1 files changed, 117 insertions, 0 deletions

diff --git a/src/solvers/twostep/twostep.h b/src/solvers/twostep/twostep.h
new file mode 100644
index 0000000..e5b00f6
--- /dev/null
+++ b/src/solvers/twostep/twostep.h
@@ -0,0 +1,117 @@
+#ifndef SRC_SOLVERS_TWOSTEP_TWOSTEP_H
+#define SRC_SOLVERS_TWOSTEP_TWOSTEP_H
+
+#include "../coord/coord.h"
+
+STATIC size_t twostep_size_1(void);
+STATIC size_t twostep_size_2(void);
+STATIC long long dataid_twostep(const char *, char [SIZE(NISSY_SIZE_DATAID)]);
+STATIC long long gendata_twostep(
+    const char *, unsigned long long, unsigned char *);
+STATIC long long checkdata_twostep(
+    const char *, unsigned long long, const unsigned char *);
+STATIC long long solve_twostep(oriented_cube_t, const char *, unsigned,
+    unsigned, unsigned, unsigned, unsigned, unsigned, unsigned long long,
+    const unsigned char *, unsigned, char *,
+    long long [SIZE(NISSY_SIZE_SOLVE_STATS)], int (*)(void *), void *);
+
+STATIC size_t
+twostep_size_1(void)
+{
+        size_t s;
+
+        s = gendata_coord(&coordinate_dr, NULL);
+        s = (size_t)8 * DIV_ROUND_UP(s, 8); /* Preserve 8-byte alignment */
+
+        return s;
+}
+
+STATIC size_t
+twostep_size_2(void)
+{
+        return gendata_multicoord(&multicoordinate_drfin, NULL);
+}
+
+STATIC long long
+dataid_twostep(const char *s, char dataid[SIZE(NISSY_SIZE_DATAID)])
+{
+        strcpy(dataid, "DR_DRFIN");
+        return NISSY_OK;
+}
+
+STATIC long long
+gendata_twostep(
+        const char *s,
+        unsigned long long bufsize,
+        unsigned char *buf
+)
+{
+        size_t r, s1, s2;
+
+        s1 = twostep_size_1();
+        s2 = twostep_size_2();
+
+        if (buf == NULL)
+                goto gendata_twostep_return_size;
+
+        if (bufsize < s1 + s2)
+                return NISSY_ERROR_BUFFER_SIZE;
+
+        r = gendata_coord(&coordinate_dr, buf);
+        if (r == 0)
+                return NISSY_ERROR_UNKNOWN;
+
+        r = gendata_multicoord(&multicoordinate_drfin, buf + s1);
+        if (r == 0)
+                return NISSY_ERROR_UNKNOWN;
+
+gendata_twostep_return_size:
+        return s1 + s2;
+}
+
+STATIC long long
+checkdata_twostep(
+        const char *s,
+        unsigned long long bufsize,
+        const unsigned char *buf
+)
+{
+        long long r;
+
+        LOG("[checkdata] Checking double table for two step solver\n");
+
+        r = checkdata_coord(&coordinate_dr, bufsize, buf);
+        if (r != NISSY_OK)
+                return r;
+
+        r = checkdata_multicoord(
+            &multicoordinate_drfin, bufsize, buf + twostep_size_1());
+        if (r != NISSY_OK)
+                return r;
+
+        return NISSY_OK;
+}
+
+STATIC long long
+solve_twostep(
+        oriented_cube_t oc,
+        const char *coord_and_trans,
+        unsigned nissflag,
+        unsigned minmoves,
+        unsigned maxmoves,
+        unsigned maxsolutions,
+        unsigned optimal,
+        unsigned threads,
+        unsigned long long data_size,
+        const unsigned char *data,
+        unsigned solutions_size,
+        char *sols,
+        long long stats[SIZE(NISSY_SIZE_SOLVE_STATS)],
+        int (*poll_status)(void *),
+        void *poll_status_data
+)
+{
+//TODO
+}
+
+#endif /* SRC_SOLVERS_TWOSTEP_TWOSTEP_H */