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FE_DFL_ENV

Da cppreference.com.
< c‎ | numeric‎ | fenv

Defined in header <<fenv.h>>
#define FE_DFL_ENV  /*implementation defined*/
Il FE_DFL_ENV macro costante si espande a un'espressione di const fenv_t* tipo, che punta ad una copia completa dell'ambiente predefinito in virgola mobile, vale a dire, l'ambiente caricato all'avvio del programma.
Original:
The macro constant FE_DFL_ENV expands to an expression of type const fenv_t*, which points to a full copy of the default floating-point environment, that is, the environment as loaded at program startup.
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Ulteriori macro che iniziano con FE_ seguita da lettere maiuscole, e hanno la const fenv_t* tipo, possono essere supportati da una implementazione.
Original:
Additional macros that begin with FE_ followed by uppercase letters, and have the type const fenv_t*, may be supported by an implementation.
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salva o ripristina l'ambiente corrente in virgola mobile
Original:
saves or restores the current floating point environment
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(funzione) [edit]
ripristina la virgola mobile e solleva l'ambiente precedentemente generare eccezioni
Original:
restores the floating-point environment and raises the previously raise exceptions
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(funzione) [edit]
C++ documentation for FE_DFL_ENV