, _co2_avx2); + aux = _mm256_add_epi8(co1, co2); + auy1 = _mm256_add_epi8(aux, _cocw_avx2); + auy2 = _mm256_srli_epi32(auy1, 2); + auz1 = _mm256_add_epi8(aux, auy2); + auz2 = _mm256_and_si256(auz1, _co2_avx2); + coclean = _mm256_andnot_si256(_co2_avx2, ed); + ret = _mm256_or_si256(coclean, auz2); + + return ret; +} + + +/****************************************************************************** +Section: portable fast methods + +This section contains performance-critical methods that do not use +advanced CPU instructions. They are used as an alternative to the ones +in the previous section(s) for unsupported architectures. +******************************************************************************/ + +#else + +#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; + +static cube_t _arraytocube(cube_array_t); +static void _cubetoarray(cube_t, cube_array_t *); +static inline bool _equal(cube_t, cube_t); +static inline cube_t _invertco(cube_t); +static inline cube_t _inverse(cube_t); +static inline cube_t _compose(cube_t, cube_t); + +static inline cube_t +_move_U(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM4(ret.e, _e_uf, _e_ul, _e_ub, _e_ur) + PERM4(ret.c, _c_ufr, _c_ufl, _c_ubl, _c_ubr) + + return ret; +} + +static inline cube_t +_move_U2(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM22(ret.e, _e_uf, _e_ub, _e_ul, _e_ur) + PERM22(ret.c, _c_ufr, _c_ubl, _c_ufl, _c_ubr) + + return ret; +} + +static inline cube_t +_move_U3(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM4(ret.e, _e_uf, _e_ur, _e_ub, _e_ul) + PERM4(ret.c, _c_ufr, _c_ubr, _c_ubl, _c_ufl) + + return ret; +} + +static inline cube_t +_move_D(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM4(ret.e, _e_df, _e_dr, _e_db, _e_dl) + PERM4(ret.c, _c_dfr, _c_dbr, _c_dbl, _c_dfl) + + return ret; +} + +static inline cube_t +_move_D2(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM22(ret.e, _e_df, _e_db, _e_dr, _e_dl) + PERM22(ret.c, _c_dfr, _c_dbl, _c_dbr, _c_dfl) + + return ret; +} + +static inline cube_t +_move_D3(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM4(ret.e, _e_df, _e_dl, _e_db, _e_dr) + PERM4(ret.c, _c_dfr, _c_dfl, _c_dbl, _c_dbr) + + return ret; +} + +static inline cube_t +_move_R(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_move_R2(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM22(ret.e, _e_ur, _e_dr, _e_fr, _e_br) + PERM22(ret.c, _c_ufr, _c_dbr, _c_ubr, _c_dfr) + + return ret; +} + +static inline cube_t +_move_R3(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_move_L(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_move_L2(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM22(ret.e, _e_ul, _e_dl, _e_fl, _e_bl) + PERM22(ret.c, _c_ufl, _c_dbl, _c_ubl, _c_dfl) + + return ret; +} + +static inline cube_t +_move_L3(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_move_F(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_move_F2(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM22(ret.e, _e_uf, _e_df, _e_fr, _e_fl) + PERM22(ret.c, _c_ufr, _c_dfl, _c_ufl, _c_dfr) + + return ret; +} + +static inline cube_t +_move_F3(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_move_B(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_move_B2(cube_t c) +{ + uint8_t aux; + cube_t ret = c; + + PERM22(ret.e, _e_ub, _e_db, _e_br, _e_bl) + PERM22(ret.c, _c_ubr, _c_dbl, _c_ubl, _c_dbr) + + return ret; +} + +static inline cube_t +_move_B3(cube_t c) +{ + uint8_t aux, auy, auz; + cube_t ret = c; + + 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; +} + +static