pcalc Code
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PCALC
Programmer's calculator, command line utility.
There was always a loophole when it came to a need to covert between
hexadecimal / decimal / octal / binary.
Especially if it involved an operation like 0x1234 + 0x20
It took a lot of hard work, and mostly a good pocket calculator.
Main features:
o Full math parser, parentheses, add, sub, mult, div, exponential
o Automatic conversion between HEX DEC OCT BIN numbers
o Mixing different bases in one expression
o Definable variables
o Math constants (E PI ...)
o Built in math functions (sin/cos/sqrt ...)
Specification:
Number specification:
0x1234 hexadecimal
0X1234 hexadecimal
01234 octal
0o1234 octal
0c1234 octal
0b0101 binary
0y0101 binary
123456 decimal
Numbers may have underscores in them as seprators for visibility.
0xFFFF_0000 0o777_555 0b1111_0000 12_34_56_78
Decimal numbers may also have commas in them.
1,100,234
Built in functions:
sin mathematical sinus
cos mathematical cos
atan mathematical atan
log mathematical log
log10 mathematical log10
exp mathematical exp
sqrt mathematical sqrt
int mathematical int
abs mathematical abs
f2c converting temperature-> fahrenheit to celsius
c2f converting temperature-> celsius to fahrenheit
in2mm converting length-> inches to millimeter
mm2in converting length-> millimeter to inches
po2kg converting mass-> pounds to kilogram
kg2po converting mass-> kilogram to pounds
Built in controls:
echo echo to the screen
_echo echo to the screen, no new line
date echo to the screen, expanding date variables
store store variable to file
restore restore viable from file
Built in variables:
DEBUG for debug 0=off 1=on
DEC controlling number display 0=default 1=dec 2=hex 3=bin 4=oct
Operator priorities:
LOW '=' assignment
or binary or
and binary and
'>' '<' binary left/right shift
'+' '-' addition/subtraction
'*' '/' '%' multiply/divide/modulus
'-' unary minus
HIGH '^' exponentiation
Syntax:
pcalc var
pcalc expr
pcalc number
pcalc var = number
pcalc builtin expr
pcalc builtin ( expr )
pcalc date "string"
pcalc echo "string"
pcalc _echo "string"
pcalc store var
pcalc store var to "file"
pcalc restore var
pcalc restore var from "file"
The result is output in 3 parts:
DEC number HEX number BIN number
20 0x14 0y10100
If the number is out of range from the HEX and BIN numbers, the
truncated numbers are displayed.
Examples:
(see also the ./ptest directory)
--------------------------------------------------------------------------
c:>pcalc 0x300
768 0x300 0y1100000000
--------------------------------------------------------------------------
c:>pcalc '0x300 + 3 * 3'
777 0x309 0y1100001001
Note: shell expansion on the '*' char required the single quote
--------------------------------------------------------------------------
c:>pcalc sqrt 2
1.4142136 0x1 0y1
--------------------------------------------------------------------------
c:>pcalc sqrt(2)
1.4142136 0x1 0y1
--------------------------------------------------------------------------
c:>pcalc 0x12 or 23
23 0x17 0y10111
--------------------------------------------------------------------------
To execute a calculation script from a file, precede the file name with the
character '@'.
Example:
pcalc @pcalc.001
Dirty:
This project was constructed in a 'quick and dirty' schedule, please
forgive missing parts etc ...
Feedback:
Please send email about updates/ports/suggestions to
https://github.com/vapier/pcalc/issues
