Integer/Number and uint(8,16,32,64bit) fun... ;)

src/vm/uclamp.c

@@ -0,0 +1,24 @@
+case OP_UCLAMP: {
+    /* Clamp/wrap the integer on top of the stack to 'bits' width (unsigned) */
+    Value v = pop_value(vm);
+    int bits = inst.operand;
+    uint64_t u = 0;
+
+    if (v.type == VAL_INT) {
+        u = (uint64_t) v.i;
+    } else {
+        /* Non-integers clamp to 0 */
+        u = 0;
+    }
+
+    if (bits > 0 && bits < 64) {
+        uint64_t mask = (1ULL << bits) - 1ULL;
+        u &= mask;
+    } else {
+        /* bits >= 64 -> no-op; bits <= 0 -> no-op */
+    }
+
+    push_value(vm, make_int((int64_t)u));
+    free_value(v);
+    break;
+}