xalc 0.6.0

Xalc is a hexadecimal calculator for embedded systems programmers, implemented as a pre-processor for Python expressions, with a console interface based on IPython.

Features:

• Mixed calculations with hex, decimal, binary and binary prefix literals

• Support for undecorated hex literals. Ambiguous literals can be forced to hex by either prefixing or suffixing with ‘x’.

• Display in hex, decimal, binary (with bit position ruler) and binary prefixes (sizes)

• Simple bit mask construction

• Bit field extraction operator

• From IPython: Support for arbitrary Python expressions (minus the ones that conflict with the pre-processed syntax), command history, access to previous results with _* variables, etc.

The following “screenshot” demonstrates some of the features of Xalc. The real program displays the different bases in different colors, if your console supports that:

$ xalc
In [1]: deadbeef
0xdeadbeef
Out[1]:
3735928559    │  28─╮ 24─╮ 20─╮ 16─╮ 12─╮  8─╮  4─╮  0─╮
0xdeadbeef    │  1101 1110 1010 1101 1011 1110 1110 1111
3 Gi + 490 Mi + 879 Ki + 751

In [2]: deadbeef $ m5t13
0xdeadbeef >> 5 & ((0x3fe0) >> 5)
Out[2]:
 503           │  28─╮ 24─╮ 20─╮ 16─╮ 12─╮  8─╮  4─╮  0─╮
 0x000001f7    │  0000 0000 0000 0000 0000 0001 1111 0111

In [3]: _ ^ cafe
_ ^ 0xcafe
Out[3]:
 51977         │  28─╮ 24─╮ 20─╮ 16─╮ 12─╮  8─╮  4─╮  0─╮
 0x0000cb09    │  0000 0000 0000 0000 1100 1011 0000 1001
 50 Ki + 777

In [4]: 7f000000 - 35000000x
0x7f000000 - 0x35000000
Out[4]:
 1241513984    │  28─╮ 24─╮ 20─╮ 16─╮ 12─╮  8─╮  4─╮  0─╮
 0x4a000000    │  0100 1010 0000 0000 0000 0000 0000 0000
 1 Gi + 160 Mi

In [5]: m2p0_5_8t9_29_31t31
(0x3|0x20|0x300|0x20000000|0x80000000)
Out[5]:
 2684355363    │  28─╮ 24─╮ 20─╮ 16─╮ 12─╮  8─╮  4─╮  0─╮
 0xa0000323    │  1010 0000 0000 0000 0000 0011 0010 0011
 2 Gi + 512 Mi + 803

In [6]: 2g | m12
0x80000000 | (0x1000)
Out[6]:
 2147487744    │  28─╮ 24─╮ 20─╮ 16─╮ 12─╮  8─╮  4─╮  0─╮
 0x80001000    │  1000 0000 0000 0000 0001 0000 0000 0000
 2 Gi + 4 Ki

In [7]: -45
-45
Out[7]:
 -45           │  28─╮ 24─╮ 20─╮ 16─╮ 12─╮  8─╮  4─╮  0─╮
 0xffffffd3    │  1111 1111 1111 1111 1111 1111 1101 0011

Install with pip:

pip install --upgrade xalc

Or by cloning the git repo and running:

python setup.py install

Run xalc after installation.