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.TH "HCALC" 1 "2024-01-03" "1.2u1" "Urchlay's Misc Stuff"
.SH NAME
hcalc \- graphical hex calculator
.\" RST source for hcalc(1) man page. Convert with:
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.\" rst2man.py hcalc.rst > hcalc.1
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.SH SYNOPSIS
.sp
hcalc [\fI\-default\fP] [\fI\-small\fP | \fI\-medium\fP | \fI\-large\fP] [\fI\-dec\fP | \fI\-hex\fP | \fI\-oct\fP | \fI\-bin\fP ] [\fI\-quiet\fP] [\fI\-\-version\fP] [\fI\-\-help\fP]
.SH DESCRIPTION
.sp
\fBhcalc\fP is a small (137x174 pixels minimum) TI Programmer II
semi\-clone for Unix/X11 and Windows 95/NT. It doesn\(aqt take up much
space, and supports decimal, hex, binary, and octal modes.
.sp
\fBhcalc\fP is operated with the mouse and/or keyboard. See \fBMOUSE\fP and
\fBKEYBOARD\fP sections, below.
.SH OPTIONS
.sp
Options listed as (persistent) get saved to the config file, so
they\(aqll still apply the next time \fBhcalc\fP is started. This applies
not only to command\-line arguments; the settings get saved if they\(aqre
changed via the mouse or keyboard, too.
.INDENT 0.0
.TP
.B \fB\-small\fP
Display in a 125x147 window (persistent).
.TP
.B \fB\-medium\fP
Display in a 250x294 window (persistent).
.TP
.B \fB\-large\fP
Display in a 500x588 window (persistent). This is the default.
.TP
.B \fB\-dec\fP
Start up in decimal mode (persistent). This is the default.
.TP
.B \fB\-hex\fP
Start up in hexadecimal mode (persistent).
.TP
.B \fB\-oct\fP
Start up in octal mode (persistent).
.TP
.B \fB\-bin\fP
Start up in binary mode (persistent).
.TP
.B \fB\-default\fP
Do not read the config file on startup. \fINOTE:\fP This option must
be the first on the command line, or it will be ignored!
.TP
.B \fB\-quiet\fP
Do not ring the X bell on invalid input (persistent).
.UNINDENT
.INDENT 0.0
.TP
.B  \-\-version
Output version number and exit.
.TP
.B  \-\-help
Output usage string and exit.
.UNINDENT
.SH DISPLAY
.sp
The numeric display is limited to 15 digits in decimal, hex, or octal
base. In binary mode, it displays 32 bits, but uses narrow "ticks"
rather than 0 and 1.
.sp
In hex mode, the number in the display will always be prefixed with
"0x". In octal mode, it will always be prefixed with "0". In decimal
mode, there is no prefix.
.sp
In case of error (e.g. division by zero), the display will show a
lowercase "f" in decimal mode, or only the prefix in hex or octal
mode, or all 0 bits in binary mode. When this happens, you may have to
press \fBCLR\fP or \fBEscape\fP to recover.
.SH MOUSE
.sp
Mouse operation is simple: for the most part, just click on the
buttons to press them.
.sp
There\(aqs no \fI%\fP button for the modulus operator, but you can
right\-click on the \fI÷\fP (division) key.
.sp
Right\-clicking (or any button other than 1) on the \fICLR\fP key exits
\fBhcalc\fP\&.
.sp
For the numeric display, clicking button 1 (usually the left one)
copies the number to the X selection buffer. Clicking any other
button pastes from X, but beware: pasting anything but a number in
the current base might have unexpected effects, because all pasted
characters are treated as keystrokes (so, e.g. pasting a capital Q
quits the application). This can be useful, e.g. if you paste "2+2=",
\fBhcalc\fP will display "4".
.SH KEYBOARD
.INDENT 0.0
.TP
.B \fB0\-9\fP, \fBa\-f\fP
Digits. Lowercase only for the hex digits. Entering digits
larger than the current number base is impossible (e.g. hex digits
when in decimal mode, or digits other than 0 or 1 in binary mode) and
will be ignored.
.TP
.B \fB+\fP \fB\-\fP \fB*\fP \fBx\fP \fB/\fP \fB%\fP
Arithmetic: addition, subtraction, multiplication, division, modulus. Note that
\fBx\fP is the same as \fB*\fP\&.
.TP
.B \fB\&.\fP
Decimal point. Only works in decimal mode (base 10); other bases
are integer\-only.
