cHasher Class Reference

Description

Utility class to calculate the hash of some data.

We are trying to achieve that the same calls gives the same hash on a 32-bit machine and on a 64-bit machine. Longs can be either 32-bit or 64-bit, so we always convert them to 64 bits. We do not try to convert endianness, it would be too costly.

Inheritance diagram for cHasher:

Public Member Functions
	cHasher ()
Updating the hash
void	reset ()
void	add (char d)
void	add (short d)
void	add (int d)
void	add (long d)
void	add (long long d)
void	add (unsigned char d)
void	add (unsigned short d)
void	add (unsigned int d)
void	add (unsigned long d)
void	add (unsigned long long d)
void	add (double d)
void	add (simtime_t t)
void	add (const char *s)
void	add (const std::string &s)
void	add (const void *p, size_t length)
template<typename T >
cHasher &	operator<< (const T &x)
Obtaining the result
uint32_t	getHash () const
uint32_t	parse (const char *hash) const
bool	equals (const char *hash) const
std::string	str () const

Constructor & Destructor Documentation

cHasher()

cHasher ( )

inline

Constructor.

Member Function Documentation

getHash()

uint32_t getHash ( ) const

inline

Returns the hash value.

parse()

uint32_t parse

(

const char *

hash

)

const

Converts the given string to a numeric hash value. The object is not changed. Throws an error if the string does not contain a valid hash.

equals()

bool equals

(

const char *

hash

)

const

Parses the given hash string, and compares it to the stored hash.

str()

std::string str

(

)

const

Returns the textual representation (hex string) of the stored hash.

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The documentation for this class was generated from the following file:

• chasher.h