isnan - check for "Not a Number" entries

Calling Sequence

r=isnan(x)

Parameters

• x : real or complex vector or matrix r : boolean vector or matrix

Description

isnan(x) returns a boolean vector or matrix which contains true entries corresponding with "Not a Number" x entries and false entries corresponding with regular x entries.

Examples

isnan([1 0.01 -%nan %inf-%inf])
 

See Also

isinf