%%
%% This is file `l3skip.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% l3skip.dtx  (with options: `package,trace')
%% 
%% 
%% EXPERIMENTAL CODE
%% 
%% Do not distribute this file without also distributing the
%% source files specified above.
%% 
%% Do not distribute a modified version of this file.
%% 
%% 
%% File: l3skip.dtx Copyright (C) 2005-2007 Frank Mittelbach, LaTeX3 project
%%
%% It may be distributed and/or modified under the conditions of the
%% LaTeX Project Public License (LPPL), either version 1.3c of this
%% license or (at your option) any later version.  The latest version
%% of this license is in the file
%%
%%    http://www.latex-project.org/lppl.txt
%%
%% This file is part of the ``expl3 bundle'' (The Work in LPPL)
%% and all files in that bundle must be distributed together.
%%
%% The released version of this bundle is available from CTAN.
%%
%% -----------------------------------------------------------------------
%%
%% The development version of the bundle can be found at
%%
%%    http://www.latex-project.org/cgi-bin/cvsweb.cgi/
%%
%% for those people who are interested.
%%
%%%%%%%%%%%
%% NOTE: %%
%%%%%%%%%%%
%%
%%   Snapshots taken from the repository represent work in progress and may
%%   not work or may contain conflicting material!  We therefore ask
%%   people _not_ to put them into distributions, archives, etc. without
%%   prior consultation with the LaTeX Project Team.
%%
%% -----------------------------------------------------------------------
\RequirePackage{l3names}
\GetIdInfo$Id: l3skip.dtx 666 2007-09-27 15:53:26Z mittelba $
       {L3 Experimental skip registers}
\ProvidesExplPackage
  {\filename}{\filedate}{\fileversion}{\filedescription}
\RequirePackage{l3int}
\RequirePackage{l3prg}
\let:NN \skip_new:N \newskip
\def_new:Npn \skip_new:c {\exp_args:Nc \skip_new:N}
\def_new:Npn \skip_set:Nn #1#2{#1\skip_eval:n{#2}
}
\def_new:Npn \skip_gset:Nn {
 \pref_global:D
   \skip_set:Nn }
\def_new:Npn \skip_set:cn {\exp_args:Nc \skip_set:Nn }
\def_new:Npn \skip_gset:cn {\exp_args:Nc \skip_gset:Nn }
\def_new:Npn \skip_zero:N #1{#1\c_zero_skip \scan_stop:
}
\def_new:Npn \skip_gzero:N {
 \pref_global:D
   \skip_zero:N}
\def_new:Npn \skip_zero:c  {\exp_args:Nc \skip_zero:N}
\def_new:Npn \skip_gzero:c {\exp_args:Nc \skip_gzero:N}
\def_new:Npn \skip_add:Nn #1#2{
    \tex_advance:D#1 by \skip_eval:n{#2}
}
\def_new:Npn\skip_add:cn{\exp_args:Nc\skip_add:Nn}
\def_new:Npn \skip_sub:Nn #1#2{
    \tex_advance:D#1-\skip_eval:n{#2}
}
\def_new:Npn \skip_gadd:Nn {
 \pref_global:D
   \skip_add:Nn }
\def_new:Npn \skip_gsub:Nn {
 \pref_global:D
   \skip_sub:Nn }
\let_new:NN \skip_horizontal:N \tex_hskip:D
\def_new:Npn \skip_horizontal:c {\exp_args:Nc\skip_horizontal:N}
\def_new:Npn \skip_horizontal:n #1{\skip_horizontal:N \skip_eval:n{#1}}
\let_new:NN \skip_vertical:N \tex_vskip:D
\def_new:Npn \skip_vertital:c {\exp_args:Nc\skip_vertical:N}
\def_new:Npn \skip_vertical:n #1{\skip_vertical:N \skip_eval:n{#1}}
\let_new:NN \skip_use:N \tex_the:D
\def_new:Npn \skip_use:c #1{\exp_args:Nc\skip_use:N}
\def_new:Npn \skip_eval:n #1 {\etex_glueexpr:D #1 \scan_stop:}
%%\chk_new_cs:N \l_tmpa_skip
%%\tex_skipdef:D\l_tmpa_skip 255  %currently taken up by \skip@
\skip_new:N \l_tmpa_skip
\skip_new:N \l_tmpb_skip
\skip_new:N \l_tmpc_skip
\skip_new:N \g_tmpa_skip
\skip_new:N \g_tmpb_skip
\let:NN \c_zero_skip \z@
\let:NN \c_max_skip  \maxdimen
\def_new:Npn \skip_infinite_glue:nTF #1{
  \predicate:nTF {
      \int_compare_p:nNn {\etex_gluestretchorder:D #1 } > \c_zero ||
