Espacios de nombres
Variantes
Acciones

FE_DOWNWARD, FE_TONEAREST, FE_TOWARDZERO, FE_UPWARD

De cppreference.com
< c‎ | numeric‎ | fenv

Definido en la cabecera <<fenv.h>>
#define FE_DOWNWARD     /*implementation defined*/
(desde C99)
#define FE_TONEAREST    /*implementation defined*/
(desde C99)
#define FE_TOWARDZERO   /*implementation defined*/
(desde C99)
#define FE_UPWARD       /*implementation defined*/
(desde C99)
Cada una de estas constantes macro se expande a un número entero no negativo expresión constante, que puede utilizarse con me fesetround y fegetround para indicar uno de los modos de redondeo compatibles de punto flotante. La aplicación puede definir adicionales constantes modo de redondeo en <fenv.h>, que todo debe comenzar con FE_ seguido por al menos una letra mayúscula. Cada macro se define sólo si es respaldada .
Original:
Each of these macro constants expands to a nonnegative integer constant expression, which can me used with fesetround and fegetround to indicate one of the supported floating-point rounding modes. The implementation may define additional rounding mode constants in <fenv.h>, which should all begin with FE_ followed by at least one uppercase letter. Each macro is only defined if it is supported.
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En la mayoría de las implementaciones, estas constantes macro ampliar a los valores iguales a los valores de FLT_ROUNDS y float_round_style
Original:
On most implementations, these macro constants expand to the values equal to the values of FLT_ROUNDS and float_round_style
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Constant
Original:
Constant
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Explanation
FE_DOWNWARD
redondeo hacia el infinito negativo
Original:
rounding towards negative infinity
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FE_TONEAREST
redondeo hacia entero más cercano
Original:
rounding towards nearest integer
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FE_TOWARDZERO
redondeo hacia cero
Original:
rounding towards zero
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FE_UPWARD
redondeo hacia el infinito positivo
Original:
rounding towards positive infinity
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Modos adicionales de redondeo puede estar avalado por una implementación .
Original:
Additional rounding modes may be supported by an implementation.
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[editar] Ejemplo

[editar] Ver también

obtiene o establece la dirección redondeo
Original:
gets or sets rounding direction
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(función) [editar]
C++ documentation for floating point rounding macros