# isapprox

Below is a demonstration of the features of the isapprox function

## Contents

```clear; close all; clc;
```

## Syntax

[L]=isapprox(A,B,tolLevel);

## Description

This function returns if A is approximately equal to B (to within tolLevel) in the form of the logical L. In other words the function simply evaluates: L=abs(A-B)<tolLevel;

## Examples

```tolLevel=1e-4; % The tolerance level to use

A = - pi; %Example number
B = A + tolLevel/100; % Small difference
C = A + tolLevel*100; % Big difference
D = A + tolLevel; % Difference equal to the tolerance level
```

Using isapprox here should return a true since the difference is smaller than the tolerance.

```L1 = isapprox(A,B,tolLevel)
```
```L1 =

logical

1

```

Using isapprox here should return a false since the difference is larger than the tolerance.

```L2 = isapprox(A,C,tolLevel)
```
```L2 =

logical

0

```

Using isapprox here should return a false since the difference is equal not smaller than the tolerance.

```L3 = isapprox(A,D,tolLevel)
```
```L3 =

logical

0

```

GIBBON www.gibboncode.org

Kevin Mattheus Moerman, [email protected]

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GIBBON: The Geometry and Image-based Bioengineering add-On. A toolbox for image segmentation, image-based modeling, meshing, and finite element analysis.

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