fix bitvector rotation for arg > width

Author: Froleyks

VERSION

@@ -1 +1 @@
-1.0.1
+1.0.2

src/btorsim/btorsimbv.c

@@ -1756,9 +1756,10 @@ btorsim_bv_sra (const BtorSimBitVector *a, const BtorSimBitVector *b)
 BtorSimBitVector *
 btorsim_bv_rol (const BtorSimBitVector *a, const BtorSimBitVector *b) {
   BtorSimBitVector *width = btorsim_bv_uint64_to_bv(a->width, a->width);
-  BtorSimBitVector *rev = btorsim_bv_sub(width, b);
+  BtorSimBitVector *rem = btorsim_bv_urem(b, width);
+  BtorSimBitVector *rev = btorsim_bv_sub(width, rem);
 
-  BtorSimBitVector *sll_part = btorsim_bv_sll(a, b);
+  BtorSimBitVector *sll_part = btorsim_bv_sll(a, rem);
   BtorSimBitVector *srl_part = btorsim_bv_srl(a, rev);
   BtorSimBitVector *res = btorsim_bv_or(sll_part, srl_part);
 
@@ -1772,9 +1773,10 @@ btorsim_bv_rol (const BtorSimBitVector *a, const BtorSimBitVector *b) {
 BtorSimBitVector *
 btorsim_bv_ror (const BtorSimBitVector *a, const BtorSimBitVector *b) {
   BtorSimBitVector *width = btorsim_bv_uint64_to_bv(a->width, a->width);
-  BtorSimBitVector *rev = btorsim_bv_sub(width, b);
+  BtorSimBitVector *rem = btorsim_bv_urem(b, width);
+  BtorSimBitVector *rev = btorsim_bv_sub(width, rem);
 
-  BtorSimBitVector *srl_part = btorsim_bv_srl(a, b);
+  BtorSimBitVector *srl_part = btorsim_bv_srl(a, rem);
   BtorSimBitVector *sll_part = btorsim_bv_sll(a, rev);
   BtorSimBitVector *res = btorsim_bv_or(srl_part, sll_part);