1 files changed, 57 insertions, 0 deletions
diff --git a/test/mono/exint.sail b/test/mono/exint.sail
new file mode 100644
index 00000000..65589fb8
--- /dev/null
+++ b/test/mono/exint.sail
@@ -0,0 +1,57 @@
+$include <smt.sail>
+$include <flow.sail>
+default Order dec
+type bits ('n : Int) = vector('n, dec, bit)
+val operator & = "and_bool" : (bool, bool) -> bool
+val eq_vec = {ocaml: "eq_list", lem: "eq_vec"} : forall 'n. (bits('n), bits('n)) -> bool
+overload operator == = {eq_int, eq_vec}
+val mult_int = {ocaml: "mult", lem: "integerMult"} : (int, int) -> int
+overload operator * = {mult_range, mult_int, mult_real}
+val replicate_bits = "replicate_bits" : forall 'n 'm. (bits('n), atom('m)) -> bits('n * 'm)
+overload operator < = {lt_atom, lt_int}
+val "extz_vec" : forall 'n 'm. (atom('m),vector('n, dec, bit)) -> vector('m, dec, bit) effect pure
+val extzv : forall 'n 'm. vector('n, dec, bit) -> vector('m, dec, bit) effect pure
+function extzv(v) = extz_vec(sizeof('m),v)
+val bitvector_concat = {ocaml: "append", lem: "concat_vec", c: "append"} : forall ('n : Int) ('m : Int).
+  (bits('n), bits('m)) -> bits('n + 'm)
+overload append = {bitvector_concat}
+val bitvector_cast = "zeroExtend" : forall 'n. bits('n) -> bits('n) effect pure
+val bitvector_length = "length" : forall 'n. bits('n) -> atom('n)
+overload length = {bitvector_length}
+val cast ex_int : int -> {'n, true. atom('n)}
+function ex_int 'n = n
+
+
+/* Decode -> int -> existential test */
+
+val needssize : forall 'n, 'n >= 0. atom('n) -> unit effect pure
+
+function needssize(n) = {
+  let x : bits('n) = replicate_bits(0b0,n) in
+  ()
+}
+
+val test : bits(2) -> unit effect {undef,escape}
+
+function test(x) = {
+  n : int = undefined;
+  match x {
+    0b00 => n = 1,
+    0b01 => n = 2,
+    0b10 => n = 4,
+    0b11 => ()
+  };
+  let 'n2 = ex_int(n) in {
+    assert(constraint('n2 >= 0));
+    needssize(n2)
+  }
+}
+
+val run : unit -> unit effect {undef,escape}
+
+function run () = {
+  test(0b00);
+  test(0b01);
+  test(0b10);
+  test(0b11);
+}
+\ No newline at end of file