What is the LaTeX command for boxing a number like for example 123 as:
|1|2|3|
I have seen it in a book but can't find it anywhere in TeXnicCenter, which I use.
[Tex/LaTex] How to box every digit of an integer
formatting
Related Solutions
A solution that optionally does conversion of the input given in decimal form; I can think to other improvements.
\documentclass{article}
\usepackage{xparse}
\ExplSyntaxOn
\NewDocumentCommand{\printnumber}{O{}m}
{
\group_begin:
\keys_set:nn { lauhub/printnumber } { #1 }
\lauhub_print_number:n { #2 }
\group_end:
}
\tl_new:N \l_lauhub_number_tl
\tl_new:N \l_lauhub_output_tl
\int_new:N \l__lauhub_temp_int
\keys_define:nn { lauhub/printnumber }
{
padding .int_set:N = \l_lauhub_length_int,
padding .initial:n = 0,
radix .int_set:N = \l_lauhub_radix_int,
radix .initial:n = 10,
grouping .int_set:N = \l_lauhub_grouping_int,
grouping .initial:n = 3,
convert .bool_set:N = \l_lauhub_convert_bool,
convert .default:n = true,
convert .initial:n = false,
}
\cs_new_protected:Npn \lauhub_print_number:n #1
{
\tl_clear:N \l_lauhub_output_tl
\bool_if:NTF \l_lauhub_convert_bool
{
\tl_set:Nx \l_lauhub_number_tl { \int_to_Base:nn { #1 } { \l_lauhub_radix_int } }
}
{
\tl_set:Nn \l_lauhub_number_tl { #1 }
}
\prg_replicate:nn { \l_lauhub_length_int - \tl_count:N \l_lauhub_number_tl }
{
\tl_put_left:Nn \l_lauhub_number_tl { 0 }
}
\int_zero:N \l__lauhub_temp_int
\tl_map_inline:Nn \l_lauhub_number_tl
{
\tl_put_right:Nn \l_lauhub_output_tl { ##1 }
\int_incr:N \l__lauhub_temp_int
\bool_if:nT
{
\int_compare_p:n
{
\int_mod:nn { \l__lauhub_temp_int } { \l_lauhub_grouping_int } == 0
}
&&
\int_compare_p:n
{
\l__lauhub_temp_int < \l_lauhub_length_int
}
}
{
\tl_put_right:Nn \l_lauhub_output_tl { \, }
}
}
\ensuremath
{
\mathrm{ \tl_use:N \l_lauhub_output_tl } \sb { ( \int_to_arabic:n { \l_lauhub_radix_int } ) }
}
}
\ExplSyntaxOff
\begin{document}
\printnumber[padding=16,grouping=4,radix=2]{10000001}
\printnumber[padding=16,grouping=4,radix=2,convert]{129}
\printnumber[padding=8,grouping=2,radix=16]{FDE8}
\printnumber[padding=8,grouping=2,radix=16,convert]{65000}
\end{document}
After setting the options, the input (possibly converted to the requested base) is padded to the left with zeroes. Then the token list is mapped: when the number of steps is a multiple of the value in grouping a thin space is added (except at the last step).
Best Answer
I don't know any packages that provide macros for this, but it can be done easy enough:
See also Good way to make \textcircled numbers? for some tips about the formatting of the digits. However it's actual for circles not boxes.