std::fegetenv, std::fesetenv
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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) |
1)
tente de stocker l'tat de l'environnement en virgule flottante dans l'objet point par
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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2)
tentatives pour tablir l'environnement en virgule flottante de l'objet point par
envp. La valeur de cette objet doit tre pralablement obtenue par un appel std::feholdexcept ou std::fegetenv ou une macro virgule flottante constante. Si l'un des indicateurs d'tat virgule flottante sont mis en envp, ils deviennent dfinie dans l'environnement (et sont donc vrifiables avec std::fetestexcept), mais les correspondants exceptions de virgule flottante ne sont pas levs (excution 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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Paramtres
| envp | - | Pointeur vers l'objet de
std::fenv_t type qui dtient le statut de l'environnement en virgule flottanteOriginal: pointer to the object of type std::fenv_t which holds the status of the floating-point environmentThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Retourne la valeur
0 en cas de succs, 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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Voir aussi
(C++11) |
sauvegarde de l'environnement, efface tous les indicateurs d'tat 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 soulve le lever des exceptions prcdemment 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) |
dfaut 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) |