detail::dtoa_impl::diyfp结构体 参考

#include <json.hpp>

Public 成员函数
constexpr	diyfp (std::uint64_t f_, int e_) noexcept

静态 Public 成员函数
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 属性
std::uint64_t	f = 0
int	e = 0

静态 Public 属性
static constexpr int	kPrecision = 64

构造及析构函数说明

diyfp()

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

inlineconstexprnoexcept

成员函数说明

mul()

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

inlinestaticnoexcept

returns x * y

注解

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

normalize()

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

inlinestaticnoexcept

normalize x such that the significand is >= 2^(q-1)

前置条件

x.f != 0

normalize_to()

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

inlinestaticnoexcept

normalize x such that the result has the exponent E

前置条件

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

sub()

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

inlinestaticnoexcept

returns x - y

前置条件

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

类成员变量说明

e

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

f

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

kPrecision

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

staticconstexpr

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该结构体的文档由以下文件生成:

• third/yoga/lib/nlohmann/json.hpp