Test comparison operator result integer bounds

Author: sim642

tests/regression/01-cpa/28-interval.c

@@ -49,6 +49,11 @@ int main () {
   __goblint_check(!(a>9));
   __goblint_check(b==8); //UNKNOWN
 
+  __goblint_check((a < 10) == 1);
+  __goblint_check((a > 9) == 0);
+  __goblint_check((a == b) >= 0);
+  __goblint_check((a == b) <= 1);
+
   for(x = 0; x < 10; x++){
     __goblint_check(x >= 0);
     __goblint_check(x <= 9);

tests/regression/57-floats/01-base.c

@@ -1,4 +1,4 @@
-// PARAM: --enable ana.float.interval
+// PARAM: --enable ana.float.interval --enable ana.int.interval
 #include <goblint.h>
 #include <float.h>
 #include <limits.h>
@@ -23,6 +23,11 @@ int main()
     __goblint_check(a < 10.); // SUCCESS
     __goblint_check(a > 10.); // FAIL
 
+    __goblint_check((a < 10.) == 1);
+    __goblint_check((a > 10.) == 0);
+    __goblint_check((x == 2.) >= 0); // TODO
+    __goblint_check((x == 2.) <= 1); // TODO
+
     __goblint_check(c == 2.f); // SUCCESS
     __goblint_check(c < 10.f); // SUCCESS
     __goblint_check(c > 10.f); // FAIL