(1) (
Neighborhood
Awareness
Networking) See
Wi-Fi Aware.
(2) (NaN) (
Not
A Number) An undefined value, mostly occurring when a non-floating point number is computed by a floating point operation. For example, special characters are placed in the result field for a "quiet NaN," which the application can detect, or the floating point unit (FPU) can create a "signaling NaN" by causing an interrupt ("throwing an exception"). See
floating point and
math coprocessor.