1 files changed, 2 insertions, 0 deletions
diff --git a/bignum.h b/bignum.h
index 1519c87..185d118 100644
--- a/bignum.h
+++ b/bignum.h
@@ -41,6 +41,8 @@
 /* max value for a ulong */
 #define BIG_MAX_ULONG { 0x44, 0x42, 0x94, 0x96, 0x72, 0x95 }
 
+extern void __fastcall__ big_copy(bignump dest, bignump src);
+
 // void int_to_big(int i, bignum *b);
 // void uint_to_big(unsigned int i, bignum *b);