# base2dec

Convert text representation of base-`n` integer to double value

## Syntax

``D = base2dec(baseStr,n)``

## Description

example

````D = base2dec(baseStr,n)` converts the base-`n` integer represented by `baseStr` to the equivalent decimal number and returns it as a double-precision floating-point value.If `baseStr` represents an integer greater than or equal to `flintmax`, then `base2dec` might not represent it exactly as a floating-point value.```

## Examples

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Convert a character vector that represents a base-12 value to a decimal number.

```baseStr = '1B'; D = base2dec(baseStr,12)```
```D = 23 ```

Create a string array that represents multiple octal, or base-8, values.

`baseStr = ["1777" "172" "16"]`
```baseStr = 1x3 string "1777" "172" "16" ```

Convert the octal values and return a numeric array.

`D = base2dec(baseStr,8)`
```D = 1×3 1023 122 14 ```

## Input Arguments

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Text representing base-`n` numbers, specified as a character array, cell array of character vectors, or string array. `baseStr` represents base-`n` digits using numeric characters and, when `n` is greater than 10, letters. For example, if `n` is 12, then `baseStr` represents the numbers 9, 10, and 11 using the characters `9`, `A`, and `B`, and represents the number 12 as the character sequence `10`. Letters can be either uppercase or lowercase.

• If `baseStr` is a character array with multiple rows or a cell array of character vectors, then the output is a numeric column vector.

• If `baseStr` is a string array, then the output is a numeric array that has the same dimensions.

`baseStr` cannot represent a negative number.

Base of input representation, specified as an integer between 2 and 36. For example, if `n` is 8, then `baseStr` represents base-8 numbers.

## Version History

Introduced before R2006a

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Behavior changed in R2020b