--- /dev/null
+(* Simple offset test
+ * $Id: 50_named_pattern.ml 86 2008-06-13 15:56:04Z richard.wm.jones $
+ *)
+
+open Printf
+open Bitmatch
+
+let make_bits i n j m k = (
+ let pad1 = ones_bitstring (n-8) in
+ let pad2 = ones_bitstring (m-n-8) in
+ BITSTRING {
+ i : 8;
+ pad1 : n-8 : bitstring;
+ j : 8; (* this should be at offset(n) *)
+ pad2 : m-n-8 : bitstring;
+ k : 8 (* this should be at offset(m) *)
+ }
+)
+
+let test_bits bits i n j m k =
+ bitmatch bits with
+ | { i' : 8;
+ j' : 8 : offset(n);
+ k' : 8 : offset(m) } when i = i' && j = j' && k = k' -> () (* ok *)
+ | { _ } ->
+ failwith (sprintf "60_simple_offset: test_bits: failed %d %d %d %d %d"
+ i n j m k)
+
+let () =
+ for n = 8 to 128 do
+ for m = n+8 to 256 do
+ List.iter (fun (i,j,k) -> test_bits (make_bits i n j m k) i n j m k)
+ [0x55, 0xaa, 0x33; 0x33, 0xaa, 0x55; 0x12, 0x34, 0x56]
+ done;
+ done