scalbn, scalbln

 

C

言語

支援を入力します

動的なメモリ管理

エラー処理

プログラムユーティリティ

日付と時間のユーティリティ

ストリングスライブラリ

アルゴリズム

ニューメリック

入力/出力をサポートしています

ローカリゼーションサポート

スレッドのサポート (C11)

アトミック操作 (C11)

 

ニューメリック

一般的な数学関数

浮動小数点環境

Complex number arithmetics

乱数生成

型汎用数学

 

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 labs llabs imaxabs (C99) fabs div ldiv lldiv imaxdiv (C99) fmod	remainder (C99) remquo (C99) fma (C99) fmax (C99) fmin (C99) fdim (C99) nan nanf nanl (C99) (C99) (C99)
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 (C99) expm1 (C99)	log log10 log1p (C99) log2 (C99)
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 (C99)	hypot (C99) 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 (C99) acosh (C99) atanh (C99)
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 (C99) erfc (C99)	lgamma (C99) tgamma (C99)
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 (C99) (C99) (C99)	trunc (C99) nearbyint (C99) rint lrint llrint (C99) (C99) (C99)
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 (C99) (C99) ilogb (C99) logb (C99)	frexp modf nextafter nexttoward (C99) (C99) copysign (C99)
分類 Original: Classification The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fpclassify (C99)
isfinite (C99)
isinf (C99)
isnan (C99)
isnormal (C99)
signbit (C99)
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 (C99) (C99)	FP_NORMAL FP_SUBNORMAL FP_ZERO FP_INFINITE FP_NAN (C99) (C99) (C99) (C99) (C99)

 

Defined in header <cmath>
float       scalbnf( float x, int exp );
double      scalbn( double x, int exp );
long double scalbnl( long double x, int exp );
float       scalblnf( float x, long exp );
double      scalbln( double x, long exp );
long double scalblnl( long double x, long exp );

電源xに引き上げFLT_RADIXによる浮動小数点値expを乗算します。バイナリのシステムではldexp()と同等です.

Original:

Multiplies an floating point value x by FLT_RADIX raised to power exp. On binary system it is equivalent to ldexp().

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

パラメータ

arg	-	浮動小数点値 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.
exp	-	整数値 Original: 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

戻りx×FLT_RADIXexp.

Original:

Returns x×FLT_RADIXexp.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

結果は、基になる型には大きすぎる場合、範囲エラーが発生し、HUGE_VALが返されます.

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.

も参照してください

frexp	数値は仮数と2の力に分解する Original: decomposes a number into significand and a power of 2 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数)
ldexp	累乗し2によって数を乗算します Original: multiplies a number by 2 raised to a power The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数)
C++ documentation for scalbn