Leonardus: adapter128.h File Reference

Adapters for 128 bit versions of standard functions. More...

#include <string>
#include <gmp.h>

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Namespaces
namespace	adapter128
	Collection of adapters for 128 bit data types.

Functions
std::string	__int128_to_string (__int128 p_z)
	We need an adapter function, because __int128 isn't supported by std::to_string().

std::string	__float128_to_string (__float128 p_float, size_t p_precision)
	We need an adapter function, because __float128 isn't supported by std::to_string().

__int128	string_to___int128 (const std::string &p_s)
	We need an adapter function, because __int128 isn't supported by the standard library.

__float128	string_to___float128 (const std::string &p_s)
	We need an adapter function, because __float128 isn't supported by the standard library.

bool	mpz_t_to___int128 (__int128 &p_dst, 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.

void	__float128_to_mpf_t (mpf_t p_dst, __float128 p_f128)
	Converts a __float128 to a mpf_t.

__float128	adapter128::ceil (__float128 p_r)
	__float128 overload of ceil().

__float128	adapter128::floor (__float128 p_r)
	__float128 overload of floor().

__float128	adapter128::trunc (__float128 p_r)
	__float128 overload of trunc().

__float128	adapter128::cos (__float128 p_angle)
	__float128 overload of cos().

__float128	adapter128::sin (__float128 p_angle)
	__float128 overload of sin().

__float128	adapter128::sqrt (__float128 p_r)
	__float128 overload of sqrt().

__float128	adapter128::atan2 (__float128 p_num, __float128 p_den)
	__float128 overload of atan2().

__float128	adapter128::asin (__float128 p_ratio)
	__float128 overload of asin().

__float128	adapter128::acos (__float128 p_ratio)
	__float128 overload of acos().

__float128	adapter128::pow (__float128 p_base, __float128 p_exp)
	__float128 overload of pow().

__float128	adapter128::rint (__float128 p_num)
	__float128 overload of rint().

__float128	adapter128::log (__float128 p_num)
	__float128 overload of log().

__float128	adapter128::log10 (__float128 p_num)
	__float128 overload of log10().

Detailed Description

Adapters for 128 bit versions of standard functions.

Copyright

  Leonardus, a minimalist stack-based programming system.
  Copyright (C) 2025  Andreas Muckenschnabel
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program.
If not, see https://www.gnu.org/licenses/.

Function Documentation

◆ __float128_to_mpf_t()

void __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.

◆ __float128_to_string()

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

We need an adapter function, because __float128 isn't supported by std::to_string().

Implementation with GNU quadmath.

Parameters

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

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

◆ __int128_to_mpz_t()

void __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()

std::string __int128_to_string ( __int128 p_z )

We need an adapter function, because __int128 isn't supported by std::to_string().

Parameters

[in] p_z We need a representation for this integer.

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

◆ mpz_t_to___int128()

bool mpz_t_to___int128	(	__int128 &	p_dst,
		const mpz_t	p_src
	)

Converts a mpz_t into an __int128.

Parameters

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

Returns: bool ... true, if mpz_t fits into 128 bit integer, false otherwise.

◆ string_to___float128()

__float128 string_to___float128 ( const std::string & p_s )

We need an adapter function, because __float128 isn't supported by the standard library.

Implemented with GNU quadmath. We accept loosing unsignificant digits during conversion.

Parameters

[in] p_s Contains a string representation.

Returns: __float128 ... The float.

◆ string_to___int128()

__int128 string_to___int128 ( const std::string & p_s )

We need an adapter function, because __int128 isn't 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.

Namespaces

Functions

Detailed Description

Function Documentation

◆ __float128_to_mpf_t()

◆ __float128_to_string()

◆ __int128_to_mpz_t()

◆ __int128_to_string()

◆ mpz_t_to___int128()

◆ string_to___float128()

◆ string_to___int128()