inline cube_t +_invertco(cube_t c) +{ + uint8_t i, piece, orien; + cube_t ret; + + ret = c; + for (i = 0; i < 8; i++) { + piece = get_corner(c, i); + orien = ((piece << 1) | (piece >> 1)) & _cobits2; + set_corner(ret, i, (piece & _pbits) | orien); + } + + return ret; +} + +static inline cube_t +_trans_UFr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {0, 1, 2, 3, 4, 5, 6, 7}, + .e = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} + }; + cube_t ti = { + .c = {0, 1, 2, 3, 4, 5, 6, 7}, + .e = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_ULr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {4, 5, 7, 6, 1, 0, 2, 3}, + .e = {5, 4, 7, 6, 0, 1, 2, 3, 25, 26, 27, 24} + }; + cube_t ti = { + .c = {5, 4, 6, 7, 0, 1, 3, 2}, + .e = {4, 5, 6, 7, 1, 0, 3, 2, 27, 24, 25, 26} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_UBr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {1, 0, 3, 2, 5, 4, 7, 6}, + .e = {1, 0, 3, 2, 5, 4, 7, 6, 10, 11, 8, 9} + }; + cube_t ti = { + .c = {1, 0, 3, 2, 5, 4, 7, 6}, + .e = {1, 0, 3, 2, 5, 4, 7, 6, 10, 11, 8, 9} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_URr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {5, 4, 6, 7, 0, 1, 3, 2}, + .e = {4, 5, 6, 7, 1, 0, 3, 2, 27, 24, 25, 26} + }; + cube_t ti = { + .c = {4, 5, 7, 6, 1, 0, 2, 3}, + .e = {5, 4, 7, 6, 0, 1, 2, 3, 25, 26, 27, 24} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DFr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {2, 3, 0, 1, 6, 7, 4, 5}, + .e = {3, 2, 1, 0, 6, 7, 4, 5, 9, 8, 11, 10} + }; + cube_t ti = { + .c = {2, 3, 0, 1, 6, 7, 4, 5}, + .e = {3, 2, 1, 0, 6, 7, 4, 5, 9, 8, 11, 10} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DLr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {7, 6, 4, 5, 2, 3, 1, 0}, + .e = {6, 7, 4, 5, 2, 3, 0, 1, 26, 25, 24, 27} + }; + cube_t ti = { + .c = {7, 6, 4, 5, 2, 3, 1, 0}, + .e = {6, 7, 4, 5, 2, 3, 0, 1, 26, 25, 24, 27} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DBr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {3, 2, 1, 0, 7, 6, 5, 4}, + .e = {2, 3, 0, 1, 7, 6, 5, 4, 11, 10, 9, 8} + }; + cube_t ti = { + .c = {3, 2, 1, 0, 7, 6, 5, 4}, + .e = {2, 3, 0, 1, 7, 6, 5, 4, 11, 10, 9, 8} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_DRr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {6, 7, 5, 4, 3, 2, 0, 1}, + .e = {7, 6, 5, 4, 3, 2, 1, 0, 24, 27, 26, 25} + }; + cube_t ti = { + .c = {6, 7, 5, 4, 3, 2, 0, 1}, + .e = {7, 6, 5, 4, 3, 2, 1, 0, 24, 27, 26, 25} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RUr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {64, 67, 65, 66, 37, 38, 36, 39}, + .e = {20, 23, 22, 21, 24, 27, 26, 25, 0, 1, 2, 3} + }; + cube_t ti = { + .c = {32, 34, 35, 33, 70, 68, 69, 71}, + .e = {8, 9, 10, 11, 16, 19, 18, 17, 20, 23, 22, 21} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RFr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {38, 37, 36, 39, 64, 67, 66, 65}, + .e = {24, 27, 26, 25, 23, 20, 21, 22, 19, 16, 17, 18} + }; + cube_t ti = { + .c = {36, 39, 38, 37, 66, 65, 64, 67}, + .e = {25, 26, 27, 24, 21, 22, 23, 20, 16, 19, 18, 17} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RDr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {67, 64, 66, 65, 38, 37, 39, 36}, + .e = {23, 20, 21, 22, 27, 24, 25, 26, 2, 3, 0, 1} + }; + cube_t ti = { + .c = {33, 35, 34, 32, 71, 69, 68, 70}, + .e = {10, 11, 8, 9, 17, 18, 19, 16, 21, 22, 23, 20} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_RBr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {37, 