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std::feupdatedenv

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< cpp‎ | numeric‎ | fenv

 
 
Numerik-Bibliothek
Gemeinsame mathematischen Funktionen
Floating-Point-Umgebung
Komplexe Zahlen
Numerische Arrays
Pseudo-Zufallszahlen
Compile-time rationale Arithmetik (C++11)
Generische numerische Operationen
Original:
Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Floating-Point-Umgebung
Funktionen
Original:
Functions
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feclearexcept(C++11)
fetestexcept(C++11)
feraiseexcept(C++11)
fegetexceptflag
fesetexceptflag
(C++11)
(C++11)
fegetround
fesetround
(C++11)
(C++11)
fegetenv
fesetenv
(C++11)
feholdexcept(C++11)
feupdateenv(C++11)
Makro Konstanten
Original:
Macro constants
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FE_ALL_EXCEPT
FE_DIVBYZERO
FE_INEXACT
FE_INVALID
FE_OVERFLOW
FE_UNDERFLOW
(C++11)
FE_DOWNWARD
FE_TONEAREST
FE_TOWARDZERO
FE_UPWARD
(C++11)
FE_DFL_ENV(C++11)
 
Defined in header <cfenv>
int feupdateenv( const std::fenv_t* envp )
(seit C++11)
Zunächst erinnert sich an die Zeit erhöht Gleitkomma-Exceptions, dann stellt die Floating-Point-Umgebung aus dem Objekt, auf das envp (ähnlich std::fesetenv), dann stellt sich die Floating-Point-Ausnahmen, die gerettet wurden .
Original:
First, remembers the currently raised floating-point exceptions, then restores the floating-point environment from the object pointed to by envp (similar to std::fesetenv), then raises the floating-point exceptions that were saved.
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Diese Funktion kann verwendet werden, um die non-stop-Modus durch einen früheren Aufruf von std::feholdexcept gegründet beenden .
Original:
This function may be used to end the non-stop mode established by an earlier call to std::feholdexcept.
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[Bearbeiten] Parameter

envp -
Zeiger auf das Objekt vom Typ std::fenv_t von einem früheren Aufruf auf std::feholdexcept oder std::fegetenv oder gleich FE_DFL_ENV
Original:
pointer to the object of type std::fenv_t set by an earlier call to std::feholdexcept or std::fegetenv or equal to FE_DFL_ENV
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[Bearbeiten] Rückgabewert

0 bei Erfolg Null sonst .
Original:
0 on success, non-zero otherwise.
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[Bearbeiten] Siehe auch

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]
speichert oder stellt die aktuelle Floating-Point-Umgebung
Original:
saves or restores the current floating point environment
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(Funktion) [edit]
Standardmäßig Floating-Point-Umgebung
Original:
default floating-point environment
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(Makro konstant) [edit]