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authorPieter Wuille <pieter.wuille@gmail.com>2014-04-19 23:02:47 +0200
committerPieter Wuille <pieter.wuille@gmail.com>2014-05-09 16:39:48 +0200
commiteb2cbd754d0ed02ab1c3f0889b6ee1776abd5082 (patch)
tree60c93a27d2e53cac43f8a5057b81425a8821bf94 /src/uint256.h
parente443ed2462b706650f51f08c8760dbf5047aa77f (diff)
Deduplicate shared code between uint160 and uint256
Diffstat (limited to 'src/uint256.h')
-rw-r--r--src/uint256.h306
1 files changed, 65 insertions, 241 deletions
diff --git a/src/uint256.h b/src/uint256.h
index ba903bc8fc..a3f7835875 100644
--- a/src/uint256.h
+++ b/src/uint256.h
@@ -1,5 +1,5 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2013 The Bitcoin developers
+// Copyright (c) 2009-2014 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -19,17 +19,56 @@ inline signed char HexDigit(char c)
return p_util_hexdigit[(unsigned char)c];
}
-/** Base class without constructors for uint256 and uint160.
- * This makes the compiler let you use it in a union.
- */
+/** Template base class for unsigned big integers. */
template<unsigned int BITS>
class base_uint
{
-protected:
+private:
enum { WIDTH=BITS/32 };
uint32_t pn[WIDTH];
public:
+ base_uint()
+ {
+ for (int i = 0; i < WIDTH; i++)
+ pn[i] = 0;
+ }
+
+ base_uint(const base_uint& b)
+ {
+ for (int i = 0; i < WIDTH; i++)
+ pn[i] = b.pn[i];
+ }
+
+ base_uint& operator=(const base_uint& b)
+ {
+ for (int i = 0; i < WIDTH; i++)
+ pn[i] = b.pn[i];
+ return *this;
+ }
+
+ base_uint(uint64_t b)
+ {
+ pn[0] = (unsigned int)b;
+ pn[1] = (unsigned int)(b >> 32);
+ for (int i = 2; i < WIDTH; i++)
+ pn[i] = 0;
+ }
+
+ explicit base_uint(const std::string& str)
+ {
+ SetHex(str);
+ }
+
+ explicit base_uint(const std::vector<unsigned char>& vch)
+ {
+ if (vch.size() == sizeof(pn)) {
+ memcpy(pn, &vch[0], sizeof(pn));
+ } else {
+ *this = 0;
+ }
+ }
+
bool operator!() const
{
for (int i = 0; i < WIDTH; i++)
@@ -292,7 +331,13 @@ public:
return (!(a == b));
}
-
+ friend inline const base_uint operator+(const base_uint& a, const base_uint& b) { return base_uint(a) += b; }
+ friend inline const base_uint operator-(const base_uint& a, const base_uint& b) { return base_uint(a) -= b; }
+ friend inline const base_uint operator|(const base_uint& a, const base_uint& b) { return base_uint(a) |= b; }
+ friend inline const base_uint operator&(const base_uint& a, const base_uint& b) { return base_uint(a) &= b; }
+ friend inline const base_uint operator^(const base_uint& a, const base_uint& b) { return base_uint(a) ^= b; }
+ friend inline const base_uint operator>>(const base_uint& a, int shift) { return base_uint(a) >>= shift; }
+ friend inline const base_uint operator<<(const base_uint& a, int shift) { return base_uint(a) <<= shift; }
std::string GetHex() const
{
@@ -373,263 +418,42 @@ public:
return pn[0] | (uint64_t)pn[1] << 32;
}
-// unsigned int GetSerializeSize(int nType=0, int nVersion=PROTOCOL_VERSION) const
unsigned int GetSerializeSize(int nType, int nVersion) const
{
return sizeof(pn);
}
template<typename Stream>
-// void Serialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION) const
void Serialize(Stream& s, int nType, int nVersion) const
{
s.write((char*)pn, sizeof(pn));
}
template<typename Stream>
-// void Unserialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION)
void Unserialize(Stream& s, int nType, int nVersion)
{
s.read((char*)pn, sizeof(pn));
}
-
-
- friend class uint160;
- friend class uint256;
};
-typedef base_uint<160> base_uint160;
-typedef base_uint<256> base_uint256;
-
-
-
-//
-// uint160 and uint256 could be implemented as templates, but to keep
-// compile errors and debugging cleaner, they're copy and pasted.
