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Math
====
In this section, we will have many funcions of mathematics operations that help us in everyday life.
They are not complex to assemble in bash, however, nothing better than a small function to assist, nothing better that send data and get or return result, always read the code.
bh_bin2dec
----------
This function expects a binary and return its equivalent in decimal.
.. note::
Usage
``bh_bin2dec`` [binary]
binary : string in binary format.
.. code-block:: bash
$ bh_bin2dec 11111111
255
$ bh_bin2dec 10
2
$ bh_bin2dec 1110
14
bh_charcalc
-----------
Think of a way to make operations with 'char', how to sum two positions for a 'char/string' and return letter c or sum of the other and multiply it by 10 and returns 10
.. note::
Usage
``bh_charcalc`` [char/string] [operator] [number]
char/string : string or char to operation
operator : \* + -
number : num of operation
.. code-block:: bash
$ bh_charcalc A + 2
C
$ bh_charcalc A \* 255
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.......
bh_dec2bin
----------
Opossed to ``bh_bin2dec`` this function expects a decimal for converting it into binary.
.. note::
Usage
``bh_dec2bin`` [decimal]
decimal : number in decimal format.
.. code-block:: bash
$ bh_dec2bin 255
11111111
$ bh_dec2bin 2
10
$ bh_dec2bin 14
1110
#Example
$ for dec in {1..6};
do
echo "$dec = $(bh_dec2bin $dec)";
done
1 = 1
2 = 10
3 = 11
4 = 100
5 = 101
6 = 110
bh_dec2hex
----------
The function expects a input a decimal number it performs the conversion to hex.
.. note::
Usage
``bh_dec2hex`` [decimal]
decimal: number in decimal format
.. code-block:: bash
$ bh_dec2hex 10
a
$ bh_dec2hex 255
ff
bh_hex2bin
----------
Capture all submitted arguments and convert to binary
.. note::
Usage
``bh_hex2bin`` [list or one hex digit]
.. code-block:: bash
$ bh_hex2bin abcdef 1 2 3
101010111100110111101111 1 10 11
$ bh_hex2bin 10
10000
bh_hex2dec
----------
This's a conversion function from hex digit to decimal digit
.. note::
Usage
``bh_hex2dec`` [one or more hex digit]
.. code-block:: bash
$ bh_hex2dec A
10
$ bh_hex2dec FF
255
bh_hexcalc
----------
In the same way as ``bh_charcalc``, however, work here with hexdigit.
.. note::
Usage
``bh_hex2cal`` [hex digit] [operator] [hex digit]
.. code-block:: bash
$ bh_hex2dec A \* 2
0xa0
$ bh_hex2bin FF + 1
0x100
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