Progress

1 files changed, 14 insertions, 3 deletions

diff --git a/bigint.h b/bigint.h
index 6579054..213bf5c 100644
--- a/bigint.h
+++ b/bigint.h
@@ -39,6 +39,9 @@ public:
 	Bigint& operator+=(const Bigint&);
 	Bigint& operator-=(const Bigint&);
 	Bigint& operator*=(const Bigint&);
+	Bigint& operator+=(slongdigit_t);
+	Bigint& operator-=(slongdigit_t);
+	Bigint& operator*=(slongdigit_t);
 	Bigint& operator<<=(int);
 	Bigint& operator>>=(int);
 	Bigint& negate();
@@ -46,9 +49,12 @@ public:
 	Bigint operator+(const Bigint&) const;
 	Bigint operator-(const Bigint&) const;
 	Bigint operator*(const Bigint&) const;
+	Bigint operator+(slongdigit_t) const;
+	Bigint operator-(slongdigit_t) const;
+	Bigint operator*(slongdigit_t) const;
 	Bigint operator<<(int) const;
 	Bigint operator>>(int) const;
-	std::pair<Bigint,Bigint> divmod(const Bigint&) const;
+	std::pair<Bigint,Bigint> divmod(const Bigint&) const; //rounds towards zero; returns {quotient,remainder}
 
 	bool operator==(const Bigint&) const;
 	bool operator!=(const Bigint&) const;
@@ -70,6 +76,8 @@ public:
 
 	int bitcount() const;
 	slongdigit_t lowdigits() const;
+	bool even() const;
+	bool odd() const;
 
 	std::vector<char> serialise() const;
 	void deserialise(const std::vector<char>&);
@@ -79,9 +87,12 @@ public:
 	friend std::ostream& operator<<(std::ostream&,Bigint);
 
 	digit_t _digit(int idx) const;
-};
 
-Bigint pow(const Bigint &b,const Bigint &ex);
+
+	static Bigint zero;
+	static Bigint one;
+	static Bigint mone;
+};
 
 std::istream& operator>>(std::istream&,Bigint&);
 std::ostream& operator<<(std::ostream&,Bigint);