-//
-
-
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// uint160
-//
-
-/** 160-bit unsigned integer */
-class uint160 : public base_uint160
-{
+/** 160-bit unsigned big integer. */
+class uint160 : public base_uint<160> {
public:
- typedef base_uint160 basetype;
-
- uint160()
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint160(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- }
-
- uint160& operator=(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- return *this;
- }
-
- uint160(uint64_t b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint160& operator=(uint64_t b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- return *this;
- }
-
- explicit uint160(const std::string& str)
- {
- SetHex(str);
- }
-
- explicit uint160(const std::vector<unsigned char>& vch)
- {
- if (vch.size() == sizeof(pn))
- memcpy(pn, &vch[0], sizeof(pn));
- else
- *this = 0;
- }
+ uint160() {}
+ uint160(const base_uint<160>& b) : base_uint<160>(b) {}
+ uint160(uint64_t b) : base_uint<160>(b) {}
+ explicit uint160(const std::string& str) : base_uint<160>(str) {}
+ explicit uint160(const std::vector<unsigned char>& vch) : base_uint<160>(vch) {}
};
-inline bool operator==(const uint160& a, uint64_t b) { return (base_uint160)a == b; }
-inline bool operator!=(const uint160& a, uint64_t b) { return (base_uint160)a != b; }
-inline const uint160 operator<<(const base_uint160& a, unsigned int shift) { return uint160(a) <<= shift; }
-inline const uint160 operator>>(const base_uint160& a, unsigned int shift) { return uint160(a) >>= shift; }
-inline const uint160 operator<<(const uint160& a, unsigned int shift) { return uint160(a) <<= shift; }
-inline const uint160 operator>>(const uint160& a, unsigned int shift) { return uint160(a) >>= shift; }
-
-inline const uint160 operator^(const base_uint160& a, const base_uint160& b) { return uint160(a) ^= b; }
-inline const uint160 operator&(const base_uint160& a, const base_uint160& b) { return uint160(a) &= b; }
-inline const uint160 operator|(const base_uint160& a, const base_uint160& b) { return uint160(a) |= b; }
-inline const uint160 operator+(const base_uint160& a, const base_uint160& b) { return uint160(a) += b; }
-inline const uint160 operator-(const base_uint160& a, const base_uint160& b) { return uint160(a) -= b; }
-
-inline bool operator<(const base_uint160& a, const uint160& b) { return (base_uint160)a < (base_uint160)b; }
-inline bool operator<=(const base_uint160& a, const uint160& b) { return (base_uint160)a <= (base_uint160)b; }
-inline bool operator>(const base_uint160& a, const uint160& b) { return (base_uint160)a > (base_uint160)b; }
-inline bool operator>=(const base_uint160& a, const uint160& b) { return (base_uint160)a >= (base_uint160)b; }
-inline bool operator==(const base_uint160& a, const uint160& b) { return (base_uint160)a == (base_uint160)b; }
-inline bool operator!=(const base_uint160& a, const uint160& b) { return (base_uint160)a != (base_uint160)b; }
-inline const uint160 operator^(const base_uint160& a, const uint160& b) { return (base_uint160)a ^ (base_uint160)b; }
-inline const uint160 operator&(const base_uint160& a, const uint160& b) { return (base_uint160)a & (base_uint160)b; }
-inline const uint160 operator|(const base_uint160& a, const uint160& b) { return (base_uint160)a | (base_uint160)b; }
-inline const uint160 operator+(const base_uint160& a, const uint160& b) { return (base_uint160)a + (base_uint160)b; }
-inline const uint160 operator-(const base_uint160& a, const uint160& b) { return (base_uint160)a - (base_uint160)b; }
-
-inline bool operator<(const uint160& a, const base_uint160& b) { return (base_uint160)a < (base_uint160)b; }
-inline bool operator<=(const uint160& a, const base_uint160& b) { return (base_uint160)a <= (base_uint160)b; }
-inline bool operator>(const uint160& a, const base_uint160& b) { return (base_uint160)a > (base_uint160)b; }
-inline bool operator>=(const uint160& a, const base_uint160& b) { return (base_uint160)a >= (base_uint160)b; }
