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std::feupdatedenv

De cppreference.com
< cpp‎ | numeric‎ | fenv

 
 
Bibliothèque Numerics
Fonctions mathématiques courantes
Virgule flottante environnement
Nombres complexes
Tableaux numériques
La génération de nombres pseudo-aléatoires
Moment de la compilation arithmétique rationnelle (C++11)
Génériques des opérations numériques
Original:
Generic numeric operations
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iota (C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Virgule flottante environnement
Fonctions
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)
Macro constantes
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 )
(depuis C++11)
Tout d'abord, se souvient des cours soulevées exceptions de virgule flottante, puis restaure l'environnement en virgule flottante de l'objet pointé par envp (semblable à std::fesetenv), se pose alors les exceptions en virgule flottante qui ont été enregistrés .
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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Cette fonction peut être utilisée pour quitter le mode non-stop établi par un appel antérieur à std::feholdexcept .
Original:
This function may be used to end the non-stop mode established by an earlier call to std::feholdexcept.
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[modifier] Paramètres

envp -
pointeur vers l'objet de type std::fenv_t fixé par un appel précédent à std::feholdexcept ou std::fegetenv ou égale à 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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[modifier] Retourne la valeur

0 en cas de succès, non nuls autrement .
Original:
0 on success, non-zero otherwise.
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[modifier] Voir aussi

sauvegarde de l'environnement, efface tous les indicateurs d'état et ignore toutes les erreurs futures
Original:
saves the environment, clears all status flags and ignores all future errors
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(fonction) [edit]
sauvegarde ou restaure l'environnement actuel point flottant
Original:
saves or restores the current floating point environment
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(fonction) [edit]
(C++11)
défaut en virgule flottante environnement
Original:
default floating-point environment
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(constante macro) [edit]