bslalg::HashUtil Struct Reference

#include <bslalg_hashutil.h>

Detailed Description

This struct provides a namespace for hash functions.

See bslalg_hashutil

Static Public Member Functions
static std::size_t	computeHash (char key)
static std::size_t	computeHash (signed char key)
static std::size_t	computeHash (unsigned char key)
static std::size_t	computeHash (short key)
static std::size_t	computeHash (unsigned short key)
static std::size_t	computeHash (int key)
static std::size_t	computeHash (unsigned int key)
static std::size_t	computeHash (long key)
static std::size_t	computeHash (unsigned long key)
static std::size_t	computeHash (long long key)
static std::size_t	computeHash (unsigned long long key)
static std::size_t	computeHash (float key)
static std::size_t	computeHash (double key)
static std::size_t	computeHash (const void *key)

Member Function Documentation

computeHash() [1/14]

static std::size_t bslalg::HashUtil::computeHash ( char  key )

static

Return a size_t hash value corresponding to the specified key.

Note

Note that the return value is seemingly random (i.e., the hash is good) but identical on all platforms (irrespective of endianness).

NOTE: We reserve the right to change these hash functions to return different values. The current implementation only returns a 32 bit value – when std::size_t is 64 bits, the high-order 32 bits of the return value are all zero. This is not a feature, it is a bug that we will fix in a later release.

computeHash() [2/14]

static std::size_t bslalg::HashUtil::computeHash ( const void *  key )

static

computeHash() [3/14]

static std::size_t bslalg::HashUtil::computeHash ( double  key )

static

computeHash() [4/14]

static std::size_t bslalg::HashUtil::computeHash ( float  key )

static

computeHash() [5/14]

static std::size_t bslalg::HashUtil::computeHash ( int  key )

static

computeHash() [6/14]

static std::size_t bslalg::HashUtil::computeHash ( long  key )

static

computeHash() [7/14]

static std::size_t bslalg::HashUtil::computeHash ( long long  key )

static

computeHash() [8/14]

static std::size_t bslalg::HashUtil::computeHash ( short  key )

static

computeHash() [9/14]

static std::size_t bslalg::HashUtil::computeHash ( signed char  key )

static

computeHash() [10/14]

static std::size_t bslalg::HashUtil::computeHash ( unsigned char  key )

static

computeHash() [11/14]

static std::size_t bslalg::HashUtil::computeHash ( unsigned int  key )

static

computeHash() [12/14]

static std::size_t bslalg::HashUtil::computeHash ( unsigned long  key )

static

computeHash() [13/14]

static std::size_t bslalg::HashUtil::computeHash ( unsigned long long  key )

static

computeHash() [14/14]

static std::size_t bslalg::HashUtil::computeHash ( unsigned short  key )

static

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

• bslalg_hashutil.h