`anynan`

Tests whether any element of an array is NaN.

Category: Language Fundamentals > Data Types

Syntax

tf = anynan(A)

Returns a single logical value: true if at least one element is NaN.

Description

It replaces the longer idiom any(isnan(A), 'all'). Infinite values are not NaN, so anynan([1 Inf]) is false. Integer arrays cannot hold NaN and always give false.

Input arguments

A: Numeric array of any size.

Output arguments

tf: Scalar logical.

Example

Detect NaN

anynan([1 NaN; 3 4])
anynan([1 Inf])
anynan(int8([1 2]))

Output

ans = logical
   1
ans = logical
   0
ans = logical
   0

See also

isnan anymissing allfinite rmmissing