---
title: Overbasic – Math functions
description: "**My.Math** category contains all the mathematical (math) built-in functions available in Overbasic. ## **Abs** Returns the absolute value of a number/numeric-expression. **Result type**: numeric **Arguments**: - **EXPRESSION**: any numeric expression. ``` Dim a As Numeric = My.Math.Abs(-2) 'Result: 2 Dim…"
url: "https://www.overcharts.com/en/helpcenter/docs/overbasic-math-functions/"
updated: "2023-01-20"
category: "Overbasic / Built-In Funtions"
---

# Overbasic – Math functions

**My.Math** category contains all the mathematical (math) built-in functions available in Overbasic.

## **Abs**

Returns the absolute value of a number/numeric-expression.

**Result type**: numeric

**Arguments**:

- **EXPRESSION**: any numeric expression.

```
Dim a As Numeric = My.Math.Abs(-2) 'Result: 2
Dim b As Numeric = My.Math.Abs(10) 'Result: 10
```

## **Atan**

Returns the angle in radians of a number/numeric-expression.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression representing a tangent.

```
Dim a As Numeric = My.Math.Atan(1) 'Result: 0.78539816339745
```

## **Cdeg**

Converts a number/numeric-expression from radians to degrees.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression.

```
Dim a As Numeric = My.Math.Cdeg(0.78539816339745) 'Result: 45
```

## **Cnum**

Returns the numeric value of a string.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any string.

```
Dim a As Numeric = My.Math.Cnum("2") 'Result: 2
```

## **Cos**

Returns the cosine of an angle.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression representing an angle in radians.

```
Dim a As Numeric = My.Math.Cos(3.14159265358979) 'Result: -1
```

## **Crad**

Converts a number/numeric-expression from degrees to radians.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression representing an angle in degrees.

```
Dim a As Numeric = My.Math.Crad(45) 'Result: 0.78539816339745
```

## **Dec**

Returns the decimal part of a number/numeric-expression.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression.

```
Dim a As Numeric = My.Math.Dec(2.5) 'Result: 0.5
```

## **Exp**

Returns **e** (a mathematical constant whose value is approximately 2.71828) raised to the specified power. It is the inverse of the **Log** function: Eg. Log(10) = 2.30258, Exp(2.30258) = 10

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression.

```
Dim a As Numeric = My.Math.Exp(2) 'Result: 7.38905609893065
```

## **Fix**

Returns the integer part of a number/numeric-expression. If number is negative, returns the first negative integer greater than or equal to.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression.

```
Dim a As Numeric = My.Math.Fix(2.5) 'Result: 2
Dim b As Numeric = My.Math.Fix(-2.7) 'Result: -2
```

## **Int**

Returns the integer part of a number/numeric-expression. If number is negative, returns the first negative integer lower than or equal.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression.

```
Dim a As Numeric = My.Math.Int(2.5) 'Result: 2
Dim b As Numeric = My.Math.Int(-2.7) 'Result: -3
```

## **Log**

Calculates the natural logarithm (or of the specified base) of a number/numeric-expression.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression.
- **BASE**: (*optional*) is the base of the logarithm. If not specified, it is the base of the natural logarithm (2.71828).

```
Dim a As Numeric = My.Math.Log(10) 'Result: 2.30258
Dim b As Numeric = My.Math.Log(10, 10) 'Result: 1
```

## **Mod**

Returns the remainder after dividing two numbers/numeric-expressions.

****Result type****: numeric

****Arguments****:

- **EXPRESSION1**: any numeric expression.
- **EXPRESSION2**: any numeric expression.

```
Dim a As Numeric = My.Math.Mod(5, 4) 'Result: 1
```

## **Pi**

Returns PI value.

****Result type****: numeric

```
Dim a As Numeric = My.Math.Pi 'Result: 3.14159265358979
```

## **Rnd**

Returns a random number between 0 and 1.

****Result type****: numeric

```
Dim a As Numeric = My.Math.Rnd
```

## **Round**

Rounds the decimal part of a number to a specific digit.

****Result type****: numeric

****Arguments****:

- **EXPRESSION** any numeric expression.
- **DECIMALS**: (*optional*) any numeric expression representing the decimal digit to which to round EXPRESSION. If omitted, EXPRESSION is rounded to the nearest integer.

```
Dim a As Numeric = My.Math.Round(21.456) 'Result: 21
Dim b As Numeric = My.Math.Round(21.456, 0) 'Result: 21
Dim c As Numeric = My.Math.Round(21.456, 1) 'Result: 21.5
Dim d As Numeric = My.Math.Round(21.456, 2) 'Result: 21.46
```

## **Sin**

Returns the sine of an angle.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression representing an angle in radians.

```
Dim a As Numeric = My.Math.Sin(3.14159265358979) 'Result: 0
```

## **Sqr**

Returns the square root of a number/numeric-expression.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression.

```
Dim a As Numeric = My.Math.Sqr(4) 'Result: 2
```

## **Stdev**

Calculates the standard deviation of a data series considering the last x periods.

****Result type****: numeric

****Arguments****:

- **DATA** any data function (e.g. Open, High, Low, Close, Volume), indicator, array type variable (or function).
- **PERIODS**: number of bars to calculate the standard deviation on.

```
Dim a As Numeric = My.Math.Stdev(Close, 10)
```

## **Sum**

Sum EXPRESSION results of last x periods.

****Result type****: numeric

****Arguments****:

- **EXPRESSION** any numeric expression.
- **PERIODS**: number of bars to calculate Expression on (including current bar).

```
'Sum Close values of last 10 bars:
Dim a As Numeric = My.Math.Sum(Close, 10)
```

## **Tan**

Returns the tangent of an angle.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any numeric expression representing an angle in radians.

```
Dim a As Numeric = My.Math.Tan(3.14159265358979 / 4) 'Result: 1
```

## **Val**

Returns the numeric value of a string.

****Result type****: numeric

****Arguments****:

- **EXPRESSION**: any string.

```
Dim a As Numeric = My.Math.Val("2") 'Result: 2
```