nlohmann::detail::dtoa_impl::diyfp Struct Reference

#include <json.hpp>

Public Member Functions
constexpr	diyfp (std::uint64_t f_, int e_) noexcept

Static Public Member Functions
static diyfp	sub (const diyfp &x, const diyfp &y) noexcept
	returns x - y
static diyfp	mul (const diyfp &x, const diyfp &y) noexcept
	returns x * y
static diyfp	normalize (diyfp x) noexcept
	normalize x such that the significand is >= 2^(q-1)
static diyfp	normalize_to (const diyfp &x, const int target_exponent) noexcept
	normalize x such that the result has the exponent E

Public Attributes
std::uint64_t	f = 0
int	e = 0

Static Public Attributes
static constexpr int	kPrecision = 64

Detailed Description

Definition at line 14107 of file json.hpp.

Constructor & Destructor Documentation

diyfp()

nlohmann::detail::dtoa_impl::diyfp::diyfp ( std::uint64_t f_, int e_ )

inlineconstexprnoexcept

Definition at line 14114 of file json.hpp.

Referenced by mul(), normalize(), normalize_to(), and sub().

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Member Function Documentation

mul()

diyfp nlohmann::detail::dtoa_impl::diyfp::mul ( const diyfp & x, const diyfp & y )

inlinestaticnoexcept

Note

The result is rounded. (Only the upper q bits are returned.)

Definition at line 14135 of file json.hpp.

References diyfp(), kPrecision, x, and y.

Referenced by nlohmann::detail::dtoa_impl::grisu2().

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normalize()

diyfp nlohmann::detail::dtoa_impl::diyfp::normalize ( diyfp x )

inlinestaticnoexcept

Precondition

x.f != 0

Definition at line 14200 of file json.hpp.

References diyfp(), JSON_ASSERT, and x.

Referenced by nlohmann::detail::dtoa_impl::compute_boundaries().

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normalize_to()

diyfp nlohmann::detail::dtoa_impl::diyfp::normalize_to ( const diyfp & x, const int target_exponent )

inlinestaticnoexcept

Precondition

e >= x.e and the upper e - x.e bits of x.f must be zero.

Definition at line 14216 of file json.hpp.

References diyfp(), delta, JSON_ASSERT, and x.

Referenced by nlohmann::detail::dtoa_impl::compute_boundaries().

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sub()

diyfp nlohmann::detail::dtoa_impl::diyfp::sub ( const diyfp & x, const diyfp & y )

inlinestaticnoexcept

Precondition

x.e == y.e and x.f >= y.f

Definition at line 14123 of file json.hpp.

References diyfp(), JSON_ASSERT, x, and y.

Referenced by nlohmann::detail::dtoa_impl::grisu2_digit_gen().

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Member Data Documentation

e

int nlohmann::detail::dtoa_impl::diyfp::e = 0

Definition at line 14112 of file json.hpp.

Referenced by nlohmann::detail::dtoa_impl::compute_boundaries(), nlohmann::detail::dtoa_impl::grisu2(), and nlohmann::detail::dtoa_impl::grisu2_digit_gen().

f

std::uint64_t nlohmann::detail::dtoa_impl::diyfp::f = 0

Definition at line 14111 of file json.hpp.

Referenced by nlohmann::detail::dtoa_impl::grisu2(), and nlohmann::detail::dtoa_impl::grisu2_digit_gen().

kPrecision

int nlohmann::detail::dtoa_impl::diyfp::kPrecision = 64

staticconstexpr

Definition at line 14109 of file json.hpp.

Referenced by nlohmann::detail::dtoa_impl::grisu2(), and mul().

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

• install/include/nlohmann/json.hpp