38, 39, 36, 67, 64, 65, 66}, + .e = {27, 24, 25, 26, 20, 23, 22, 21, 17, 18, 19, 16} + }; + cube_t ti = { + .c = {37, 38, 39, 36, 67, 64, 65, 66}, + .e = {27, 24, 25, 26, 20, 23, 22, 21, 17, 18, 19, 16} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LUr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {65, 66, 64, 67, 36, 39, 37, 38}, + .e = {21, 22, 23, 20, 26, 25, 24, 27, 1, 0, 3, 2} + }; + cube_t ti = { + .c = {34, 32, 33, 35, 68, 70, 71, 69}, + .e = {9, 8, 11, 10, 19, 16, 17, 18, 22, 21, 20, 23} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LFr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {36, 39, 38, 37, 66, 65, 64, 67}, + .e = {25, 26, 27, 24, 21, 22, 23, 20, 16, 19, 18, 17} + }; + cube_t ti = { + .c = {38, 37, 36, 39, 64, 67, 66, 65}, + .e = {24, 27, 26, 25, 23, 20, 21, 22, 19, 16, 17, 18} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LDr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {66, 65, 67, 64, 39, 36, 38, 37}, + .e = {22, 21, 20, 23, 25, 26, 27, 24, 3, 2, 1, 0} + }; + cube_t ti = { + .c = {35, 33, 32, 34, 69, 71, 70, 68}, + .e = {11, 10, 9, 8, 18, 17, 16, 19, 23, 20, 21, 22} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_LBr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {39, 36, 37, 38, 65, 66, 67, 64}, + .e = {26, 25, 24, 27, 22, 21, 20, 23, 18, 17, 16, 19} + }; + cube_t ti = { + .c = {39, 36, 37, 38, 65, 66, 67, 64}, + .e = {26, 25, 24, 27, 22, 21, 20, 23, 18, 17, 16, 19} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FUr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {68, 70, 69, 71, 32, 34, 33, 35}, + .e = {16, 19, 18, 17, 9, 8, 11, 10, 5, 4, 7, 6} + }; + cube_t ti = { + .c = {68, 70, 69, 71, 32, 34, 33, 35}, + .e = {16, 19, 18, 17, 9, 8, 11, 10, 5, 4, 7, 6} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FRr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {32, 34, 35, 33, 70, 68, 69, 71}, + .e = {8, 9, 10, 11, 16, 19, 18, 17, 20, 23, 22, 21} + }; + cube_t ti = { + .c = {64, 67, 65, 66, 37, 38, 36, 39}, + .e = {20, 23, 22, 21, 24, 27, 26, 25, 0, 1, 2, 3} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FDr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {70, 68, 71, 69, 34, 32, 35, 33}, + .e = {19, 16, 17, 18, 8, 9, 10, 11, 7, 6, 5, 4} + }; + cube_t ti = { + .c = {69, 71, 68, 70, 33, 35, 32, 34}, + .e = {17, 18, 19, 16, 11, 10, 9, 8, 4, 5, 6, 7} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_FLr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {34, 32, 33, 35, 68, 70, 71, 69}, + .e = {9, 8, 11, 10, 19, 16, 17, 18, 22, 21, 20, 23} + }; + cube_t ti = { + .c = {65, 66, 64, 67, 36, 39, 37, 38}, + .e = {21, 22, 23, 20, 26, 25, 24, 27, 1, 0, 3, 2} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BUr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {69, 71, 68, 70, 33, 35, 32, 34}, + .e = {17, 18, 19, 16, 11, 10, 9, 8, 4, 5, 6, 7} + }; + cube_t ti = { + .c = {70, 68, 71, 69, 34, 32, 35, 33}, + .e = {19, 16, 17, 18, 8, 9, 10, 11, 7, 6, 5, 4} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BRr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {35, 33, 32, 34, 69, 71, 70, 68}, + .e = {11, 10, 9, 8, 18, 17, 16, 19, 23, 20, 21, 22} + }; + cube_t ti = { + .c = {66, 65, 67, 64, 39, 36, 38, 37}, + .e = {22, 21, 20, 23, 25, 26, 27, 24, 3, 2, 1, 0} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BDr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {71, 69, 70, 68, 35, 33, 34, 32}, + .e = {18, 17, 16, 19, 10, 11, 8, 9, 6, 7, 4, 5} + }; + cube_t ti = { + .c = {71, 69, 70, 68, 35, 33, 34, 32}, + .e = {18, 17, 16, 19, 10, 11, 8, 9, 6, 7, 4, 5} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_BLr(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {33, 35, 34, 32, 71, 69, 68, 70}, + .e = {10, 11, 8, 9, 17, 18, 19, 16, 21, 22, 23, 20} + }; + cube_t ti = { + .c = {67, 64, 66, 65, 38, 37, 39, 36}, + .e = {23, 20, 21, 22, 27, 24, 25, 26, 2, 3, 0, 1} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + + return ret; +} + +static inline cube_t +_trans_UFm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {4, 5, 6, 7, 0, 1, 2, 3}, + .e = {0, 1, 2, 3, 5, 4, 7, 6, 9, 8, 11, 10} + }; + cube_t ti = { + .c = {4, 5, 6, 7, 0, 1, 2, 3}, + .e = {0, 1, 2, 3, 5, 4, 7, 6, 9, 8, 11, 10} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_ULm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {0, 1, 3, 2, 5, 4, 6, 7}, + .e = {4, 5, 6, 7, 0, 1, 2, 3, 24, 27, 26, 25} + }; + cube_t ti = { + .c = {0, 1, 3, 2, 5, 4, 6, 7}, + .e = {4, 5, 6, 7, 0, 1, 2, 3, 24, 27, 26, 25} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_UBm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {5, 4, 7, 6, 1, 0, 3, 2}, + .e = {1, 0, 3, 2, 4, 5, 6, 7, 11, 10, 9, 8} + }; + cube_t ti = { + .c = {5, 4, 7, 6, 1, 0, 3, 2}, + .e = {1, 0, 3, 2, 4, 5, 6, 7, 11, 10, 9, 8} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_URm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {1, 0, 2, 3, 4, 5, 7, 6}, + .e = {5, 4, 7, 6, 1, 0, 3, 2, 26, 25, 24, 27} + }; + cube_t ti = { + .c = {1, 0, 2, 3, 4, 5, 7, 6}, + .e = {5, 4, 7, 6, 1, 0, 3, 2, 26, 25, 24, 27} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DFm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {6, 7, 4, 5, 2, 3, 0, 1}, + .e = {3, 2, 1, 0, 7, 6, 5, 4, 8, 9, 10, 11} + }; + cube_t ti = { + .c = {6, 7, 4, 5, 2, 3, 0, 1}, + .e = {3, 2, 1, 0, 7, 6, 5, 4, 8, 9, 10, 11} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DLm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {3, 2, 0, 1, 6, 7, 5, 4}, + .e = {7, 6, 5, 4, 2, 3, 0, 1, 27, 24, 25, 26} + }; + cube_t ti = { + .c = {2, 3, 1, 0, 7, 6, 4, 5}, + .e = {6, 7, 4, 5, 3, 2, 1, 0, 25, 26, 27, 24} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DBm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {7, 6, 5, 4, 3, 2, 1, 0}, + .e = {2, 3, 0, 1, 6, 7, 4, 5, 10, 11, 8, 9} + }; + cube_t ti = { + .c = {7, 6, 5, 4, 3, 2, 1, 0}, + .e = {2, 3, 0, 1, 6, 7, 4, 5, 10, 11, 8, 9} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_DRm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {2, 3, 1, 0, 7, 6, 4, 5}, + .e = {6, 7, 4, 5, 3, 2, 1, 0, 25, 26, 27, 24} + }; + cube_t ti = { + .c = {3, 2, 0, 1, 6, 7, 5, 4}, + .e = {7, 6, 5, 4, 2, 3, 0, 1, 27, 24, 25, 26} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RUm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {68, 71, 69, 70, 33, 34, 32, 35}, + .e = {21, 22, 23, 20, 25, 26, 27, 24, 0, 1, 2, 3} + }; + cube_t ti = { + .c = {70, 68, 69, 71, 32, 34, 35, 33}, + .e = {8, 9, 10, 11, 19, 16, 17, 18, 23, 20, 21, 22} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RFm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {34, 33, 32, 35, 68, 71, 70, 69}, + .e = {25, 26, 27, 24, 22, 21, 20, 23, 19, 16, 17, 18} + }; + cube_t ti = { + .c = {66, 65, 64, 67, 36, 39, 38, 37}, + .e = {25, 26, 27, 24, 22, 21, 20, 23, 19, 16, 17, 18} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RDm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {71, 68, 70, 69, 34, 33, 35, 32}, + .e = {22, 21, 20, 23, 26, 25, 24, 27, 2, 3, 0, 1} + }; + cube_t