1 files changed, 43 insertions, 0 deletions
diff --git a/lib/Core/Differentiator.h b/lib/Core/Differentiator.h
new file mode 100644
index 00000000..54a12ac7
--- /dev/null
+++ b/lib/Core/Differentiator.h
@@ -0,0 +1,43 @@
+//===-- Differentiator.h ----------------------------------------*- C++ -*-===//
+//
+//                     The KLEE Symbolic Virtual Machine
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Class to perform actual execution, hides implementation details from external
+// interpreter.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef KLEE_DIFFERENTIATOR_H
+#define KLEE_DIFFERENTIATOR_H
+
+#include "llvm/Support/raw_ostream.h"
+
+#include <cstdint>
+#include <map>
+#include <string>
+
+namespace klee {
+
+/// Return if name matches arg\d\d
+bool isSymArg(std::string);
+
+/// Return if name matches out!.*\d
+bool isSymOut(std::string);
+
+struct Differentiator {
+  uint64_t revA, revB;
+  std::map<uint8_t, std::string> args;
+  std::map<std::string, std::pair<std::string, std::string>> outputs;
+  Differentiator(uint64_t a, uint64_t b) : revA{a}, revB{b} {}
+};
+
+/// Write convenient representation for debugging
+llvm::raw_ostream &operator<<(llvm::raw_ostream&, const Differentiator&);
+} // End klee namespace
+
+#endif /* KLEE_DIFFERENTIATOR_H */