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    std::atan

    Da cppreference.com.
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    <tbody> </tbody>
    Elemento definito nell'header <cmath>
    float atan( float arg );
    double atan( double arg );
    long double atan( long double arg );
    double atan( Integral arg );
    		 (dal C++11)
    Calcola arcotangente di arg
    Original:
    Computes arc tangent of arg
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    Parametri

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

    arcotangente di arg in radianti nell'intervallo radianti [-π/2; π/2].
    Original:
    arc tangent of arg in radians in the range of [-π/2; π/2] radians.
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    Vedi anche
    arco tangente, utilizzando le indicazioni per determinare quadranti
    Original:
    arc tangent, using signs to determine quadrants
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    (funzione) [modifica]
    calcola arcoseno (arcsin(x))
    Original:
    computes arc sine (arcsin(x))
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    (funzione) [modifica]
    calcola l'arcocoseno (arccos(x))
    Original:
    computes arc cosine (arccos(x))
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    (funzione) [modifica]
    calcola tangente (tan(x))
    Original:
    computes tangent (tan(x))
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    (funzione) [modifica]
    (C++11)
    		 computes arc tangent of a complex number (arctan(z))
    (funzione di modello) [modifica]
    applica la std::atan funzione a ogni elemento di valarray
    Original:
    applies the function std::atan to each element of valarray
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    (funzione di modello) [modifica]