Varianti

    fpclassify

    Da cppreference.com.
    < c | numeric | math

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    Classificazione
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    Classification
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    fpclassify(C99)
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    <tbody> </tbody>
    Elemento definito nell'header <math.h>
    #define fpclassify(arg) /* implementation defined */
    Categorizza arg floating point, nelle seguenti categorie: zero, subnormali, normale, infiniti, NAN, o l'attuazione categoria definita. La macro restituisce un valore integrale.
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    Categorizes floating point value arg into the following categories: zero, subnormal, normal, infinite, NAN, or implementation-defined category. The macro returns an integral value.
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    Parametri

    arg -
    valore in virgola mobile
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    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.
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    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

    (C99)
    controlla se il numero dato ha un valore finito
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    checks if the given number has finite value
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    (funzione) [modifica]
    (C99)
    controlla se il numero dato è infinito
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    checks if the given number is infinite
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    (funzione) [modifica]
    (C99)
    controlla se il numero dato è NaN
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    checks if the given number is NaN
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    (funzione) [modifica]
    (C99)
    controlla se il numero dato è normale
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    checks if the given number is normal
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    (funzione) [modifica]
    C++ documentation for fpclassify