Make MurmurHash3 consume Spans

Author: sipa

src/hash.cpp

@@ -12,7 +12,7 @@ inline uint32_t ROTL32(uint32_t x, int8_t r)
     return (x << r) | (x >> (32 - r));
 }
 
-unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char>& vDataToHash)
+unsigned int MurmurHash3(unsigned int nHashSeed, Span<const unsigned char> vDataToHash)
 {
     // The following is MurmurHash3 (x86_32), see http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp
     uint32_t h1 = nHashSeed;

src/hash.h

@@ -200,7 +200,7 @@ uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL
     return ss.GetHash();
 }
 
-unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char>& vDataToHash);
+unsigned int MurmurHash3(unsigned int nHashSeed, Span<const unsigned char> vDataToHash);
 
 void BIP32Hash(const ChainCode &chainCode, unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64]);