std::fegetenv, std::fesetenv
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| Déclaré dans l'en-tête <cfenv>
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| int fegetenv( std::fenv_t* envp ) |
(1) | (depuis C++11) |
| int fesetenv( const std::fenv_t* envp ); |
(2) | (depuis C++11) |
tente de stocker l'état de l'environnement en virgule flottante dans l'objet pointé par
2) envp .Original:
Attempts to store the status of the floating-point environment in the object pointed to by
envp.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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tentatives pour établir l'environnement en virgule flottante de l'objet pointé par
envp. La valeur de cette objet doit être préalablement obtenue par un appel à std::feholdexcept ou std::fegetenv ou une macro à virgule flottante constante. Si l'un des indicateurs d'état à virgule flottante sont mis en envp, ils deviennent définie dans l'environnement (et sont donc vérifiables avec std::fetestexcept), mais les correspondants exceptions de virgule flottante ne sont pas élevés (exécution se poursuit sans interruption)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 std::feholdexcept or std::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 std::fetestexcept), but the corresponding floating-point exceptions are not raised (execution continues uninterrupted)The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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[modifier] Paramètres
| envp | - | Pointeur vers l'objet de std::fenv_t type qui détient le statut de l'environnement en virgule flottante
Original: pointer to the object of type std::fenv_t which holds the status of the floating-point environment The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[modifier] Retourne la valeur
0 en cas de succès, non nuls autrement .
Original:
0 on success, non-zero otherwise.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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[modifier] Voir aussi
| (C++11) |
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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) |
| (C++11) |
restaure l'environnement en virgule flottante et soulève le lever des exceptions précédemment Original: restores the floating-point environment and raises the previously raise exceptions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) |
| (C++11) |
défaut en virgule flottante environnement Original: default floating-point environment The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (constante macro) |
