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FE_DIVBYZERO, FE_INEXACT, FE_INVALID, FE_OVERFLOW, FE_UNDERFLOW, FE_ALL_EXCEPT

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< c‎ | numeric‎ | fenv

 
 
 
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)
 
Defined in header <<fenv.h>>
#define FE_DIVBYZERO    /*implementation defined power of 2*/
#define FE_INEXACT      /*implementation defined power of 2*/
#define FE_INVALID      /*implementation defined power of 2*/
#define FE_OVERFLOW     /*implementation defined power of 2*/
#define FE_UNDERFLOW    /*implementation defined power of 2*/
#define FE_ALL_EXCEPT  FE_DIVBYZERO | FE_INEXACT | \

                       FE_INVALID | FE_OVERFLOW |  \

                       FE_UNDERFLOW
All diese Makro-Konstanten (außer FE_ALL_EXCEPT) auf ganzzahlige konstante Ausdrücke, die verschiedenen Potenzen von 2, die eindeutig zu identifizieren alle unterstützten Gleitkomma-Ausnahmen sind zu erweitern. Jedes Makro wird nur definiert, wenn sie unterstützt wird .
Original:
All these macro constants (except FE_ALL_EXCEPT) expand to integer constant expressions that are distinct powers of 2, which uniquely identify all supported floating-point exceptions. Each macro is only defined if it is supported.
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Die Makro konstanten FE_ALL_EXCEPT, die der bitweisen ODER aller anderen FE_* ausdehnt, wird immer definiert und ist Null, wenn Gleitkomma-Ausnahmen nicht durch die Implementierung unterstützt werden .
Original:
The macro constant FE_ALL_EXCEPT, which expands to the bitwise OR of all other FE_*, is always defined and is zero if floating-point exceptions are not supported by the implementation.
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Constant
Original:
Constant
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Explanation
FE_DIVBYZERO
Division durch Null aufgetreten während der früheren Floating-Point-Betrieb
Original:
division by zero occurred during the earlier floating-point operation
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FE_INEXACT
ungenauen Ergebnis: Rundung war notwendig, um das Ergebnis der früheren Gleitkommaoperation speichern
Original:
inexact result: rounding was necessary to store the result of the earlier floating-point operation
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FE_INVALID
ungültige Operation: je früher Floating-Point-Operation konnte nicht ausgeführt
Original:
invalid operation: the earlier floating-point operation could not performed
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FE_OVERFLOW
das Ergebnis des früheren Gleitkomma-Operation war zu groß, um darstellbar sein
Original:
the result of the earlier floating-point operation was too large to be representable
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FE_UNDERFLOW
das Ergebnis des früheren Gleitkomma-Operation war subnormal
Original:
the result of the earlier floating-point operation was subnormal
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FE_ALL_EXCEPT
ODER-Verknüpfung aller unterstützten Fließkomma-Ausnahmen
Original:
bitwise OR of all supported floating-point exceptions
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Die Implementierung kann zusätzliche Makro-Konstanten in <fenv.h> definieren, um zusätzliche Floating-Point-Ausnahmen zu ermitteln. Alle solche Konstanten beginnen mit FE_ von mindestens einem Großbuchstaben gefolgt .
Original:
The implementation may define additional macro constants in <fenv.h> to identify additional floating-point exceptions. All such constants begin with FE_ followed by at least one uppercase letter.
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[Bearbeiten] Beispiel

[Bearbeiten] Siehe auch

C++ documentation for floating point exception macros