1 files changed, 8 insertions, 6 deletions

diff --git a/src/solvers/coord/dr.h b/src/solvers/coord/dr.h
index 5f3a99b..a312285 100644
--- a/src/solvers/coord/dr.h
+++ b/src/solvers/coord/dr.h
@@ -102,18 +102,21 @@ STATIC bool
 coordinate_dr_isnasty(uint64_t coord, const void *data)
 {
         const char *datanoinfo;
-        const uint32_t *classttrep;
+        const uint32_t *classttrep, *rep32;
+        uint32_t r;
 
         datanoinfo = (const char *)data + INFOSIZE;
         classttrep = (const uint32_t *)datanoinfo;
+        rep32 = (const uint32_t *)(datanoinfo + DR_CLASS_TABLESIZE);
+        r = rep32[coord / POW_3_7];
 
-        return DR_ISNASTY(classttrep[coord]);
+        return DR_ISNASTY(classttrep[r]);
 }
 
 STATIC size_t
 coordinate_dr_gendata(void *data)
 {
-        uint64_t i, ii, j, n, t, nasty;
+        uint64_t i, j, n, t, nasty;
         char *datanoinfo;
         uint32_t *classttrep, *rep;
         cube_t c;
@@ -146,12 +149,11 @@ coordinate_dr_gendata(void *data)
                         continue;
 
                 c = invcoord_dreoesep_nosym(i);
-                ii = coord_dreoesep_nosym(c);
-                for (t = 0, nasty = 0; t < NTRANS && !nasty; t++) {
+                for (t = 1, nasty = 0; t < NTRANS && !nasty; t++) {
                         if (!((UINT64_C(1) << t) & coordinate_dr.trans_mask))
                                 continue;
 
-                        nasty = ii == coord_dreoesep_nosym(transform(c, t));
+                        nasty = i == coord_dreoesep_nosym(transform(c, t));
                 }
 
                 for (t = 0; t < NTRANS; t++) {