To get digits past the decimal in Elixir, you can use the `Float.round/2`

function along with the `:precision`

option. This function rounds a float to a specified number of decimal places.

For example, if you have a float `number`

and you want to get the digits up to 2 decimal places, you can use the following code:

```
1
``` |
```
rounded_number = Float.round(number, 2)
``` |

This will round the `number`

to 2 decimal places and store it in the `rounded_number`

variable. You can adjust the precision value as needed to get the desired number of decimal places.

## How to get the integer part of a decimal number in Elixir?

You can get the integer part of a decimal number in Elixir by using the `div`

function. Here's an example:

1 2 3 4 |
decimal_number = 5.67 integer_part = div(decimal_number, 1) IO.puts integer_part # Output: 5 |

In this example, the `div`

function is used to divide the decimal number by 1, which effectively removes the decimal part and leaves only the integer part.

## How to convert decimal numbers to binary in Elixir?

Here's a simple implementation that converts a decimal number to binary in Elixir:

1 2 3 4 5 6 7 8 9 |
defmodule Converter do def decimal_to_binary(decimal) when is_integer(decimal) do decimal |> Integer.to_string(2) |> String.to_integer() end end Converter.decimal_to_binary(10) # Output: 1010 |

You can use the `Integer.to_string/2`

function to convert the decimal number to a binary string representation, and then use `String.to_integer/1`

to convert the binary string back to an integer.

You can then call the `decimal_to_binary`

function with the decimal number you want to convert to binary.

## How to multiply decimal numbers in Elixir?

To multiply decimal numbers in Elixir, you can use the `Kernel.*`

function. Here is an example:

1 2 3 4 5 |
num1 = Decimal.new("2.5") num2 = Decimal.new("1.5") result = Kernel.*(num1, num2) IO.puts(result) # Output: 3.75 |

In this example, we are using the `Decimal.new/1`

function to create decimal numbers from strings, and then using the `Kernel.*`

function to multiply the two decimal numbers together.

## How to convert decimal numbers to integers in Elixir?

To convert decimal numbers to integers in Elixir, you can use the `trunc/1`

, `round/1`

, or `floor/1`

functions from the `Float`

module. Here's an example using `trunc/1`

:

1 2 3 |
decimal_number = 5.6 integer_number = trunc(decimal_number) IO.inspect(integer_number) # Output: 5 |

You can also use `round/1`

to round the decimal number to the nearest integer, or `floor/1`

to round down to the nearest integer.