Update again

Author: eecheng87

src/cfront.c

@@ -1365,7 +1365,7 @@ int read_numeric_sconstant()
 int eval_expression_imm(opcode_t op, int op1, int op2)
 {
     /* return immediate result */
-    int is_odd = 1;
+    int tmp = op2;
     int res = 0;
     switch (op) {
     case OP_add:
@@ -1381,11 +1381,12 @@ int eval_expression_imm(opcode_t op, int op1, int op2)
         res = op1 / op2;
         break;
     case OP_mod:
-    /* TODO: provide arithmetic & operation instead of '&=' */
-        is_odd &= op2;
-        if (is_odd == 0)
-            res = op1 & (op2 - 1);
-        else
+        /* TODO: provide arithmetic & operation instead of '&=' */
+        tmp &= (tmp - 1);
+        if ((op2 != 0) && (tmp == 0)) {
+            res = op1;
+            res &= (op2 - 1);
+        } else
             res = op1 % op2;
         break;
     case OP_lshift: