and_eq operator

and_eq operator

Bitwise and assignment operator

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  assignment-expr  :=  logical-or-expr  &=  assignment-expr   logical-or-expr  and_eq  assignment-expr  

The and_eq operator is an assignment operator that performs bitwise and . It is equivalent to logical-or-expr = logical-or-expr & assignment-expr except that logical-or-expr is evaluated only once. The keyword and_eq is interchangeable with the &= token.

Example

 unsigned bitmask = 0xFFFF; bitmask  &=  ~0x7E; // bitmask becomes 0xFF81. 

See Also

bitand , expression , or_eq , xor_eq , Chapter 3, <ciso646>