# Documentation of isnum

Global Index (all files) (short | long)
| Local Index (files in subdir) (short | long)

## Function Synopsis

[out1] = isnum(in1);

## Help text

function out1 = isnum( in1 )
out1 contains 1s for elements of in1 that are numbers, and
0s for elements of in1 that are either Inf, -Inf, or NaN.

## Listing of function isnum

function [out1] = isnum(in1);
out1 = find( in1 > -Inf & in1 < Inf );