-inline bool operator==(const uint160& a, const base_uint160& b) { return (base_uint160)a == (base_uint160)b; }
-inline bool operator!=(const uint160& a, const base_uint160& b) { return (base_uint160)a != (base_uint160)b; }
-inline const uint160 operator^(const uint160& a, const base_uint160& b) { return (base_uint160)a ^ (base_uint160)b; }
-inline const uint160 operator&(const uint160& a, const base_uint160& b) { return (base_uint160)a & (base_uint160)b; }
-inline const uint160 operator|(const uint160& a, const base_uint160& b) { return (base_uint160)a | (base_uint160)b; }
-inline const uint160 operator+(const uint160& a, const base_uint160& b) { return (base_uint160)a + (base_uint160)b; }
-inline const uint160 operator-(const uint160& a, const base_uint160& b) { return (base_uint160)a - (base_uint160)b; }
-
-inline bool operator<(const uint160& a, const uint160& b) { return (base_uint160)a < (base_uint160)b; }
-inline bool operator<=(const uint160& a, const uint160& b) { return (base_uint160)a <= (base_uint160)b; }
-inline bool operator>(const uint160& a, const uint160& b) { return (base_uint160)a > (base_uint160)b; }
-inline bool operator>=(const uint160& a, const uint160& b) { return (base_uint160)a >= (base_uint160)b; }
-inline bool operator==(const uint160& a, const uint160& b) { return (base_uint160)a == (base_uint160)b; }
-inline bool operator!=(const uint160& a, const uint160& b) { return (base_uint160)a != (base_uint160)b; }
-inline const uint160 operator^(const uint160& a, const uint160& b) { return (base_uint160)a ^ (base_uint160)b; }
-inline const uint160 operator&(const uint160& a, const uint160& b) { return (base_uint160)a & (base_uint160)b; }
-inline const uint160 operator|(const uint160& a, const uint160& b) { return (base_uint160)a | (base_uint160)b; }
-inline const uint160 operator+(const uint160& a, const uint160& b) { return (base_uint160)a + (base_uint160)b; }
-inline const uint160 operator-(const uint160& a, const uint160& b) { return (base_uint160)a - (base_uint160)b; }
-
-
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// uint256
-//
-
-/** 256-bit unsigned integer */
-class uint256 : public base_uint256
-{
+/** 256-bit unsigned big integer. */
+class uint256 : public base_uint<256> {
public:
- typedef base_uint256 basetype;
-
- uint256()
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint256(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- }
-
- uint256& operator=(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- return *this;
- }
-
- uint256(uint64_t b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint256& operator=(uint64_t b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- return *this;
- }
-
- explicit uint256(const std::string& str)
- {
- SetHex(str);
- }
-
- explicit uint256(const std::vector<unsigned char>& vch)
- {
- if (vch.size() == sizeof(pn))
- memcpy(pn, &vch[0], sizeof(pn));
- else
- *this = 0;
- }
+ uint256() {}
+ uint256(const base_uint<256>& b) : base_uint<256>(b) {}
+ uint256(uint64_t b) : base_uint<256>(b) {}
+ explicit uint256(const std::string& str) : base_uint<256>(str) {}
+ explicit uint256(const std::vector<unsigned char>& vch) : base_uint<256>(vch) {}
};
-inline bool operator==(const uint256& a, uint64_t b) { return (base_uint256)a == b; }
-inline bool operator!=(const uint256& a, uint64_t b) { return (base_uint256)a != b; }
-inline const uint256 operator<<(const base_uint256& a, unsigned int shift) { return uint256(a) <<= shift; }
-inline const uint256 operator>>(const base_uint256& a, unsigned int shift) { return uint256(a) >>= shift; }
-inline const uint256 operator<<(const uint256& a, unsigned int shift) { return uint256(a) <<= shift; }
-inline const uint256 operator>>(const uint256& a, unsigned int shift) { return uint256(a) >>= shift; }
-
-inline const uint256 operator^(const base_uint256& a, const base_uint256& b) { return uint256(a) ^= b; }
-inline const uint256 operator&(const base_uint256& a, const base_uint256& b) { return uint256(a) &= b; }
