isfinite (MATLAB Functions)

Detect finite elements of array

Syntax

```
TF = isfinite(A)
```

Description

TF = isfinite(A) returns an array the same size as A containing logical true (1) where the elements of the array A are finite and logical false (0) where they are infinite or NaN. For a complex number z, isfinite(z) returns 1 if both the real and imaginary parts of z are finite, and 0 if either the real or the imaginary part is infinite or NaN.

For any real A, exactly one of the three quantities isfinite(A), isinf(A), and isnan(A) is equal to one.

Examples

a = [-2  -1  0  1  2];

isfinite(1./a)
Warning: Divide by zero.

ans =
     1     1     0     1     1

isfinite(0./a)
Warning: Divide by zero.

ans =
     1     1     0     1     1

See Also

isinf, isnan, is*

isfield isfloat