Elixir v0.12.4 → Overview → Float

Float

Functions for working with floating point numbers.

Source

Summary
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ceil(num)

Round a float to the largest integer greater than or equal to num
floor(num)

Round a float to the largest integer less than or equal to num
parse(binary)

Parses a binary into a float
round(number, precision)

Rounds a floating point value to an arbitrary number of fractional digits (between 0 and 15)

Functions

ceil(num)
(function) # ↑

Specs:

  • ceil(float | integer) :: integer

Round a float to the largest integer greater than or equal to num

Examples

iex> Float.ceil(34)
34
iex> Float.ceil(34.25)
35
iex> Float.ceil(-56.5)
-56
Source
floor(num)
(function) # ↑

Specs:

  • floor(float | integer) :: integer

Round a float to the largest integer less than or equal to num

Examples

iex> Float.floor(34)
34
iex> Float.floor(34.25)
34
iex> Float.floor(-56.5)
-57
Source
parse(binary)
(function) # ↑

Specs:

  • parse(binary) :: {float, binary} | :error

Parses a binary into a float.

If successful, returns a tuple of the form { float, remainder_of_binary }. Otherwise :error.

Examples

iex> Float.parse("34")
{34.0,""}
iex> Float.parse("34.25")
{34.25,""}
iex> Float.parse("56.5xyz")
{56.5,"xyz"}
iex> Float.parse("pi")
:error
Source
round(number, precision)
(function) # ↑

Specs:

  • round(float, integer) :: float

Rounds a floating point value to an arbitrary number of fractional digits (between 0 and 15).

Examples

iex> Float.round(5.5674, 3)
5.567
iex> Float.round(5.5675, 3)
5.568
iex> Float.round(-5.5674, 3)
-5.567
iex> Float.round(-5.5675, 3)
-5.568
Source