5 files changed, 104 insertions, 1 deletions

diff --git a/src/nissy.c b/src/nissy.c
index 318cff1..27e2835 100644
--- a/src/nissy.c
+++ b/src/nissy.c
@@ -13,6 +13,9 @@
 
 int parse_h48_options(const char *, uint8_t *, uint8_t *, uint8_t *);
 STATIC int64_t write_result(cube_t, char [static 22]);
+STATIC bool distribution_equal(
+    const uint64_t [static 21], const uint64_t [static 21], uint8_t);
+STATIC bool checkdata(const void *, const tableinfo_t *);
 
 /* TODO: add option to get DR, maybe C-only, E-only, eo... */
 #define GETCUBE_OPTIONS(S, F) { .option = S, .fix = F }
@@ -62,6 +65,49 @@ parse_h48_options_error:
         return -1;
 }
 
+STATIC bool
+checkdata(const void *buf, const tableinfo_t *info)
+{
+        uint64_t distr[21];
+
+        if (!strncmp(info->solver, "cocsep", 6)) {
+                getdistribution_cocsep(
+                    (uint32_t *)((char *)buf + INFOSIZE), distr);
+        } else if (!strncmp(info->solver, "h48", 3)) {
+                getdistribution_h48((uint8_t *)buf + INFOSIZE, distr,
+                    info->h48h, info->bits);
+        } else {
+                LOG("checkdata: unknown solver %s\n", info->solver);
+                return false;
+        }
+
+        return distribution_equal(info->distribution, distr, info->maxvalue);
+}
+
+STATIC bool
+distribution_equal(
+        const uint64_t expected[static 21],
+        const uint64_t actual[static 21],
+        uint8_t maxvalue
+)
+{
+        int wrong;
+        uint8_t i;
+
+        for (i = 0, wrong = 0; i <= MAX(maxvalue, 20); i++) {
+                if (expected[i] != actual[i]) {
+                        wrong++;
+                        LOG("Value %" PRIu8 ": expected %" PRIu64 ", found %"
+                            PRIu64 "\n", i, expected[i], actual[i]);
+                }
+        }
+
+        if (wrong > 0)
+                LOG("chekdata: %d wrong values\n", wrong);
+
+        return wrong > 0;
+}
+
 STATIC int64_t
 write_result(cube_t cube, char result[static 22])
 {
@@ -275,6 +321,23 @@ nissy_gendata(
 }
 
 int64_t
+nissy_checkdata(
+        const char *solver,
+        const char *options,
+        const void *data
+)
+{
+        char *buf;
+        tableinfo_t info;
+
+        for (buf = (char *)data; readtableinfo(buf, &info); buf += info.next)
+                if (!checkdata(buf, &info))
+                        return 1;
+
+        return 0;
+}
+
+int64_t
 nissy_solve(
         const char cube[static 22],
         const char *solver, 
diff --git a/src/nissy.h b/src/nissy.h
index 336130c..e8c35c3 100644
--- a/src/nissy.h
+++ b/src/nissy.h
@@ -86,6 +86,12 @@ int64_t nissy_gendata(
         void *generated_data
 );
 
+int64_t nissy_checkdata(
+        const char *solver,
+        const char *options,
+        const void *data
+);
+
 /* Print information on a data table via the provided callback writer */
 int64_t nissy_datainfo(
         const void *table,
diff --git a/src/solvers/h48/gendata_cocsep.h b/src/solvers/h48/gendata_cocsep.h
index 2189145..262793b 100644
--- a/src/solvers/h48/gendata_cocsep.h
+++ b/src/solvers/h48/gendata_cocsep.h
@@ -25,6 +25,7 @@ STATIC_INLINE void set_visited(uint8_t *, int64_t);
 
 STATIC size_t gendata_cocsep(void *, uint64_t *, cube_t *);
 STATIC uint32_t gendata_cocsep_dfs(cocsep_dfs_arg_t *);
+STATIC void getdistribution_cocsep(const uint32_t *, uint64_t [static 21]);
 
 STATIC_INLINE int8_t get_h48_cdata(cube_t, uint32_t *, uint32_t *);
 
@@ -157,6 +158,17 @@ gendata_cocsep_dfs(cocsep_dfs_arg_t *arg)
         return cc;
 }
 
+STATIC void
+getdistribution_cocsep(const uint32_t *table, uint64_t distr[static 21])
+{
+        size_t i;
+
+        memset(distr, 0, 21 * sizeof(uint64_t));
+
+        for (i = 0; i < COCSEP_TABLESIZE; i++)
+                distr[CBOUND(table[i])]++;
+}
+
 STATIC_INLINE bool
 get_visited(const uint8_t *a, int64_t i)
 {
diff --git a/src/solvers/h48/gendata_h48.h b/src/solvers/h48/gendata_h48.h
index 3445570..6e7b0ca 100644
--- a/src/solvers/h48/gendata_h48.h
+++ b/src/solvers/h48/gendata_h48.h
@@ -104,13 +104,16 @@ STATIC size_t gendata_h48k2_realcoord(gendata_h48_arg_t *);
 STATIC void gendata_h48k2_dfs(h48k2_dfs_arg_t *arg);
 STATIC void * gendata_h48k2_runthread(void *);
 STATIC tableinfo_t makeinfo_h48k2(gendata_h48_arg_t *, uint8_t);
+STATIC void getdistribution_h48(
+    const uint8_t *, uint64_t [static 21], uint8_t, uint8_t);
 
 STATIC uint32_t *get_cocsepdata_ptr(const void *);
 STATIC uint8_t *get_h48data_ptr(const void *);
 
 STATIC_INLINE uint8_t get_h48_pval(const uint8_t *, int64_t, uint8_t);
 STATIC_INLINE void set_h48_pval(uint8_t *, int64_t, uint8_t, uint8_t);
-STATIC_INLINE uint8_t get_h48_bound(cube_t, uint32_t, uint8_t, uint8_t, uint8_t *);
+STATIC_INLINE uint8_t get_h48_bound(
+    cube_t, uint32_t, uint8_t, uint8_t, uint8_t *);
 
 STATIC uint64_t
 gendata_h48short(gendata_h48short_arg_t *arg)
@@ -662,6 +665,25 @@ makeinfo_h48k2(gendata_h48_arg_t *arg, uint8_t base)
         return info;
 }
 
+STATIC void
+getdistribution_h48(
+        const uint8_t *table,
+        uint64_t distr[static 21],
+        uint8_t h,
+        uint8_t k
+) {
+        uint8_t val;
+        int64_t i, h48max;
+
+        memset(distr, 0, 21 * sizeof(uint64_t));
+
+        h48max = H48_COORDMAX(h);
+        for (i = 0; i < h48max; i++) {
+                val = get_h48_pval(table, i, k);
+                distr[val]++;
+        }
+}
+
 STATIC uint32_t *
 get_cocsepdata_ptr(const void *data)
 {
diff --git a/tools/100_gendata/gendata.c b/tools/000_gendata/gendata.c
index 78f81ab..78f81ab 100644
--- a/tools/100_gendata/gendata.c
+++ b/tools/000_gendata/gendata.c