isinf

Purpose

Detect infinities.

Synopsis

k = isinf(X)

Description

isinf(X) returns 1 where the elements of X are +Inf or -Inf and 0 where they are not.

Examples

A = [pi  NaN  Inf  -Inf]
          
A =
    3.1416    NaN    Inf    -Inf
          
isinf(A)
          
ans =
    0    0    1    1
          
any(isinf(A))
          
ans =
    1

See Also

finite, isnan

(c) Copyright 1994 by The MathWorks, Inc.