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FE_DFL_ENV

De cppreference.com
< c‎ | numeric‎ | fenv

Defined in header <<fenv.h>>
#define FE_DFL_ENV  /*implementation defined*/
El FE_DFL_ENV constante macro se expande a una expresión de const fenv_t* tipo, lo que apunta a una copia completa del defecto de punto flotante de medio ambiente, es decir, el medio ambiente, cargado al inicio del programa .
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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Macros adicionales que comienzan con FE_ seguida por letras mayúsculas, y tienen la const fenv_t* tipo, puede ser apoyado por una implementación .
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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guarda o restaura el entorno actual de punto flotante
Original:
saves or restores the current floating point environment
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(función) [edit]
restaura el entorno de coma flotante y plantea la anteriormente lanzar excepciones
Original:
restores the floating-point environment and raises the previously raise exceptions
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(función) [edit]
C++ documentation for FE_DFL_ENV