Varianti

    std::abs<div class="t-tr-text">(Float)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(float)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>, std::fabs

    Da cppreference.com.

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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
    Original:
    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
    Original:
    Power functions
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    sqrt
    cbrt(C++11)
    hypot(C++11)
    pow
    Funzioni trigonometriche e iperboliche
    Original:
    Trigonometric and hyperbolic functions
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    sinh
    cosh
    tanh
    asinh(C++11)
    acosh(C++11)
    atanh(C++11)
    Errore e gamma funzioni
    Original:
    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
    Original:
    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
    Original:
    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>
    float abs( float arg );
    double abs( double arg );
    long double abs( long double arg );
    float fabs( float arg );
    double fabs( double arg );
    long double fabs( long double arg );
    double fabs( Integral arg );
    		 (dal C++11)
    Calcola il valore assoluto di un arg valore in virgola mobile.
    Original:
    Computes the absolute value of a floating point value arg.
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    Parametri

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

    il valore assoluto di arg (|arg|)
    Original:
    the absolute value of arg (|arg|)
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    Vedi anche




    (C++11)
    calcola il valore assoluto di un valore integrale (|x|)
    Original:
    computes absolute value of an integral value (|x|)
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    (funzione) [modifica]
    (C++11)
    controlla se il numero dato è negativo
    Original:
    checks if the given number is negative
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    (funzione) [modifica]
    restituisce la grandezza di un numero complesso
    Original:
    returns the magnitude of a complex number
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    (funzione di modello) [modifica]
    applica la std::abs funzione a ogni elemento di valarray
    Original:
    applies the function std::abs to each element of valarray
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    (funzione di modello) [modifica]