rust: add input module with 1 static function

rust/src/input.rs

@@ -0,0 +1,27 @@
+// functions already exported by bindgen : 0
+// -----------------------------------------
+//
+// static inline functions total: 1
+// ------------------------------------------ (done / remaining)
+// (+) done: 1 / 0
+// (#) test: 0 / 1
+// ------------------------------------------
+//+ ncinput_equal_p
+
+use crate as nc;
+use nc::types::Input;
+
+/// Compare two ncinput structs for data equality by doing a field-by-field
+/// comparison for equality (excepting seqnum).
+///
+/// Returns true if the two are data-equivalent.
+pub fn ncinput_equal_p(input1: Input, input2: Input) -> bool {
+    if n1.id != n2.id {
+        return false;
+    }
+    if n1.y != n2.y || n1.x != n2.x {
+        return false;
+    }
+    // do not check seqnum
+    true
+}