diyfp结构体 参考

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

成员函数说明

mul()

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.)

这是这个函数的调用关系图:

normalize()

diyfp normalize ( diyfp x )

inlinestaticnoexcept

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

前置条件

x.f != 0

这是这个函数的调用关系图:

normalize_to()

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.

这是这个函数的调用关系图:

sub()

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

这是这个函数的调用关系图:

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该结构体的文档由以下文件生成:

• simulink/json/include/nlohmann/detail/conversions/to_chars.hpp