isinf

 

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Gemeinsame mathematischen Funktionen

Floating-Point-Umgebung

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Gemeinsame mathematischen Funktionen

Funktionen Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Grundlegende Bedienung 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)
Exponentialfunktionen 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)
Power-Funktionen 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
Trigonometrische und hyperbolische Funktionen 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)
Fehler-und Gamma-Funktionen 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)
Nächste ganze Zahl Fließkomma-Operationen 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)
Floating-Point-Manipulation Funktionen 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)
Klassifizierung 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)
Makro Konstanten 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)

 

Defined in header <math.h>
#define isinf(arg) /* implementation defined */

Bestimmt, ob die angegebene Gleitkommazahl arg positiv oder negativ unendlich. Das Makro gibt einen ganzzahligen Wert .

Original:

Determines if the given floating point number arg is positive or negative infinity. The macro returns an integral value.

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Parameter

arg

-

Floating-Point-Wert 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.

Rückgabewert

Nonzero ganzzahligen Wert, wenn arg ist unendlich, ​0​ sonst .

Original:

Nonzero integral value if arg is infinite, ​0​ otherwise.

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Siehe auch

fpclassify (C99)	kategorisiert den angegebenen Gleitkommawert Original: categorizes the given 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. (Funktion)
isfinite (C99)	prüft, ob die angegebene Zahl hat endlichen Wert Original: checks if the given number has finite value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
isnan (C99)	prüft, ob die angegebene Zahl ist NaN Original: checks if the given number is NaN The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
isnormal (C99)	prüft, ob die gegebene Anzahl normal ist Original: checks if the given number is normal The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
C++ documentation for isinf