conversion Namespace Reference

Collection of conversion functions. More...

Functions
std::string	__int128_to_string (__int128 p_z)
	Converts an __int128 to its string representation.
std::string	__float128_to_string (__float128 p_float, size_t p_precision)
	Converts a __float128 to its string representation.
__int128	string_to___int128 (const std::string &p_s)
	Converts a string to an __int128 value.
__float128	string_to___float128 (const std::string &p_s)
	Converts a string to a __float128 value.
std::pair< bool, __float128 >	mpz_t_to___float128 (const mpz_t p_src)
	Converts a mpz_t into a __float128.
std::pair< bool, __int128 >	mpz_t_to___int128 (const mpz_t p_src)
	Converts a mpz_t into an __int128.
void	__int128_to_mpz_t (mpz_t p_dst, __int128 p_src)
	Converts an __int128 into a mpz_t.
bool	__float128_to_mpf_t (mpf_t p_dst, __float128 p_f128)
	Converts a __float128 to a mpf_t.

Detailed Description

Collection of conversion functions.

Function Documentation

__float128_to_mpf_t()

bool conversion::__float128_to_mpf_t	(	mpf_t	p_dst,
		__float128	p_f128
	)

Converts a __float128 to a mpf_t.

Note: GMP doesn't support 128 Bit floats directly.

Parameters

[out]	p_dst	The destination mpf_t.
[in]	p_f128	The source __float128.

Returns

bool ... false for an internal error, otherwise true.

__float128_to_string()

string conversion::__float128_to_string	(	__float128	p_float,
		size_t	p_precision
	)

Converts a __float128 to its string representation.

This adapter is required because __float128 is not supported by std::to_string(). Implementation uses GNU quadmath.

Parameters

[in]	p_float	The __float128 to convert.
[in]	p_precision	The number of decimal digits to include.

Returns

std::string ... The string representation of p_float.

__int128_to_mpz_t()

void conversion::__int128_to_mpz_t	(	mpz_t	p_dst,
		__int128	p_src
	)

Converts an __int128 into a mpz_t.

Parameters

[out]	p_dst	The destination mpz_t.
[in]	p_src	The source __int128.

__int128_to_string()

string conversion::__int128_to_string

(

__int128

p_z

)

Converts an __int128 to its string representation.

This adapter is required because __int128 is not supported by std::to_string().

Parameters

[in]

p_z

The __int128 value to convert.

Returns

std::string ... The string representation of p_z.

mpz_t_to___float128()

std::pair< bool, __float128 > conversion::mpz_t_to___float128

(

const mpz_t

p_src

)

Converts a mpz_t into a __float128.

Least significant digits are discarded if they do not fit into the __float128.

Parameters

[in]

p_src

The source mpz_t.

Returns

std::pair<bool,__float128> ...

- true, if p_src can be represented or approximated by a __float128, false otherwise.

- The destination __float128.

mpz_t_to___int128()

std::pair< bool, __int128 > conversion::mpz_t_to___int128

(

const mpz_t

p_src

)

Converts a mpz_t into an __int128.

Parameters

[in]

p_src

The source mpz_t.

Returns

std::pair<bool,__int128> ...

- true, if p_src fits into __int128, false otherwise.

- The destination __int128.

string_to___float128()

__float128 conversion::string_to___float128

(

const std::string &

p_s

)

Converts a string to a __float128 value.

This adapter is required because __float128 is not supported by the standard library. Implemented using GNU quadmath. Insignificant digits may be discarded during conversion.

Precondition

p_s must be a syntactically valid float and must not cause an overflow in __float128.

Parameters

[in]

p_s

The string representation of the float.

Returns

__float128 ... The converted float.

string_to___int128()

__int128 conversion::string_to___int128

(

const std::string &

p_s

)

Converts a string to an __int128 value.

This adapter is required because __int128 is not supported by the standard library.

Precondition

p_s format is: [-][digit]+

MIN_INT <= integer interpretation <= MAX_INT

Parameters

[in]

p_s

The string to convert.

Returns

__int128 ... The integer interpretation of p_s.