Varianti

    std::fpclassify

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    <metanoindex/>

     
    C++
     
    Numeri libreria
    Comuni funzioni matematiche
    Virgola mobile ambiente
    I numeri complessi
    Array numerici
    Pseudo-casuale generazione
    In fase di compilazione aritmetica razionale (C++11)
    Generici operazioni numeriche
    Original:
    Generic numeric operations
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    iota(C++11)
    accumulate
    inner_product
    adjacent_difference
    partial_sum
     
    Comuni funzioni matematiche
    Funzioni
    Original:
    Functions
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    Operazioni di base
    Original:
    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)
    Funzioni esponenziali
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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)
    Funzioni di risparmio energia
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    Power functions
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    sqrt
    cbrt(C++11)
    hypot(C++11)
    pow
    Funzioni trigonometriche e iperboliche
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    Trigonometric and hyperbolic functions
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    sinh
    cosh
    tanh
    asinh(C++11)
    acosh(C++11)
    atanh(C++11)
    Errore e gamma funzioni
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    Error and gamma functions
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    erf(C++11)
    erfc(C++11)
    lgamma(C++11)
    tgamma(C++11)
    Più vicini operazioni di interi in virgola mobile
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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 funzioni di manipolazione di punti
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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)
    Classificazione / confronto
    Original:
    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)
    Macro costanti
    Original:
    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)
     
    <tbody> </tbody>
    Elemento definito nell'header <cmath>
    int fpclassify( float arg );
    		 (dal C++11)
    int fpclassify( double arg );
    		 (dal C++11)
    int fpclassify( long double arg );
    		 (dal C++11)
    Categorizza arg floating point, nelle seguenti categorie: zero, subnormali, normale, infiniti, NAN, o l'attuazione categoria definita.
    Original:
    Categorizes floating point value arg into the following categories: zero, subnormal, normal, infinite, NAN, or implementation-defined category.
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    Parametri

    arg -
    valore in virgola mobile
    Original:
    floating point value
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    Valore di ritorno

    uno dei FP_INFINITE, FP_NAN, FP_NORMAL, FP_SUBNORMAL, FP_ZERO o implementazione tipo definito, specificando la categoria di arg.
    Original:
    one of FP_INFINITE, FP_NAN, FP_NORMAL, FP_SUBNORMAL, FP_ZERO or implementation-defined type, specifying the category of arg.
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    Vedi anche

    (C++11)
    controlla se il numero dato ha un valore finito
    Original:
    checks if the given number has finite value
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    (funzione) [modifica]
    (C++11)
    controlla se il numero dato è infinito
    Original:
    checks if the given number is infinite
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    (funzione) [modifica]
    (C++11)
    controlla se il numero dato è NaN
    Original:
    checks if the given number is NaN
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    (funzione) [modifica]
    (C++11)
    controlla se il numero dato è normale
    Original:
    checks if the given number is normal
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    (funzione) [modifica]
    fornisce un'interfaccia per le proprietà delle query di tutti i tipi numerici fondamentali .
    Original:
    provides an interface to query properties of all fundamental numeric types.
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    (classe template) [modifica]