-inline const uint256 operator|(const base_uint256& a, const base_uint256& b) { return uint256(a) |= b; }
-inline const uint256 operator+(const base_uint256& a, const base_uint256& b) { return uint256(a) += b; }
-inline const uint256 operator-(const base_uint256& a, const base_uint256& b) { return uint256(a) -= b; }
-
-inline bool operator<(const base_uint256& a, const uint256& b) { return (base_uint256)a < (base_uint256)b; }
-inline bool operator<=(const base_uint256& a, const uint256& b) { return (base_uint256)a <= (base_uint256)b; }
-inline bool operator>(const base_uint256& a, const uint256& b) { return (base_uint256)a > (base_uint256)b; }
-inline bool operator>=(const base_uint256& a, const uint256& b) { return (base_uint256)a >= (base_uint256)b; }
-inline bool operator==(const base_uint256& a, const uint256& b) { return (base_uint256)a == (base_uint256)b; }
-inline bool operator!=(const base_uint256& a, const uint256& b) { return (base_uint256)a != (base_uint256)b; }
-inline const uint256 operator^(const base_uint256& a, const uint256& b) { return (base_uint256)a ^ (base_uint256)b; }
-inline const uint256 operator&(const base_uint256& a, const uint256& b) { return (base_uint256)a & (base_uint256)b; }
-inline const uint256 operator|(const base_uint256& a, const uint256& b) { return (base_uint256)a | (base_uint256)b; }
-inline const uint256 operator+(const base_uint256& a, const uint256& b) { return (base_uint256)a + (base_uint256)b; }
-inline const uint256 operator-(const base_uint256& a, const uint256& b) { return (base_uint256)a - (base_uint256)b; }
-
-inline bool operator<(const uint256& a, const base_uint256& b) { return (base_uint256)a < (base_uint256)b; }
-inline bool operator<=(const uint256& a, const base_uint256& b) { return (base_uint256)a <= (base_uint256)b; }
-inline bool operator>(const uint256& a, const base_uint256& b) { return (base_uint256)a > (base_uint256)b; }
-inline bool operator>=(const uint256& a, const base_uint256& b) { return (base_uint256)a >= (base_uint256)b; }
-inline bool operator==(const uint256& a, const base_uint256& b) { return (base_uint256)a == (base_uint256)b; }
-inline bool operator!=(const uint256& a, const base_uint256& b) { return (base_uint256)a != (base_uint256)b; }
-inline const uint256 operator^(const uint256& a, const base_uint256& b) { return (base_uint256)a ^ (base_uint256)b; }
-inline const uint256 operator&(const uint256& a, const base_uint256& b) { return (base_uint256)a & (base_uint256)b; }
-inline const uint256 operator|(const uint256& a, const base_uint256& b) { return (base_uint256)a | (base_uint256)b; }
-inline const uint256 operator+(const uint256& a, const base_uint256& b) { return (base_uint256)a + (base_uint256)b; }
-inline const uint256 operator-(const uint256& a, const base_uint256& b) { return (base_uint256)a - (base_uint256)b; }
-
-inline bool operator<(const uint256& a, const uint256& b) { return (base_uint256)a < (base_uint256)b; }
-inline bool operator<=(const uint256& a, const uint256& b) { return (base_uint256)a <= (base_uint256)b; }
-inline bool operator>(const uint256& a, const uint256& b) { return (base_uint256)a > (base_uint256)b; }
-inline bool operator>=(const uint256& a, const uint256& b) { return (base_uint256)a >= (base_uint256)b; }
-inline bool operator==(const uint256& a, const uint256& b) { return (base_uint256)a == (base_uint256)b; }
-inline bool operator!=(const uint256& a, const uint256& b) { return (base_uint256)a != (base_uint256)b; }
-inline const uint256 operator^(const uint256& a, const uint256& b) { return (base_uint256)a ^ (base_uint256)b; }
-inline const uint256 operator&(const uint256& a, const uint256& b) { return (base_uint256)a & (base_uint256)b; }
-inline const uint256 operator|(const uint256& a, const uint256& b) { return (base_uint256)a | (base_uint256)b; }
-inline const uint256 operator+(const uint256& a, const uint256& b) { return (base_uint256)a + (base_uint256)b; }
-inline const uint256 operator-(const uint256& a, const uint256& b) { return (base_uint256)a - (base_uint256)b; }
-
#endif