round, lround, llround

 

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 <math.h>
float       roundf( float arg );		(C99以来)
double      round( double arg );		(C99以来)
long double roundl( long double arg );		(C99以来)
long      lroundf( float arg );		(C99以来)
long      lround( double arg );		(C99以来)
long      lroundl( long double arg );		(C99以来)
long long llroundf( float arg );		(C99以来)
long long llround( double arg );		(C99以来)
long long llroundl( long double arg );		(C99以来)

argに最も近い整数を計算します。数が中途半端なケースではゼロから離れて丸められます

Original:

Computes nearest integer to arg. Number is rounded away from zero in halfway cases

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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.

値を返します

argに最も近い整数.

Original:

Nearest integer to arg.

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も参照してください

floor	最も近い整数ではありません指定された値より大きい Original: nearest integer not greater than the given value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (機能)
ceil	最も近い整数ではない与えられた値よりも小さい Original: nearest integer not less than the given value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (機能)
trunc (C99)	与えられた値よりも大きさが大きくない最も近い整数 Original: nearest integer not greater in magnitude than the given value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (機能)
C++ documentation for round