Elixir Language Built-in types Numbers
Example
Elixir comes with integers and floating point numbers. An integer literal can be written in decimal, binary, octal and hexadecimal formats.
iex> x = 291
291
iex> x = 0b100100011
291
iex> x = 0o443
291
iex> x = 0x123
291
As Elixir uses bignum arithmetic, the range of integer is only limited by the available memory on the system.
Floating point numbers are double precision and follows IEEE-754 specification.
iex> x = 6.8
6.8
iex> x = 1.23e-11
1.23e-11
Note that Elixir also supports exponent form for floats.
iex> 1 + 1
2
iex> 1.0 + 1.0
2.0
First we added two integers numbers, and the result is an integer. Later we added two floating point numbers, and the result is a floating point number.
Dividing in Elixir always returns a floating point number:
iex> 10 / 2
5.0
In the same way, if you add, subtract or multiply an integer by a floating point number the result will be floating point:
iex> 40.0 + 2
42.0
iex> 10 - 5.0
5.0
iex> 3 * 3.0
9.0
For integer division, one can use the div/2 function:
iex> div(10, 2)
5
