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std::nextafter, std::nexttoward

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Numerik-Bibliothek
Gemeinsame mathematischen Funktionen
Floating-Point-Umgebung
Komplexe Zahlen
Numerische Arrays
Pseudo-Zufallszahlen
Compile-time rationale Arithmetik (C++11)
Generische numerische Operationen
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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)
 
Defined in header <cmath>
float       nextafter( float from, float to );
(1) (seit C++11)
double      nextafter( double from, double to );
(2) (seit C++11)
long double nextafter( long double from, long double to );
(3) (seit C++11)
Promoted    nextafter( Arithmetic from, Arithmetic to );
(4) (seit C++11)
float       nexttoward( float from, long double to );
(5) (seit C++11)
double      nexttoward( double from, long double to );
(6) (seit C++11)
long double nexttoward( long double from, long double to );
(7) (seit C++11)
double      nexttoward( Integral from, long double to );
(8) (seit C++11)
Gibt den nächsten Wert der darstellbaren from in Richtung to. Wenn from um to entspricht, wird to zurückgegeben .
Original:
Returns the next representable value of from in the direction of to. If from equals to to, to is returned.
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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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[Bearbeiten] Parameter

from, to -
Fließkommazahlen
Original:
floating point values
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[Bearbeiten] Rückgabewert

der nächste darstellbare Wert from in Richtung to .
Original:
the next representable value of from in the direction of to.
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[Bearbeiten] Beispiel