A set of macros that perform calculations on bits.
The macros in this module come in two flavors: named or operators. For example:
iex> use Bitwise
iex> bnot 1 # named
-2
iex> 1 &&& 1 # operator
1
If you prefer to use only operators or skip them, you can pass the following options:
:only_operators
- includes only operators :skip_operators
- skips operators For example:
iex> use Bitwise, only_operators: true
iex> 1 &&& 1
1
When invoked with no options, use Bitwise
is equivalent to import Bitwise
.
All bitwise macros can be used in guards:
iex> use Bitwise
iex> odd? = fn int when band(int, 1) == 1 -> true; _ -> false end
iex> odd?.(1)
true
Infix operator; calculates the bitwise AND of its arguments
Infix operator; calculates the result of an arithmetic left bitshift
Infix operator; calculates the result of an arithmetic right bitshift
Infix operator; calculates the bitwise XOR of its arguments
Calculates the bitwise AND of its arguments
Calculates the bitwise NOT of its argument
Calculates the bitwise OR of its arguments
Calculates the result of an arithmetic left bitshift
Calculates the result of an arithmetic right bitshift
Calculates the bitwise XOR of its arguments
Infix operator; calculates the bitwise OR of its arguments
Prefix (unary) operator; calculates the bitwise NOT of its argument
Infix operator; calculates the bitwise AND of its arguments.
iex> 9 &&& 3
1
Infix operator; calculates the result of an arithmetic left bitshift.
iex> 1 <<< 2
4
iex> 1 <<< -2
0
iex> -1 <<< 2
-4
iex> -1 <<< -2
-1
Infix operator; calculates the result of an arithmetic right bitshift.
iex> 1 >>> 2
0
iex> 1 >>> -2
4
iex> -1 >>> 2
-1
iex> -1 >>> -2
-4
Infix operator; calculates the bitwise XOR of its arguments.
iex> 9 ^^^ 3
10
Calculates the bitwise AND of its arguments.
iex> band(9, 3)
1
Calculates the bitwise NOT of its argument.
iex> bnot(2)
-3
iex> bnot(2) &&& 3
1
Calculates the bitwise OR of its arguments.
iex> bor(9, 3)
11
Calculates the result of an arithmetic left bitshift.
iex> bsl(1, 2)
4
iex> bsl(1, -2)
0
iex> bsl(-1, 2)
-4
iex> bsl(-1, -2)
-1
Calculates the result of an arithmetic right bitshift.
iex> bsr(1, 2)
0
iex> bsr(1, -2)
4
iex> bsr(-1, 2)
-1
iex> bsr(-1, -2)
-4
Calculates the bitwise XOR of its arguments.
iex> bxor(9, 3)
10
Infix operator; calculates the bitwise OR of its arguments.
iex> 9 ||| 3
11
Prefix (unary) operator; calculates the bitwise NOT of its argument.
iex> ~~~2
-3
iex> ~~~2 &&& 3
1
© 2012–2017 Plataformatec
Licensed under the Apache License, Version 2.0.
https://hexdocs.pm/elixir/1.4.1/Bitwise.html