PPCoin: Separate newmint value from stake in RPC 'getinfo' output

[novacoin.git] / src / bignum.h

diff --git a/src/bignum.h b/src/bignum.h
index 5b4c78e..5c08c58 100644 (file)
--- a/src/bignum.h
+++ b/src/bignum.h
@@ -1,4 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2011 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 #ifndef BITCOIN_BIGNUM_H
@@ -181,6 +182,21 @@ public:
         BN_mpi2bn(pch, p - pch, this);
     }
 
+    uint64 getuint64()
+    {
+        unsigned int nSize = BN_bn2mpi(this, NULL);
+        if (nSize < 4)
+            return 0;
+        std::vector<unsigned char> vch(nSize);
+        BN_bn2mpi(this, &vch[0]);
+        if (vch.size() > 4)
+            vch[4] &= 0x7f;
+        uint64 n = 0;
+        for (int i = 0, j = vch.size()-1; i < sizeof(n) && j >= 4; i++, j--)
+            ((unsigned char*)&n)[i] = vch[j];
+        return n;
+    }
+
     void setuint256(uint256 n)
     {
         unsigned char pch[sizeof(n) + 6];
@@ -228,10 +244,13 @@ public:
     {
         std::vector<unsigned char> vch2(vch.size() + 4);
         unsigned int nSize = vch.size();
+        // BIGNUM's byte stream format expects 4 bytes of
+        // big endian size data info at the front
         vch2[0] = (nSize >> 24) & 0xff;
         vch2[1] = (nSize >> 16) & 0xff;
         vch2[2] = (nSize >> 8) & 0xff;
         vch2[3] = (nSize >> 0) & 0xff;
+        // swap data to big endian
         reverse_copy(vch.begin(), vch.end(), vch2.begin() + 4);
         BN_mpi2bn(&vch2[0], vch2.size(), this);
     }