      \int_compare_p:nNn {\etex_glueshrinkorder:D #1 }  > \c_zero
  }
}
\def_new:Npn \skip_split_finite_else_action:nnNN #1#2#3#4{
  \skip_infinite_glue:nTF {#1}
  {
    #3 = \c_zero_skip
    #4 = \c_zero_skip
    #2
  }
  {
    #3 = \etex_gluestretch:D #1 \scan_stop:
    #4 = \etex_glueshrink:D  #1 \scan_stop:
  }
}
\let:NN \dim_new:N \newdimen
\def_new:Npn \dim_new:c {\exp_args:Nc \dim_new:N}
\def_new:Npn \dim_set:Nn #1#2{#1~ \dim_eval:n{#2}}
\def_new:Npn \dim_gset:Nn {\pref_global:D \dim_set:Nn }
\def_new:Npn \dim_set:cn {\exp_args:Nc \dim_set:Nn }
\def_new:Npn \dim_set:Nc {\exp_args:NNc \dim_set:Nn }
\def_new:Npn \dim_gset:cn {\exp_args:Nc \dim_gset:Nn }
\def_new:Npn \dim_gset:Nc {\exp_args:NNc \dim_gset:Nn }
\def_new:Npn \dim_gset:cc {\exp_args:Ncc \dim_gset:Nn }
\def_new:Npn \dim_zero:N #1{#1\c_zero_skip}
\def_new:Npn \dim_gzero:N {\pref_global:D \dim_zero:N}
\def_new:Npn \dim_zero:c  {\exp_args:Nc \dim_zero:N}
\def_new:Npn \dim_gzero:c {\exp_args:Nc \dim_gzero:N}
\def_new:Npn \dim_add:Nn #1#2{
    \tex_advance:D#1 by \dim_eval:n{#2}\scan_stop:
}
\def_new:Npn\dim_add:cn{\exp_args:Nc\dim_add:Nn}
\def_new:Npn\dim_add:Nc{\exp_args:NNc\dim_add:Nn}
\def_new:Npn \dim_gadd:Nn { \pref_global:D \dim_add:Nn }
\def_new:Npn\dim_gadd:cn{\exp_args:Nc\dim_gadd:Nn}
\def_new:Npn \dim_sub:Nn #1#2{\tex_advance:D#1-#2\scan_stop:}
\def_new:Npn\dim_sub:cn{\exp_args:Nc\dim_sub:Nn}
\def_new:Npn\dim_sub:Nc{\exp_args:NNc\dim_sub:Nn}
\def_new:Npn \dim_gsub:Nn {\pref_global:D \dim_sub:Nn }
\def_new:Npn\dim_gsub:cn{\exp_args:Nc\dim_gsub:Nn}
\let_new:NN \dim_use:N \tex_the:D
\def_new:Npn \dim_use:c {\exp_args:Nc\dim_use:N}
\dim_new:N \l_tmpa_dim
\dim_new:N \l_tmpb_dim
\dim_new:N \l_tmpc_dim
\dim_new:N \l_tmpd_dim
\dim_new:N \g_tmpa_dim
\dim_new:N \g_tmpb_dim
\let_new:NN \c_zero_dim \c_zero_skip
\let_new:NN \c_max_dim \c_max_skip
\def_new:Npn \dim_eval:n #1 {\etex_dimexpr:D #1 \scan_stop:}
\let_new:NN \if_dim:w \tex_ifdim:D
\def_new:Npn \dim_compare:nNnTF #1#2#3{
  \if_dim:w \dim_eval:n {#1} #2 \dim_eval:n {#3}
    \exp_after:NN \use_arg_i:nn
  \else:
    \exp_after:NN \use_arg_ii:nn
  \fi:
}
\def_new:Npn \dim_compare:nNnT #1#2#3{
  \if_dim:w \dim_eval:n {#1} #2 \dim_eval:n {#3}
    \exp_after:NN \use_arg_ii:nn
  \fi:
  \use_none:n
}
\def_new:Npn \dim_compare:nNnF #1#2#3{
  \if_dim:w \dim_eval:n {#1} #2 \dim_eval:n {#3}
    \exp_after:NN \use_none:n
  \else:
    \exp_after:NN \use_arg_i:n
  \fi:
}
\def_new:Npn \dim_compare_p:nNn #1#2#3{
  \if_dim:w \dim_eval:n {#1} #2 \dim_eval:n {#3}
    \c_true
  \else:
    \c_false
  \fi:
}
\def_new:Npn \dim_while:nNnT #1#2#3#4{
  \dim_compare:nNnT {#1}#2{#3}{#4 \dim_while:nNnT {#1}#2{#3}{#4}}
}
\def_new:Npn \dim_while:nNnF #1#2#3#4{
  \dim_compare:nNnF {#1}#2{#3}{#4 \dim_while:nNnF {#1}#2{#3}{#4}}
}
\def_new:Npn \dim_dowhile:nNnT #1#2#3#4{
  #4 \dim_compare:nNnT {#1}#2{#3}{\dim_dowhile:nNnT {#1}#2{#3}{#4}}
}
\def_new:Npn \dim_dowhile:nNnF #1#2#3#4{
  #4 \dim_compare:nNnF {#1}#2{#3}{\dim_dowhile:nNnF {#1}#2{#3}{#4}}
}
\let_new:NN \muskip_new:N \newmuskip     % nicked from LaTeX
\def_new:Npn \muskip_set:Nn#1#2{#1\etex_muexpr:D#2\scan_stop:}
\def_new:Npn \muskip_gset:Nn{\pref_global:D\muskip_set:Nn}
\def_new:Npn \muskip_add:Nn#1#2{\tex_advance:D#1\etex_muexpr:D#2\scan_stop:}
\def_new:Npn \muskip_gadd:Nn{\pref_global:D\muskip_add:Nn}
\def_new:Npn \muskip_sub:Nn#1#2{\tex_advance:D#1-\etex_muexpr:D#2\scan_stop:}
\def_new:Npn \muskip_gsub:Nn{\pref_global:D\muskip_sub:Nn}
%% 
%%
%% End of file `l3skip.sty'.