ti = { + .c = {71, 69, 68, 70, 33, 35, 34, 32}, + .e = {10, 11, 8, 9, 18, 17, 16, 19, 22, 21, 20, 23} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_RBm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {33, 34, 35, 32, 71, 68, 69, 70}, + .e = {26, 25, 24, 27, 21, 22, 23, 20, 17, 18, 19, 16} + }; + cube_t ti = { + .c = {67, 64, 65, 66, 37, 38, 39, 36}, + .e = {27, 24, 25, 26, 23, 20, 21, 22, 18, 17, 16, 19} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LUm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {69, 70, 68, 71, 32, 35, 33, 34}, + .e = {20, 23, 22, 21, 27, 24, 25, 26, 1, 0, 3, 2} + }; + cube_t ti = { + .c = {68, 70, 71, 69, 34, 32, 33, 35}, + .e = {9, 8, 11, 10, 16, 19, 18, 17, 21, 22, 23, 20} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LFm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {32, 35, 34, 33, 70, 69, 68, 71}, + .e = {24, 27, 26, 25, 20, 23, 22, 21, 16, 19, 18, 17} + }; + cube_t ti = { + .c = {64, 67, 66, 65, 38, 37, 36, 39}, + .e = {24, 27, 26, 25, 20, 23, 22, 21, 16, 19, 18, 17} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LDm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {70, 69, 71, 68, 35, 32, 34, 33}, + .e = {23, 20, 21, 22, 24, 27, 26, 25, 3, 2, 1, 0} + }; + cube_t ti = { + .c = {69, 71, 70, 68, 35, 33, 32, 34}, + .e = {11, 10, 9, 8, 17, 18, 19, 16, 20, 23, 22, 21} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_LBm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {35, 32, 33, 34, 69, 70, 71, 68}, + .e = {27, 24, 25, 26, 23, 20, 21, 22, 18, 17, 16, 19} + }; + cube_t ti = { + .c = {65, 66, 67, 64, 39, 36, 37, 38}, + .e = {26, 25, 24, 27, 21, 22, 23, 20, 17, 18, 19, 16} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FUm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {64, 66, 65, 67, 36, 38, 37, 39}, + .e = {16, 19, 18, 17, 8, 9, 10, 11, 4, 5, 6, 7} + }; + cube_t ti = { + .c = {32, 34, 33, 35, 68, 70, 69, 71}, + .e = {16, 19, 18, 17, 8, 9, 10, 11, 4, 5, 6, 7} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FRm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {36, 38, 39, 37, 66, 64, 65, 67}, + .e = {9, 8, 11, 10, 16, 19, 18, 17, 21, 22, 23, 20} + }; + cube_t ti = { + .c = {37, 38, 36, 39, 64, 67, 65, 66}, + .e = {20, 23, 22, 21, 27, 24, 25, 26, 1, 0, 3, 2} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FDm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {66, 64, 67, 65, 38, 36, 39, 37}, + .e = {19, 16, 17, 18, 9, 8, 11, 10, 6, 7, 4, 5} + }; + cube_t ti = { + .c = {33, 35, 32, 34, 69, 71, 68, 70}, + .e = {17, 18, 19, 16, 10, 11, 8, 9, 5, 4, 7, 6} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_FLm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {38, 36, 37, 39, 64, 66, 67, 65}, + .e = {8, 9, 10, 11, 19, 16, 17, 18, 23, 20, 21, 22} + }; + cube_t ti = { + .c = {36, 39, 37, 38, 65, 66, 64, 67}, + .e = {21, 22, 23, 20, 25, 26, 27, 24, 0, 1, 2, 3} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BUm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {65, 67, 64, 66, 37, 39, 36, 38}, + .e = {17, 18, 19, 16, 10, 11, 8, 9, 5, 4, 7, 6} + }; + cube_t ti = { + .c = {34, 32, 35, 33, 70, 68, 71, 69}, + .e = {19, 16, 17, 18, 9, 8, 11, 10, 6, 7, 4, 5} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BRm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {39, 37, 36, 38, 65, 67, 66, 64}, + .e = {10, 11, 8, 9, 18, 17, 16, 19, 22, 21, 20, 23} + }; + cube_t ti = { + .c = {39, 36, 38, 37, 66, 65, 67, 64}, + .e = {22, 21, 20, 23, 26, 25, 24, 27, 2, 3, 0, 1} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BDm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {67, 65, 66, 64, 39, 37, 38, 36}, + .e = {18, 17, 16, 19, 11, 10, 9, 8, 7, 6, 5, 4} + }; + cube_t ti = { + .c = {35, 33, 34, 32, 71, 69, 70, 68}, + .e = {18, 17, 16, 19, 11, 10, 9, 8, 7, 6, 5, 4} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static inline cube_t +_trans_BLm(cube_t c) +{ + cube_t ret; + cube_t tn = { + .c = {37, 39, 38, 36, 67, 65, 64, 66}, + .e = {11, 10, 9, 8, 17, 18, 19, 16, 20, 23, 22, 21} + }; + cube_t ti = { + .c = {38, 37, 39, 36, 67, 64, 66, 65}, + .e = {23, 20, 21, 22, 24, 27, 26, 25, 3, 2, 1, 0} + }; + + ret = compose(tn, c); + ret = compose(ret, ti); + ret = _invertco(ret); + + return ret; +} + +static cube_t +_arraytocube(cube_array_t a) +{ + cube_t c; + memcpy(&c, &a, sizeof(cube_t)); + return c; +} + +static void +_cubetoarray(cube_t c, cube_array_t *a) +{ + memcpy(a, &c, sizeof(cube_t)); +} + +static inline bool +_equal(cube_t c1, cube_t c2) +{ + uint8_t i; + bool ret; + + ret = true; + for (i = 0; i < 8; i++) + ret = ret && c1.c[i] == c2.c[i]; + for (i = 0; i < 12; i++) + ret = ret && c1.e[i] == c2.e[i]; + + return ret; +} + +static inline cube_t +_inverse(cube_t c) +{ + cube_t ret; + uint8_t i, piece, orien; + + ret = _arraytocube(zerocube_array); + + for (i = 0; i < 12; i++) { + piece = get_edge(c, i); + orien = piece & _eobit; + set_edge(ret, piece & _pbits, i | orien); + } + + for (i = 0; i < 8; i++) { + piece = get_corner(c, i); + orien = ((piece << 1) | (piece >> 1)) & _cobits2; + set_corner(ret, piece & _pbits, i | orien); + } + + return ret; +} + +static inline cube_t +_compose(cube_t c1, cube_t c2) +{ + cube_t ret; + uint8_t i, piece1, piece2, p, orien, aux, auy; + + ret = _arraytocube(zerocube_array); + + for (i = 0; i < 12; i++) { + piece2 = get_edge(c2, i); + p = piece2 & _pbits; + piece1 = get_edge(c1, p); + orien = (piece2 ^ piece1) & _eobit; + set_edge(ret, i, (piece1 & _pbits) | orien); + } + + for (i = 0; i < 8; i++) { + piece2 = get_corner(c2, i); + p = piece2 & _pbits; + piece1 = get_corner(c1, p); + aux = (piece2 & _cobits) + (piece1 & _cobits); + auy = (aux + _ctwist_cw) >> 2U; + orien = (aux + auy) & _cobits2; + set_corner(ret, i, (piece1 & _pbits) | orien); + } + + return ret; +} + + +#endif + +/****************************************************************************** +Section: generic methods. + +This section contains functions that are based (directly or indirectly) +on the per-architecture functions defined in the previous sections. Many +of them are public functions from cube.h +******************************************************************************/ + +cube_t +solvedcube(void) +{ + cube_t solved; + solved = _arraytocube(solvedcube_array); + return solved; +} + +cube_t +zerocube(void) +{ + cube_t solved; + solved = _arraytocube(zerocube_array); + return solved; +} + +cube_t +readcube(format_t format, char *buf) +{ + cube_array_t arr; + arr = readcube_array(format, buf); + return _arraytocube(arr); +} + +void +writecube(format_t format, cube_t cube, char *buf) +{ + cube_array_t arr; + _cubetoarray(cube, &arr); + writecube_array(format, arr, buf); +} + +bool +isconsistent(cube_t c) +{ + cube_array_t arr; + _cubetoarray(c, &arr); + return isconsistent_array(arr); +} + +bool +issolvable(cube_t c) +{ + cube_array_t arr; + _cubetoarray(c, &arr); + return issolvable_array(arr); +} + +bool +iserror(cube_t c) +{ + cube_array_t arr; + _cubetoarray(c, &arr); + return iserror_array(arr); +} + +bool +equal(cube_t c1, cube_t c2) +{ + return _equal(c1, c2); +} + +bool +issolved(cube_t cube) +{ + cube_t solved; + solved = _arraytocube(solvedcube_array); + return equal(cube, solved); +} + +cube_t +move(cube_t c, move_t m) +{ +#ifdef DEBUG + if (!isconsistent(c)) { + fprintf(stderr, "move error, inconsistent cube\n"); + return _arraytocube(zerocube_array); + } +#endif + + switch (m) { + case U: + return _move_U(c); + case U2: + return _move_U2(c); + case U3: + return _move_U3(c); + case D: + return _move_D(c); + case D2: + return _move_D2(c); + case D3: + return _move_D3(c); + case R: + return _move_R(c); + case R2: + return _move_R2(c); + case R3: + return _move_R3(c); + case L: + return _move_L(c); + case L2: + return _move_L2(c); + case L3: + return _move_L3(c); + case F: + return _move_F(c); + case F2: + return _move_F2(c); + case F3: + return _move_F3(c); + case B: + return _move_B(c); + case B2: + return _move_B2(c); + case B3: + return _move_B3(c); + default: +#ifdef DEBUG + fprintf(stderr, "mover error, unknown move\n"); +#endif + return _arraytocube(zerocube_array); + } +} + +cube_t +inverse(cube_t c) +{ +#ifdef DEBUG + if (!isconsistent(c)) { + fprintf(stderr, "inverse error, inconsistent cube\n"); + return zerocube(); + } +#endif + + return _inverse(c); +} + +cube_t +compose(cube_t c1, cube_t c2) +{ +#ifdef DEBUG + if (!isconsistent(c1) || !isconsistent(c2)) { + fprintf(stderr, "compose error, inconsistent cube\n"); + return zerocube(); + } +#endif + + return _compose(c1, c2); +} + +cube_t +transform(cube_t c, trans_t t) +{ +#ifdef DEBUG + if (!isconsistent(c)) { + fprintf(stderr, "transform error, inconsistent cube\n"); + return zerocube(); + } +#endif + + switch (t) { + case UFr: + return _trans_UFr(c); + case ULr: + return _trans_ULr(c); + case UBr: + return _trans_UBr(c); + case URr: + return _trans_URr(c); + case DFr: + return _trans_DFr(c); + case DLr: + return _trans_DLr(c); + case DBr: + return _trans_DBr(c); + case DRr: + return _trans_DRr(c); + case RUr: + return _trans_RUr(c); + case RFr: + return _trans_RFr(c); + case RDr: + return _trans_RDr(c); + case RBr: + return _trans_RBr(c); + case LUr: + return _trans_LUr(c); + case LFr: + return _trans_LFr(c); + case LDr: + return _trans_LDr(c); + case LBr: + return _trans_LBr(c); + case FUr: + return _trans_FUr(c); + case FRr: + return _trans_FRr(c); + case FDr: + return _trans_FDr(c); + case FLr: + return _trans_FLr(c); + case BUr: + return _trans_BUr(c); + case BRr: + return _trans_BRr(c); + case BDr: + return _trans_BDr(c); + case BLr: + return _trans_BLr(c); + case UFm: + return _trans_UFm(c); + case ULm: + return _trans_ULm(c); + case UBm: + return _trans_UBm(c); + case URm: + return _trans_URm(c); + case DFm: + return _trans_DFm(c); + case DLm: + return _trans_DLm(c); + case DBm: + return _trans_DBm(c); + case DRm: + return _trans_DRm(c); + case RUm: + return _trans_RUm(c); + case RFm: + return _trans_RFm(c); + case RDm: + return _trans_RDm(c); + case RBm: + return _trans_RBm(c); + case LUm: + return _trans_LUm(c); + case LFm: + return _trans_LFm(c); + case LDm: + return _trans_LDm(c); + case LBm: + return _trans_LBm(c); + case FUm: + return _trans_FUm(c); + case FRm: + return _trans_FRm(c); + case FDm: + return _trans_FDm(c); + case FLm: + return _trans_FLm(c); + case BUm: + return _trans_BUm(c); + case BRm: + return _trans_BRm(c); + case BDm: + return _trans_BDm(c); + case BLm: + return _trans_BLm(c); + default: +#ifdef DEBUG + fprintf(stderr, "transform error, unknown transformation\n"); +#endif + return zerocube(); + } +} -- cgit v1.3