X-Git-Url: https://mattmccutchen.net/bigint/bigint.git/blobdiff_plain/0551c03b5862aafe7f5f88cf282ebf96621c6c80..5ff40cf5d6e822051da902b041ae7ae8f545123e:/BigUnsignedInABase.hh diff --git a/BigUnsignedInABase.hh b/BigUnsignedInABase.hh index 4096907..3712907 100644 --- a/BigUnsignedInABase.hh +++ b/BigUnsignedInABase.hh @@ -37,48 +37,48 @@ */ class BigUnsignedInABase : protected NumberlikeArray { - + // TYPES public: typedef unsigned short Digit; // The digit type that BigUnsignedInABases are built from typedef Digit Base; - + // FIELDS protected: Base base; // The base of this BigUnsignedInABase - + // MANAGEMENT protected: // These members generally defer to those in NumberlikeArray, possibly with slight changes. // It might be nice if one could request that constructors be inherited in C++. - + BigUnsignedInABase(int, Index c) : NumberlikeArray(0, c) {} // Creates a BigUnsignedInABase with a capacity - + void zapLeadingZeros() { // Decreases len to eliminate leading zeros while (len > 0 && blk[len - 1] == 0) len--; } - + //void allocate(Index c); // (NlA) Ensures the number array has at least the indicated capacity, maybe discarding contents //void allocateAndCopy(Index c); // (NlA) Ensures the number array has at least the indicated capacity, preserving its contents - + public: BigUnsignedInABase() : NumberlikeArray(), base(2) {} // Default constructor (value is 0 in base 2) BigUnsignedInABase(const BigUnsignedInABase &x) : NumberlikeArray(x), base(x.base) {} // Copy constructor - + void operator =(const BigUnsignedInABase &x) { // Assignment operator NumberlikeArray::operator =(x); base = x.base; } - + BigUnsignedInABase(const Digit *d, Index l) : NumberlikeArray(d, l) { // Constructor from an array of digits zapLeadingZeros(); } - + // LINKS TO BIGUNSIGNED BigUnsignedInABase(const BigUnsigned &x, Base base); operator BigUnsigned() const; - + /* LINKS TO STRINGS * * These use the symbols ``0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'' to represent @@ -97,7 +97,7 @@ class BigUnsignedInABase : protected NumberlikeArray { */ operator std::string() const; BigUnsignedInABase(const std::string &s, Base base); - + // PICKING APART // These accessors can be used to get the pieces of the number public: @@ -109,7 +109,7 @@ class BigUnsignedInABase : protected NumberlikeArray { Digit getDigit(Index i) const { return i >= len ? 0 : blk[i]; } // Note how we replace one level of abstraction with another. bool isZero() const { return NumberlikeArray::isEmpty(); } // Often convenient for loops - + // EQUALITY TEST public: // Equality test @@ -117,7 +117,7 @@ class BigUnsignedInABase : protected NumberlikeArray { return base == x.base && NumberlikeArray::operator ==(x); } bool operator !=(const BigUnsignedInABase &x) const { return !operator ==(x); } - + }; #endif