.TP
.B \fB_\fP \fBi\fP
Invert sign. The \fI+/\-\fP key.
.TP
.B \fB=\fP \fBEnter\fP
The \fI=\fP key (equals).
.TP
.B \fB&\fP \fB|\fP \fB^\fP \fB~\fP
Boolean operations. AND, OR, XOR, NOT (unary).
.TP
.B \fB<\fP \fB>\fP
Bit shifts, unary. Left 1 bit, right 1 bit.
.TP
.B \fBS\fP
\fISHF\fP key: shift left/right by some number of bits (binary
operation, like addition). Shifts left for positive
numbers and right for negative. This is less confusing
than it sounds: 1 shifted left once is 2, \-1 shifted right
once in \-2.
.TP
.B \fBBackspace\fP \fBDelete\fP
\fIDEL\fP key: delete the rightmost digit.
.TP
.B \fBC\fP \fBEscape\fP
\fICLR\fP key: clears the number.
.TP
.B \fBD\fP \fBH\fP \fBO\fP \fBB\fP
Set the number base to decimal, hex, octal, or binary. The
number currently displayed is converted into the new base.
These are capital letters (hold down Shift).
.TP
.B \fBF1\fP \fBF2\fP \fBF3\fP \fBF4\fP
Same as \fBD\fP \fBH\fP \fBO\fP \fBB\fP\&.
.TP
.B \fB[\fP \fB]\fP \fB}\fP
\fISTO\fP (store number), \fIRCL\fP (recall stored number), \fISUM\fP
(add current number to stored number). \fISTO\fP, \fIRCL\fP, and \fISUM\fP are
the same as \fIM\fP, \fIMR\fP, and \fIM+\fP on \(aqpocket\(aq calculators.
.TP
.B \fB^C\fP
Copy the current number to the X selection
buffer. Same as clicking mouse button 1 (usually left) on the number.
.TP
.B \fB^V\fP
Paste from the X selection buffer.
Same as clicking a mouse button other than 1 (right\-clicking) on the number.
.TP
.B \fBq\fP
Quiet. Toggles the audible bell.
.TP
.B \fBQ\fP \fB^Q\fP
Quit \fBhcalc\fP\&. Capital letter, so press Shift. Control\-Q does
the same thing.
.TP
.B \fBz\fP
Zoom: change window size. Alternates between the 3 sizes: \fB\-small\fP,
\fB\-medium\fP, \fB\-large\fP\&.
.UNINDENT
.\" other sections we might want, uncomment as needed.
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.SH FILES
.INDENT 0.0
.TP
.B \fB$HOME/.hcalc.cfg\fP
Config file. This is a binary file, not human\-readable, and not
portable across architectures. It gets read on startup (unless
\fB\-default\fP is given) and written on exit. It stores the
number base, window size (as set on the command line),
the number that was displayed on exit, the contents of the
\fISTO\fP memory, and the \fB\-quiet\fP flag.
.sp
Some care is taken to make sure a config file from a different
architecture won\(aqt be used.
.sp
Since the config file isn\(aqt human\-readable, an easy way to
create one is to run \fBhcalc\fP with \fB\-default\fP plus your preferred
options. Example:
.INDENT 7.0
.INDENT 3.5
.sp
.nf
.ft C
hcalc \-default \-quiet \-large \-hex
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
\&...which will kill any existing config file, and create a new one
that stores the options you gave. Now when you run \fBhcalc\fP with
no options, it will start up in hex mode, in a large window, and won\(aqt
ring the bell.
.sp
An even easier way is just to run \fBhcalc\fP and use the controls to
set the number base, size, and quiet flag. These settings automatically
get saved to the config file.
.UNINDENT
.SH ENVIRONMENT
.INDENT 0.0
.TP
.B \fBHOME\fP
Config file is searched for here. If this is not set, or can\(aqt be
read, no config file will be read or written.
.TP
.B \fBDISPLAY\fP
X display to use.
.UNINDENT
.\" EXIT STATUS
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.\" ===========
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.\" BUGS
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.\" ====
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.\" EXAMPLES
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.\" ========
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.SH COPYRIGHT
.sp
\fBhcalc\fP is released under the terms of the GNU GPL.
.SH AUTHORS
.sp
\fBhcalc\fP was originally written by DJ Delorie, modified by
Theodore Kilgore, and modified again by B. Watson, who also
wrote this man page.
.SH SEE ALSO
.sp
\fBxcalc\fP(1)
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