1 files changed, 6 insertions, 1 deletions
diff --git a/includes/BigInt.h b/includes/BigInt.h
index 55a5c75..a94396c 100644
--- a/includes/BigInt.h
+++ b/includes/BigInt.h
@@ -56,7 +56,8 @@ class BigInt {
     comp_t comp(const BigInt &) const throw (GeneralException);
     comp_t comp(unsigned int) const throw (GeneralException);
 
-    BigInt & neg() throw (GeneralException);
+    BigInt neg() const throw (GeneralException);
+    BigInt & do_neg() throw (GeneralException);
 
     BigInt sqrt() const throw (GeneralException);
     BigInt & do_sqrt() throw (GeneralException);
@@ -93,6 +94,10 @@ class BigInt {
 
     bool isPrime() const throw (GeneralException);
 
+    size_t exportSize() const;
+    void exportBin(void *) const throw (GeneralException);
+    void importBin(const void *, size_t) throw (GeneralException);
+
     String toString(int radix = 10) const;
     char * makeString(int radix = 10) const;