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std::pow

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< cpp‎ | numeric‎ | math

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C++
 
ニューメリックスライブラリ
一般的な数学関数
浮動小数点環境
複素数
数値配列
擬似乱数生成
コンパイル時有理数演算 (C++11)
汎用の数値演算
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Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
一般的な数学関数
機能します
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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)
指数関数
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Exponential functions
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exp
exp2(C++11)
expm1(C++11)
log
log10
log1p(C++11)
log2(C++11)
電源機能
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Power functions
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sqrt
cbrt(C++11)
hypot(C++11)
pow
三角関数や双曲線関数
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Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C++11)
acosh(C++11)
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エラーおよびガンマ関数
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Error and gamma functions
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erf(C++11)
erfc(C++11)
lgamma(C++11)
tgamma(C++11)
最も近い整数の浮動小数点演算
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Nearest integer floating point operations
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ceil
floor
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(C++11)
(C++11)
trunc(C++11)
nearbyint(C++11)
rint
lrint
llrint		(C++11)
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点操作関数に浮かぶ
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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)
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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)
マクロ定数
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Macro constants
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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       pow( float base, float exp );
 (1)
double      pow( double base, double exp );
 (2)
long double pow( long double base, long double exp );
 (3)
Promoted    pow( Arithmetic base, Arithmetic exp );
 (4) (C++11およびそれ以降)
float       pow( float base, int iexp );
 (5) (C++11以前)
double      pow( double base, int iexp );
 (6) (C++11以前)
long double pow( long double base, int iexp );
 (7) (C++11以前)
累乗しbaseの値を計算しexpまたはiexp.
Original:
Computes the value of base raised to the power exp or iexp.
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4)
オーバーロードのセットまたは1-3で覆われていない算術型の引数のすべての組合せに対する関数テンプレート）。いずれかの引数が整数型を持つ場合、それはdoubleにキャストされます。いずれかの引数がlong doubleである場合、戻り値の型Promotedもlong doubleであり、それ以外の場合、戻り値の型は常にdoubleです.
Original:
A set of overloads or a function template for all combinations of arguments of arithmetic type not covered by 1-3). If any argument has integral type, it is cast to double. If any argument is long double, then the return type Promoted is also long double, otherwise the return type is always double.
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目次

[編集] パラメータ

base -
浮動小数点値としてベース
Original:
base as floating point value
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exp -
浮動小数点値として指数
Original:
exponent as floating point value
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iexp -
整数値として指数
Original:
exponent as integer value
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[編集] 値を返します

base累乗（expまたはiexp）.
Original:
base raised by power (exp or iexp).
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baseが0で、expより小さいか​0​に等しい場合、ドメインエラーが発生します。 NANはその場合に返されます.
Original:
Domain error occurs if base is 0 and exp is less than or equal to ​0​. NAN is returned in that case.
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baseが負であるとexpが整数値でない場合は、ドメインエラーが発生します。 NANはその場合に返されます.
Original:
Domain error occurs if base is negative and exp is not an integer value. NAN is returned in that case.
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オーバーフローが発生した場合、範囲エラーが発生します。 HUGEVALはその場合に返されます.
Original:
Range error occurs if an overflow takes place. HUGEVAL is returned in that case.
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[編集] ノート

pow(float, int)返しfloatまで、C + +11（当たりの過負荷5）が、C + +11（当たりの過負荷4）から戻りdouble
Original:
pow(float, int) returns float until C++11 (per overload 5) but returns double since C++11 (per overload 4)
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[編集] 参照
戻り eを与えられた電力（ex）に引き上げた
Original:
returns e raised to the given power (ex)
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(関数) [edit]
計算する自然（底 E）対数（底へ E）（ln(x)）
Original:
computes natural (base e) logarithm (to base e) (ln(x))
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(関数) [edit]
平方根は（√x）を計算します
Original:
computes square root (√x)
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(関数) [edit]
(C++11)
立方根は（3√x）を計算します
Original:
computes cubic root (3√x)
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(関数) [edit]
複雑な電力は、一方または両方の引数が複素数かもしれません
Original:
complex power, one or both arguments may be a complex number
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(関数テンプレート) [edit]
2 valarraysまたはvalarrayは、値への関数std::powを適用します
Original:
applies the function std::pow to two valarrays or a valarray and a value
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(関数テンプレート) [edit]
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