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std::remquo

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C++
 
Numerik-Bibliothek
Gemeinsame mathematischen Funktionen
Floating-Point-Umgebung
Komplexe Zahlen
Numerische Arrays
Pseudo-Zufallszahlen
Compile-time rationale Arithmetik (C++11)
Generische numerische Operationen
Original:
Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Gemeinsame mathematischen Funktionen
Funktionen
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Functions
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Grundlegende Bedienung
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Basic operations
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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)
Exponentialfunktionen
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Exponential functions
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exp
exp2(C++11)
expm1(C++11)
log
log10
log1p(C++11)
log2(C++11)
Power-Funktionen
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Power functions
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sqrt
cbrt(C++11)
hypot(C++11)
pow
Trigonometrische und hyperbolische Funktionen
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Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C++11)
acosh(C++11)
atanh(C++11)
Fehler-und Gamma-Funktionen
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Error and gamma functions
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erf(C++11)
erfc(C++11)
lgamma(C++11)
tgamma(C++11)
Nächste ganze Zahl Fließkomma-Operationen
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Nearest integer floating point operations
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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)
Floating-Point-Manipulation Funktionen
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Floating point manipulation functions
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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)
Klassifizierung / Vergleich
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Classification/Comparison
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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)
Makro Konstanten
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Macro constants
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FP_NORMAL
FP_SUBNORMAL
FP_ZERO
FP_INFINITE
FP_NAN		(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
 
definiert in Header <cmath>
float       remquo( float x, float y, int *quo );
 (1) (seit C++11)
double      remquo( double x, double y, int *quo );
 (2) (seit C++11)
long double remquo( long double x, long double y, int *quo );
 (3) (seit C++11)
Promoted    remquo( Arithmetic x, Arithmetic y, int *quo );
 (4) (seit C++11)
speichern Berechnet den Rest der Gleitkomma Divisionsoperation x/y die remainder Funktion hat. Zusätzlich das Zeichen und wenigstens die drei der letzten Bits in x/y 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)
Wenn ein Argument hat integralen Typ, wird es double gegossen. Wenn ein anderes Argument long double ist, dann ist der Rückgabetyp long double ist, sonst ist es 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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Inhaltsverzeichnis

[Bearbeiten] Parameter

x, y -
Fließkommazahlen
Original:
floating point values
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quo -
Zeiger auf einen Integer.. Wert auf einige Bits x/y in
Original:
pointer to an integer value to store some bits of x/y in
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[Bearbeiten] Rückgabewert

Rest der Division Argumente
Original:
remainder of dividing arguments
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[Bearbeiten] Notes

Diese Funktion ist nützlich bei der Umsetzung periodische Funktionen mit der Periode exakt darstellbar als Floating-Point-Wert: bei der Berechnung sin(πx) für eine sehr große x, ruft std::sin können direkt in einem großen Fehler führen, aber wenn das Argument der Funktion wird zunächst mit std::remquo reduziert, die niederwertigen Bits des Quotienten verwendet werden, um die Zeichen zu bestimmen, und der Rest kann verwendet werden, um den Wert mit hoher Genauigkeit berechnet werden .
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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[Bearbeiten] Siehe auch

(C++11)
unterzeichnet Rest der Teilungsoperation
Original:
signed remainder of the division operation
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(Funktion) [edit]
Rest der Gleitkomma Teilungsoperation
Original:
remainder of the floating point division operation
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(Funktion) [edit]



(C++11)
der Quotient und Rest der ganzzahligen Division
Original:
the quotient and remainder of integer division
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(Funktion) [edit]
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/numeric/math/remquo&oldid=29762“