How to Get Digits Past Decimal In Elixir?

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:

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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.

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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:

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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:

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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:

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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:

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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.