std::exp

来自cppreference.com

This page has been machine-translated from the English version of the wiki using Google Translate.

The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

Click here for the English version of this page

 
C++
 
Numerics的图书馆
常见的数学函数
浮点环境
复数
数字阵列
伪随机数生成
编译时合理的算法 （C++11）
通用的数值运算
Original:
Generic numeric operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
iota（C++11）
accumulate
inner_product
adjacent_difference
partial_sum
 
常见的数学函数
功能
Original:
Functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
基本操作
Original:
Basic operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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）
指数函数
Original:
Exponential functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
exp
exp2（C++11）
expm1（C++11）
log
log10
log1p（C++11）
log2（C++11）
电源的功能
Original:
Power functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
sqrt
cbrt（C++11）
hypot（C++11）
pow
三角函数和双曲功能
Original:
Trigonometric and hyperbolic functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
sinh
cosh
tanh
asinh（C++11）
acosh（C++11）
atanh（C++11）
错误和伽玛功能
Original:
Error and gamma functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
erf（C++11）
erfc（C++11）
lgamma（C++11）
tgamma（C++11）
最接近的整数，浮点运算
Original:
Nearest integer floating point operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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）
浮点操作功能
Original:
Floating point manipulation functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ldexp
scalbn
scalbln		（C++11）
（C++11）
ilogb（C++11）
logb（C++11）
frexp
modf
nextafter
nexttoward		（C++11）
（C++11）
copysign（C++11）
分类/比较
Original:
Classification/Comparison
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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）
宏常量
Original:
Macro constants
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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       exp( float arg );
double      exp( double arg );
long double exp( long double arg );
double      exp( Integral arg );
 （C++11 起）
计算“E”（欧拉数，2.7182818），提出给定的功率arg
Original:
Computes the e (Euler's number, 2.7182818) raised to the given power arg
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[编辑] 参数

arg -
浮点值
Original:
floating point value
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[编辑] 返回值

“E”提出的权力arg
Original:
e raised to the power arg
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
如果结果是过大的基础类型，HUGE_VAL范围发生错误，则返回.
Original:
If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[编辑] 另请参阅
计算自然（基地“E”）对数（基地“E”）（ln(x)）
Original:
computes natural (base e) logarithm (to base e) (ln(x))
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（函数） [edit]
引起了一些给定的功率（xy）
Original:
raises a number to the given power (xy)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（函数） [edit]
复杂的电源，一个或这两个参数可以是复数
Original:
complex power, one or both arguments may be a complex number
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（函数模板） [edit]
适用的功能std::pow两个valarrays或valarray的和一个值
Original:
applies the function std::pow to two valarrays or a valarray and a value
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

（函数模板） [edit]
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/numeric/math/exp&oldid=29041”