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This commit is contained in:
Nikolaj Bjorner 2021-07-03 15:44:25 -07:00
parent e19a7f71aa
commit c0e885931c
2 changed files with 147 additions and 24 deletions
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18
src/math/bigfix/u256.h
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@ -14,7 +14,11 @@ public:
u256 operator+(u256 const& other) const { u256 r = *this; return r += other; }
u256 operator-(u256 const& other) const { u256 r = *this; return r -= other; }
u256 operator-() const { u256 r = *this; return r.inv(); }
u256 operator<<(uint64_t sh) const;
u256 operator>>(uint64_t sh) const;
u256 operator&(u256 const& other) const;
u256 mod(u256 const& other) const;
u256 mul_inverse() const;
unsigned trailing_zeros() const;
u256 gcd(u256 const& other) const;
@ -27,17 +31,17 @@ public:
u256& inv(); /* unary minus */
// comparisons
bool operator==(u256 const& other) const;
bool operator!=(u256 const& other) const;
bool operator==(u256 const& other) const { return m_num[0] == other.m_num[0] && m_num[1] == other.m_num[1] && m_num[2] == other.m_num[2] && m_num[3] == other.m_num[3]; }
bool operator!=(u256 const& other) const { return !(*this == other); }
bool operator<(u256 const& other) const;
bool operator<=(u256 const& other) const;
bool operator>(u256 const& other) const;
bool operator>=(u256 const& other) const;
bool operator<=(u256 const& other) const { return !(other < *this); }
bool operator>(u256 const& other) const { return other < *this; }
bool operator>=(u256 const& other) const { return !(*this < other); }
bool operator<(uint64_t other) const;
bool operator<=(uint64_t other) const;
bool operator<=(uint64_t other) const { return !(*this > other); }
bool operator>(uint64_t other) const;
bool operator>=(uint64_t other) const;
bool operator>=(uint64_t other) const { return !(*this < other); }
bool is_zero() const { return m_num[0] == 0 && m_num[1] == 0 && m_num[2] == 0 && m_num[3] == 0; }
bool is_one() const { return m_num[0] == 1 && m_num[1] == 0 && m_num[2] == 0 && m_num[3] == 0; }