FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN

 

C++

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Generici operazioni numeriche 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.

iota (C++11)

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Comuni funzioni matematiche

Funzioni Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Operazioni di base 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)
Funzioni esponenziali 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)
Funzioni di risparmio energia 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.
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Funzioni trigonometriche e iperboliche 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 (C++11) acosh (C++11) atanh (C++11)

Errore e gamma funzioni 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 (C++11) erfc (C++11)	lgamma (C++11) tgamma (C++11)
Più vicini operazioni di interi in virgola mobile 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 (C++11) (C++11) (C++11)	trunc (C++11) nearbyint (C++11) rint lrint llrint (C++11) (C++11) (C++11)
Floating funzioni di manipolazione di punti 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 (C++11) (C++11) ilogb (C++11) logb (C++11)	frexp modf nextafter nexttoward (C++11) (C++11) copysign (C++11)
Classificazione / confronto Original: Classification/Comparison The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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)
Macro costanti 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 (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)

 

Defined in header <cmath>
#define FP_NORMAL    /*implementation defined*/		(dal C++11)
#define FP_SUBNORMAL /*implementation defined*/		(dal C++11)
#define FP_ZERO      /*implementation defined*/		(dal C++11)
#define FP_INFINITE  /*implementation defined*/		(dal C++11)
#define FP_NAN       /*implementation defined*/		(dal C++11)

Il FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN ciascuna macro rappresentano una categoria distinta di numeri a virgola mobile. Tutti si espandono per un'espressione costante intera.

Original:

The FP_NORMAL, FP_SUBNORMAL, FP_ZERO, FP_INFINITE, FP_NAN macros each represent a distinct category of floating-point numbers. They all expand to an integer constant expression.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Constant Original: Constant The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Explanation
FP_NORMAL	indica che il valore è normale, vale a dire non è un infinito, subnormale, not-a-number o zero Original: indicates that the value is normal, i.e. not an infinity, subnormal, not-a-number or zero The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
FP_SUBNORMAL	indica che il valore è subnormale' Original: indicates that the value is subnormal The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
FP_ZERO	indica che il valore è zero positivo o negativo Original: indicates that the value is positive or negative zero The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
FP_INFINITE	indica che il valore non è rappresentabile dal tipo sottostante (infinito positivo o negativo) Original: indicates that the value is not representable by the underlying type (positive or negative infinity) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
FP_NAN	indica che il valore non-a-numero (NaN) Original: indicates that the value is not-a-number (NaN) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Vedi anche

fpclassify (C++11)	categorizza il valore dato in virgola mobile 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. (funzione)