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%%
%% This is file `phy-diagmat.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% physics2-code.dtx  (with options: `diagmat')
%% 
%%   Copyright (C) 2023 by Zhang Tingxuan <alphaztx@163.com>
%% 
%%   This work may be distributed and/or modified under the
%%   conditions of the LaTeX Project Public License, either
%%   version 1.3c of this license or (at your option) any later
%%   version. The latest version of this license is in:
%% 
%%     http://www.latex-project.org/lppl.txt
%% 
%%   and version 1.3 or later is part of all distributions of
%%   LaTeX version 2005/12/01 or later.
%% 
%%   This work has the LPPL maintenance status `maintained'.
%% 
%%   The Current Maintainer of this work is Zhang Tingxuan.
%% 
%%   This work consists of the files physics2-code.dtx,
%%             and the derived files physics2.ins,
%%                                   physics2.sty,
%%                                   phy-<module>.sty,
%%                                   physics2-code.pdf,
%%                               and README.md.
%% 
\ProvidesExplFile{phy-diagmat.sty}{2023/10/24}{}
  {`diagmat' module of physics2}
\RequirePackage { amsmath }
\phy@define@key { diagmat } { empty } [ 0 ] { \tl_gset:Nn \l__phy_mat_empty_tl { #1 } }
\clist_new:N \l__phy_mat_diag_clist
\clist_new:N \l__phy_mat_tmpa_clist
\clist_new:N \l__phy_mat_tmpb_clist
\clist_new:N \l__phy_mat_diagpos_clist
\int_new:N \l__phy_mat_dim_int
\tl_new:N \l__phy_mat_line_tl
\tl_new:N \l__phy_diagmat_tl
\tl_new:N \l__phy_mat_empty_tl
\tl_gset:Nn \l__phy_mat_empty_tl { 0 }
\phy@processkeyopt { diagmat }
\keys_define:nn { phy/diagmat }
  {
    empty .tl_set:N = \l__phy_mat_empty_tl ,
  }
\DeclareDocumentCommand \diagmat { O{} m }
  { \__phy_diagmat_type:nnn { } { #1 } { #2 } }
\DeclareDocumentCommand \pdiagmat { O{} m }
  { \__phy_diagmat_type:nnn { p } { #1 } { #2 } }
\DeclareDocumentCommand \bdiagmat { O{} m }
  { \__phy_diagmat_type:nnn { b } { #1 } { #2 } }
\DeclareDocumentCommand \Bdiagmat { O{} m }
  { \__phy_diagmat_type:nnn { B } { #1 } { #2 } }
\DeclareDocumentCommand \vdiagmat { O{} m }
  { \__phy_diagmat_type:nnn { v } { #1 } { #2 } }
\DeclareDocumentCommand \Vdiagmat { O{} m }
  { \__phy_diagmat_type:nnn { V } { #1 } { #2 } }
\cs_new:Npn \__phy_diagmat_type:nnn #1#2#3
  {
    \group_begin:
    \clist_set:Nn \l__phy_mat_diag_clist { #3 }
    \int_set:Nn \l__phy_mat_dim_int { \clist_count:N \l__phy_mat_diag_clist }
    \int_compare:nNnT { \l__phy_mat_dim_int } > { \value { MaxMatrixCols } }
      { \setcounter { MaxMatrixCols } { \l__phy_mat_dim_int } }
    \keys_set:nn { phy/diagmat } { #2 }
    \tl_gclear:N \l__phy_diagmat_tl
    \int_step_inline:nnn { 0 } { \l__phy_mat_dim_int - 1 }
      {
        \int_step_inline:nnn { 0 } { \l__phy_mat_dim_int - 1 }
          {
            \int_compare:nNnTF { ##1 } = { ####1 }
              {
                \clist_gpop:NN \l__phy_mat_diag_clist \l__phy_tmpa_tl
                \tl_if_empty:NTF \l__phy_tmpa_tl
                  { \tl_gput_right:Nn \l__phy_mat_line_tl { \l__phy_mat_empty_tl } }
                  { \tl_gput_right:Nx \l__phy_mat_line_tl { \l__phy_tmpa_tl } }
              }
              { \tl_gput_right:Nn \l__phy_mat_line_tl { \l__phy_mat_empty_tl } }
            \int_compare:nNnTF { ####1 } = { \l__phy_mat_dim_int - 1 }
              {
                \tl_gput_right:Nn \l__phy_mat_line_tl { \\ }
              }
              {
                \tl_gput_right:Nn \l__phy_mat_line_tl { & }
              }
          }
        \tl_gput_right:Nx \l__phy_diagmat_tl { \l__phy_mat_line_tl }
        \tl_gclear:N \l__phy_mat_line_tl
      }
    \begin { #1 matrix }
      \tl_use:N \l__phy_diagmat_tl
    \end { #1 matrix }
    \group_end:
  }
\endinput
%%
%% End of file `phy-diagmat.sty'.