std::pow

 

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一般的な数学関数

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コンパイル時有理数算術 (C++11)

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汎用の数値演算

iota (C++11)

accumulate

inner_product

adjacent_difference

partial_sum

 

一般的な数学関数

機能します 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.
abs(int) labs llabs imaxabs (C++11) abs(float) fabs div ldiv lldiv imaxdiv (C++11) fmod	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 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)
電源機能 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
三角関数や双曲線関数 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.
sin cos tan asin acos atan atan2	sinh cosh tanh asinh (C++11) acosh (C++11) atanh (C++11)

エラーおよびガンマ関数 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)
最も近い整数の浮動小数点演算 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)
点操作関数に浮かぶ 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)
分類/比較 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)
マクロ定数 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)

 

ヘッダ <cmath> で定義
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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パラメータ

base	-	浮動小数点値としてベース Original: base as 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.
exp	-	浮動小数点値として指数 Original: exponent as 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.
iexp	-	整数値として指数 Original: exponent as integer value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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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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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参照

exp	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) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数)
log	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)) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数)
sqrt	平方根は（√x）を計算します Original: computes square root (√x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数)
cbrt (C++11)	立方根は（3√x）を計算します Original: computes cubic root (3√x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数)
pow(std::complex)	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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数テンプレート)
pow(std::valarray)	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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数テンプレート)