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    std::modf

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    definiert in Header <cmath>
    float       modf(float x, float* iptr );
    double      modf(double x, double* iptr );
    longdouble modf(longdouble x, longdouble* iptr );
    Zersetzt bestimmten Gleitkommawert x in integraler und Bruchteile, die jeweils die gleiche Art und Zeichen als x. Der Bestandteil (in Floating-Point-Format) in das Objekt, auf das iptr gespeichert .
    Original:
    Decomposes given floating point value x into integral and fractional parts, each having the same type and sign as x. The integral part (in floating-point format) is stored in the object pointed to by iptr.
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    Inhaltsverzeichnis

    [Bearbeiten]Parameter

    arg -
    Floating-Point-Wert
    Original:
    floating point value
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    iptr -
    Zeiger auf Gleitkomma-Wert, um den Bestandteil zu speichern
    Original:
    pointer to floating point value to store the integral part to
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    [Bearbeiten]Rückgabewert

    Der Bruchteil von x mit dem gleichen Vorzeichen wie x. Der Bestandteil wird in den Wert, auf den durch iptr gebracht .
    Original:
    The fractional part of x with the same sign as x. The integral part is put into the value pointed to by iptr.
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    [Bearbeiten]Beispiel

    #include <iostream>#include <cmath>int main(){double f =123.45;double f3;double f2 = std::modf(f, &f3);std::cout<<"Given the number "<< f <<", "<<"modf() makes "<< f3 <<" and "<< f2 <<'\n';   f =-3.21; f2 = std::modf(f, &f3);std::cout<<"Given the number "<< f <<", "<<"modf() makes "<< f3 <<" and "<< f2 <<'\n';}

    Output: 

    Given the number 123.45, modf() makes 123 and 0.45 Given the number -3.21, modf() makes -3 and -0.21

    [Bearbeiten]Siehe auch

    (C++11)
    nächste Ganzzahl nicht betragsmäßig größer als der gegebene Wert
    Original:
    nearest integer not greater in magnitude than the given value
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    (Funktion)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/numeric/math/modf&oldid=27428“
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