string_utils.inl File Reference

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Functions
template<class value_t >
constexpr size_t	qx::djb2a_hash (const value_t *pszStr, size_t nSeed, size_t nLen)
	djb2a hash More...
template<class value_t >
constexpr size_t	qx::djb2a_hash (const value_t *pszStr, size_t nSeed=0)
	djb2a hash More...
template<class value_t >
constexpr size_t	qx::murmur_32_hash (const value_t *pStr, size_t nSeed, size_t nLen) noexcept
	Murmur nHash. More...
template<class fwd_it_1_t , class fwd_it_2_t >
constexpr int	qx::iter_strcmp (fwd_it_1_t itBegin1, fwd_it_1_t itEnd1, fwd_it_2_t itBegin2, fwd_it_2_t itEnd2) noexcept
	Compares string 1 with string 2. More...
template<class value_t >
constexpr int	qx::strcmp (const value_t *pszLeft, const value_t *pszRight)
	Constexpr compare two strings. More...
template<class value_t , class T >
constexpr const value_t *	qx::get_format_specifier () noexcept
	Get format specifier for type. More...
template<class value_t >
constexpr std::size_t	qx::strlen (const value_t *psz)
	Naive but constexpr string length algorithm, for runtime prefer std::strlen as there are may be a lot of optimizations. More...

Detailed Description

Author

Khrapov

Date

14.10.2026

Copyright

(c) Nick Khrapov, 2026. All right reserved.

Definition in file string_utils.inl.

Function Documentation

djb2a_hash() [1/2]

template<class value_t >

constexpr size_t qx::djb2a_hash ( const value_t *  pszStr, size_t  nSeed, size_t  nLen  )

constexpr

djb2a hash

Template Parameters

value_t

- char type

Parameters

pszStr	- string for hashing
nSeed	- seed for hashing
nLen	- string length

Return values

-	32bit unsigned value

Definition at line 14 of file string_utils.inl.

djb2a_hash() [2/2]

template<class value_t >

constexpr size_t qx::djb2a_hash ( const value_t *  pszStr, size_t  nSeed = 0  )

constexpr

djb2a hash

Template Parameters

value_t

- char type

Parameters

pszStr	- string for hashing (zero terminated)
nSeed	- seed for hashing

Return values

-	32bit unsigned value

Definition at line 25 of file string_utils.inl.

get_format_specifier()

template<class value_t , class T >

constexpr const value_t * qx::get_format_specifier ( )

constexprnoexcept

Get format specifier for type.

Template Parameters

value_t	- char type
T	- target type

Return values

-	format specifier or nullptr

Definition at line 171 of file string_utils.inl.

iter_strcmp()

template<class fwd_it_1_t , class fwd_it_2_t >

constexpr int qx::iter_strcmp ( fwd_it_1_t  itBegin1, fwd_it_1_t  itEnd1, fwd_it_2_t  itBegin2, fwd_it_2_t  itEnd2  )

constexprnoexcept

Compares string 1 with string 2.

Template Parameters

fwd_it_1_t	- string 1 iterator type
fwd_it_2_t	- string 2 iterator type

Parameters

itBegin1	- string 1 begin iterator
itEnd1	- string 1 end iterator
itBegin2	- string 2 begin iterator
itEnd2	- string 2 end iterator

Return values

-	< 0 the first character that does not match has a lower value in str 1 than in str 2 0 the contents of both strings are equal > 0 the first character that does not match has a greater value in str 1 than in str 2

Definition at line 110 of file string_utils.inl.

murmur_32_hash()

template<class value_t >

constexpr size_t qx::murmur_32_hash ( const value_t *  pStr, size_t  nSeed, size_t  nLen  )

constexprnoexcept

Murmur nHash.

https://en.wikipedia.org/wiki/MurmurHash https://softwareengineering.stackexchange.com/questions/49550/which-hashing-algorithm-is-best-for-uniqueness-and-speed

Template Parameters

value_t

- char type

Parameters

pStr	- string for hashing
nSeed	- seed for hashing
nLen	- string length

Return values

-	32bit unsigned value

Definition at line 36 of file string_utils.inl.

strcmp()

template<class value_t >

constexpr int qx::strcmp ( const value_t *  pszLeft, const value_t *  pszRight  )

constexpr

Constexpr compare two strings.

Template Parameters

value_t

- char type

Parameters

pszLeft	- first string (zero terminated)
pszRight	- second string (zero terminated)

Return values

-	< 0 the first character that does not match has a lower value in ptr1 than in ptr2 0 the contents of both strings are equal > 0 the first character that does not match has a greater value in ptr1 than in ptr2

Definition at line 134 of file string_utils.inl.

strlen()

template<class value_t >

constexpr std::size_t qx::strlen ( const value_t *  psz )

constexpr

Naive but constexpr string length algorithm, for runtime prefer std::strlen as there are may be a lot of optimizations.

Template Parameters

value_t

- char type

Parameters

psz	- pointer to string zero terminated

Return values

-	string length

Definition at line 250 of file string_utils.inl.