std::nextafter, std::nexttoward

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C++
 
Numerics的圖書館
常見的數學函數
浮點環境
複數
數字陣列
偽隨機數生成
編譯時合理的演算法 （C++11）
通用的數值運算
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Generic numeric operations
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iota（C++11）
accumulate
inner_product
adjacent_difference
partial_sum
 
常見的數學函數
功能
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Functions
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基本操作
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Basic operations
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remainder（C++11）
remquo（C++11）
fma（C++11）
fmax（C++11）
fmin（C++11）
fdim（C++11）
nan
nanf
nanl		（C++11）
（C++11）
（C++11）
指數函數
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Exponential functions
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exp
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log
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sqrt
cbrt（C++11）
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Nearest integer floating point operations
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ceil
floor
round
lround
llround		（C++11）
（C++11）
（C++11）
trunc（C++11）
nearbyint（C++11）
rint
lrint
llrint		（C++11）
（C++11）
（C++11）
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Floating point manipulation functions
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ldexp
scalbn
scalbln		（C++11）
（C++11）
ilogb（C++11）
logb（C++11）
frexp
modf
nextafter
nexttoward		（C++11）
（C++11）
copysign（C++11）
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Classification/Comparison
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fpclassify（C++11）
isfinite（C++11）
isinf（C++11）
isnan（C++11）
isnormal（C++11）
signbit（C++11）
isgreater（C++11）
isgreaterequal（C++11）
isless（C++11）
islessequal（C++11）
islessgreater（C++11）
isunordered（C++11）
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Macro constants
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HUGE_VALF
HUGE_VAL
HUGE_VALL		（C++11）

（C++11）
INFINITY（C++11）
NAN（C++11）
math_errhandling
MATH_ERRNO
MATH_ERREXCEPT		（C++11）
FP_NORMAL
FP_SUBNORMAL
FP_ZERO
FP_INFINITE
FP_NAN		（C++11）
（C++11）
（C++11）
（C++11）
（C++11）
 
Defined in header <cmath>
float       nextafter( float from, float to );
 (1) （C++11 起）
double      nextafter( double from, double to );
 (2) （C++11 起）
long double nextafter( long double from, long double to );
 (3) （C++11 起）
Promoted    nextafter( Arithmetic from, Arithmetic to );
 (4) （C++11 起）
float       nexttoward( float from, long double to );
 (5) （C++11 起）
double      nexttoward( double from, long double to );
 (6) （C++11 起）
long double nexttoward( long double from, long double to );
 (7) （C++11 起）
double      nexttoward( Integral from, long double to );
 (8) （C++11 起）
返回下一個可表示的值的fromto的方向。 from等於to，to返回.
Original:
Returns the next representable value of from in the direction of to. If from equals to to, to is returned.
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4)
如果任何參數是整數類型，它被轉換為double。如果有另一種說法是long double，則返回類型是long double，否則它是double
Original:
If any argument has integral type, it is cast to double. If any other argument is long double, then the return type is long double, otherwise it is double
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[编辑] 參數

from, to -
浮點值
Original:
floating point values
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[编辑] 返回值

下一個可表示的值的from的方向的to
Original:
the next representable value of from in the direction of to.
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[编辑] 為例

本節是不完整的
原因: no example
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