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nan, nanf, nanl

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< c‎ | numeric‎ | math

 
 
 
Gemeinsame mathematischen Funktionen
Funktionen
Original:
Functions
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Grundlegende Bedienung
Original:
Basic operations
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remainder(C99)
remquo(C99)
fma(C99)
fmax(C99)
fmin(C99)
fdim(C99)
nan
nanf
nanl
(C99)
(C99)
(C99)
Exponentialfunktionen
Original:
Exponential functions
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exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
Power-Funktionen
Original:
Power functions
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sqrt
cbrt(C99)
hypot(C99)
pow
Trigonometrische und hyperbolische Funktionen
Original:
Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C99)
acosh(C99)
atanh(C99)
Fehler-und Gamma-Funktionen
Original:
Error and gamma functions
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erf(C99)
erfc(C99)
lgamma(C99)
tgamma(C99)
Nächste ganze Zahl Fließkomma-Operationen
Original:
Nearest integer floating point operations
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ceil
floor
round
lround
llround
(C99)
(C99)
(C99)
trunc(C99)
nearbyint(C99)
rint
lrint
llrint
(C99)
(C99)
(C99)
Floating-Point-Manipulation Funktionen
Original:
Floating point manipulation functions
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ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
Klassifizierung
Original:
Classification
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fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
Makro Konstanten
Original:
Macro constants
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Defined in header <math.h>
float       nanf( const char* arg );
double      nan( const char* arg );
long double nanl( const char* arg );
Konvertiert die Implementierung definiert Zeichenkette arg in die entsprechende ruhigen NaN Wert. Der Anruf std::nan("string") entspricht dem Anruf std::strtod("NAN(string)", (char**)NULL); .
Original:
Converts the implementation-defined character string arg into the corresponding quiet NaN value. The call std::nan("string") is equivalent to the call std::strtod("NAN(string)", (char**)NULL);.
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[Bearbeiten] Parameter

arg -
schmale Zeichenfolge, die den Inhalt einer NaN oder einer leeren Zeichenfolge
Original:
narrow character string identifying the contents of a NaN, or an empty string
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[Bearbeiten] Rückgabewert

Der Wert NaN, die zur Identifizierung von String arg oder Null entspricht, wenn die implemntation nicht unterstützt ruhigen NaNs .
Original:
The NaN value that corresponds to the identifying string arg or zero if the implemntation does not support quiet NaNs.
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[Bearbeiten] Siehe auch

(C99)
prüft, ob die angegebene Zahl ist NaN
Original:
checks if the given number is NaN
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(Funktion) [edit]