std::remquo

 

C++

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Numerics библиотеки

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Generic числовые операции Original: Generic numeric operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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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(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)
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 (C++11) expm1 (C++11)	log log10 log1p (C++11) log2 (C++11)
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sin cos tan asin acos atan atan2	sinh cosh tanh asinh (C++11) acosh (C++11) atanh (C++11)

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erf (C++11) erfc (C++11)	lgamma (C++11) tgamma (C++11)
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.
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ldexp scalbn scalbln (C++11) (C++11) ilogb (C++11) logb (C++11)	frexp modf nextafter nexttoward (C++11) (C++11) copysign (C++11)
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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)
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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)

 

Заголовочный файл <cmath>
float       remquo( float x, float y, int *quo );	(1)	(начиная с C++11)
double      remquo( double x, double y, int *quo );	(2)	(начиная с C++11)
long double remquo( long double x, long double y, int *quo );	(3)	(начиная с C++11)
Promoted    remquo( Arithmetic x, Arithmetic y, int *quo );	(4)	(начиная с C++11)

Вычисляет остаток с плавающей точкой операции деления x/y как remainder функция. Кроме того, знак и по крайней мере три из последних битов x/y будут храниться в quo.

Original:

Computes the remainder of the floating point division operation x/y as the remainder function does. Additionally, the sign and at least the three of the last bits of x/y will be stored in quo.

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4)

Если какой-либо из аргументов имеет целый тип, он приведен к double. Если любой другой аргумент long double, то возвращаемый тип long double, иначе это double

Original:

If any argument has integral type, it is cast to double. If any other argument is long double, then the return type is long double, otherwise it is double

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Параметры

x, y	-	с плавающей точкой Original: floating point values The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
quo	-	указатель на целое число.. Значение хранить некоторые биты x/y дюйма Original: pointer to an integer value to store some bits of x/y in The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Возвращаемое значение

остаток от деления аргумента

Original:

remainder of dividing arguments

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Notes

Эта функция полезна при реализации периодических функций с периодом точно представима в виде плавающей запятой: при расчете sin(πx) для очень большого x, называя std::sin непосредственно может привести к большой ошибке, но если аргумент функции сначала уменьшается с std::remquo, младшие биты фактор может быть использован для определения знака, а остальные могут быть использованы для вычисления значения с высокой точностью.

Original:

This function is useful when implementing periodic functions with the period exactly representable as a floating-point value: when calculating sin(πx) for a very large x, calling std::sin directly may result in a large error, but if the function argument is first reduced with std::remquo, the low-order bits of the quotient may be used to determine the sign and the remainder may be used to calculate the value with high precision.

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См. также

remainder (C++11)	подписан остаток от деления операции Original: signed remainder of the division operation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция)
fmod	Остальная часть операции с плавающей точкой разделения Original: remainder of the floating point division operation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция)
div ldiv lldiv imaxdiv (C++11)	частное и остаток от деления Original: the quotient and remainder of integer division The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (функция)