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    fegetenv, fesetenv

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    <metanoindex/>

     
    C
     
    Numerics
     
    Fließkomma-Umgebung
    Funktionen
    Original:
    Functions
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    feclearexcept(C99)
    fetestexcept(C99)
    feraiseexcept(C99)
    fegetexceptflag
    fesetexceptflag    		(C99)
    (C99)
    fegetround
    fesetround    		(C99)
    (C99)
    fegetenv
    fesetenv    		(C99)
    feholdexcept(C99)
    feupdateenv(C99)
    Makro Konstanten
    Original:
    Macro constants
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    FE_ALL_EXCEPT
    FE_DIVBYZERO
    FE_INEXACT
    FE_INVALID
    FE_OVERFLOW
    FE_UNDERFLOW    		(C99)
    FE_DOWNWARD
    FE_TONEAREST
    FE_TOWARDZERO
    FE_UPWARD    		(C99)
    FE_DFL_ENV(C99)
     
    <tbody> </tbody>
    definiert in Header <<fenv.h>>
    int fegetenv( fenv_t* envp );
    		 (1)
    int fesetenv( const fenv_t* envp );
    		 (2)

    1)

    Versuche, den Status der Floating-Point-Umfeld, in das Objekt zu speichern, auf die envp .
    Original:
    Attempts to store the status of the floating-point environment in the object pointed to by envp.
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    2)

    Versuche, die Floating-Point-Umgebung aus dem Objekt, auf das envp etablieren. den Wert dieser Objekt muss zuvor durch einen Aufruf zu erhaltenden feholdexcept oder fegetenv oder ein Floating-Point-Makro konstant. Wenn einer der Floating-Point-Status-Flags in envp gesetzt werden, werden sie in der Umgebung gesetzt (und sind dann prüfbar mit fetestexcept) aber die entsprechenden Gleitkomma-Exceptions werden nicht erhoben (Ausführung ohne Unterbrechung fortgesetzt)
    Original:
    Attempts to establish the floating-point environment from the object pointed to by envp. The value of that object must be previously obtained by a call to feholdexcept or fegetenv or be a floating-point macro constant. If any of the floating-point status flags are set in envp, they become set in the environment (and are then testable with fetestexcept), but the corresponding floating-point exceptions are not raised (execution continues uninterrupted)
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    Parameter

    envp -
    Zeiger auf das Objekt vom Typ fenv_t die den Status hält der Floating-Point-Umgebung
    Original:
    pointer to the object of type fenv_t which holds the status of the floating-point environment
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    Rückgabewert

    0 bei Erfolg Null sonst .
    Original:
    0 on success, non-zero otherwise.
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    Beispiel

    This section is incomplete
    Reason: no example

    Siehe auch

    (C99)
    schont die Umwelt, löscht alle Status-Flags und ignoriert alle zukünftigen Fehler
    Original:
    saves the environment, clears all status flags and ignores all future errors
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    (Funktion) [edit]
    (C99)
    stellt die Floating-Point-Umgebung und stellt die zuvor Ausnahmen auslösen
    Original:
    restores the floating-point environment and raises the previously raise exceptions
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    (Funktion) [edit]
    (C99)
    Standardmäßig Floating-Point-Umgebung
    Original:
    default floating-point environment
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    (Makro konstant) [edit]
    C++ documentation for fegetenv, fesetenv