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std::atomic::operator+=,-=,&=,|=,^=

De cppreference.com
< cpp‎ | atomic‎ | atomic
 
 
Operaciones de biblioteca Atómica
Tipos
Original:
Types
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(C++11)
Funciones
Original:
Functions
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Banderas atómicas
Original:
Atomic flags
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Inicialización
Original:
Initialization
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Memoria pedido
Original:
Memory ordering
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std::atomic
Las funciones miembro
Original:
Member functions
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Funciones especializadas miembros
Original:
Specialized member functions
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atomic::operator+=atomic::operator-=atomic::operator&=atomic::operator|=atomic::operator^=
 
T operator+=( T arg );
T operator+=( T arg ) volatile;
(1) (único miembro de especialización de plantilla atomic<Integral>)
(desde C++11)
T* operator+=( std::ptrdiff_t arg );
T* operator+=( std::ptrdiff_t arg ) volatile;
(1) (único miembro de especialización de plantilla atomic<T*>)
(desde C++11)
T operator-=( T arg );
T operator-=( T arg ) volatile;
(2) (único miembro de especialización de plantilla atomic<Integral>)
(desde C++11)
T* operator-=( std::ptrdiff_t arg );
T* operator-=( std::ptrdiff_t arg ) volatile;
(2) (único miembro de especialización de plantilla atomic<T*>)
(desde C++11)
T operator&=( T arg );
T operator&=( T arg ) volatile;
(3) (único miembro de especialización de plantilla atomic<Integral>)
(desde C++11)
T operator|=( T arg );
T operator|=( T arg ) volatile;
(4) (único miembro de especialización de plantilla atomic<Integral>)
(desde C++11)
T operator^=( T arg );
T operator^=( T arg ) volatile;
(5) (único miembro de especialización de plantilla atomic<Integral>)
(desde C++11)
Atómicamente sustituye el valor actual con el resultado de cálculo que implica el valor anterior y arg. La operación es de lectura-modificación-escritura de la operación .
Original:
Atomically replaces the current value with the result of computation involving the previous value and arg. The operation is read-modify-write operation.
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1)
Realiza una suma atómica. Equivalente a fetch_add(arg) .
Original:
Performs atomic addition. Equivalent to fetch_add(arg).
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2)
Realiza atómica resta. Equivalente a fetch_sub(arg) .
Original:
Performs atomic subtraction. Equivalent to fetch_sub(arg).
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3)
Realiza atómica y bit a bit. Equivalente a fetch_and(arg) .
Original:
Performs atomic bitwise and. Equivalent to fetch_and(arg).
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4)
Realiza atómica o bit a bit. Equivalente a fetch_or(arg) .
Original:
Performs atomic bitwise or. Equivalent to fetch_or(arg).
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5)
Realiza atómico bit a bit exclusiva o. Equivalente a fetch_xor(arg) .
Original:
Performs atomic bitwise exclusive or. Equivalent to fetch_xor(arg).
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Para los tipos de Integral firmados, la aritmética se define para utilizar la representación complementaria de dos. Ya está
Original:
For signed Integral types, arithmetic is defined to use two’s complement representation. There
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hay resultados no definidos. Para los tipos de T*, el resultado puede ser una dirección definida, pero las operaciones de otro modo no tienen un comportamiento no definido .
Original:
are no undefined results. For T* types, the result may be an undefined address, but the operations otherwise have no undefined behavior.
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Contenido

[editar] Parámetros

arg -
el argumento a favor de la operación aritmética
Original:
the argument for the arithmetic operation
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[editar] Valor de retorno

El valor resultante .
Original:
The resulting value.
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[editar] Excepciones

noexcept specification:  
noexcept
  (desde C++11)

[editar] Ver también

aumenta o disminuye el valor atómico en uno
(función miembro público) [editar]