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feholdexcept

De cppreference.com
< c‎ | numeric‎ | fenv

Defined in header <<fenv.h>>
int feholdexcept( fenv_t* envp );
En primer lugar, guarda la coma flotante entorno al objeto apuntado por envp (similar a fegetenv), luego borra todos los indicadores de estado de coma flotante, y luego instala el modo non-stop: el futuro excepciones de punto flotante no interrumpirá la ejecución ( no atrapará), hasta que el entorno de coma flotante está restaurado por feupdateenv o fesetenv .
Original:
First, saves the current floating-point environment to the object pointed to by envp (similar to fegetenv), then clears all floating-point status flags, and then installs the non-stop mode: future floating-point exceptions will not interrupt execution (will not trap), until the floating-point environment is restored by feupdateenv or fesetenv.
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Esta función se puede utilizar en el inicio de una subrutina que debe ocultar las excepciones de punto flotante, que puede suscitar de la persona que llama. Si sólo algunas excepciones deben ser suprimidos, mientras que otros deben ser reportados, el modo non-stop por lo general termina con una llamada a feupdateenv después de eliminar las excepciones no deseados .
Original:
This function may be used in the beginning of a subroutine that must hide the floating-point exceptions it may raise from the caller. If only some exceptions must be suppressed, while others must be reported, the non-stop mode is usually ended with a call to feupdateenv after clearing the unwanted exceptions.
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Contenido

[editar] Parámetros

envp -
puntero al objeto de fenv_t tipo donde el entorno de coma flotante almacenado
Original:
pointer to the object of type fenv_t where the floating-point environment will be stored
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[editar] Valor de retorno

0 en caso de éxito, no cero en caso contrario .
Original:
0 on success, non-zero otherwise.
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[editar] Ejemplo

[editar] Ver también

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]
guarda o restaura el entorno actual de punto flotante
Original:
saves or restores the current floating point environment
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(función) [edit]
defecto de punto flotante de medio ambiente
Original:
default floating-point environment
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(macro constante) [edit]
C++ documentation for feholdexcept