round, lround, llround

 

C

Язык

Поддержка типов

Управление динамической памятью

Обработка ошибок

Программные утилиты

Дата и время

Строки

Алгоритмы

Числовая библиотека

Поддержка ввода/вывода

Поддержка локализации

Поддержка потоков (C11)

Атомарные операции (C11)

 

Numerics

Общие математические функции

Плавающей точкой окружающей среды

Complex number arithmetics

Генерация случайных чисел

Type-родовой математике

 

Общие математические функции

Функции Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Основные операции 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)
Экспоненциальной функции 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)
Мощность функций 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
Тригонометрические и гиперболические функции 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)
Ошибка и гамма-функции 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)
Ближайшее целое число операций с плавающей точкой 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)
Плавающей точкой функции манипуляции 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)
Классификация 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)
Макро констант 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)

 

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

Вычисляет ближайшее целое к arg. Число округляется от нуля в половину случаев

Original:

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

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Параметры

arg

-

плавающей точкой 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.

Возвращаемое значение

Ближайшее целое число arg.

Original:

Nearest integer to arg.

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См. также

floor	ближайшего целого числа не больше, чем заданное значение 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. (функция)
ceil	ближайшего целого числа не меньше, чем заданное значение 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. (функция)
trunc (C99)	ближайшего целого числа не больше по величине, чем заданное значение 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. (функция)
C++ документация для round