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%%^^A%% um-code-amsmath.dtx -- part of UNICODE-MATH <wspr.io/unicode-math>
%%^^A%% Compatibility with amsmath.
% \section{Compatibility with \pkg{amsmath}}
%
% \begin{macrocode}
%<*package>
% \end{macrocode}
%
% Since the mathcode of |`\-| is greater than eight bits, this piece of |\AtBeginDocument| code from \pkg{amsmath} dies if we try and set the maths font in the preamble:
% \begin{macrocode}
\tl_remove_once:Nn \@begindocumenthook
{
\mathchardef\std@minus\mathcode`\-\relax
\mathchardef\std@equal\mathcode`\=\relax
}
\AtBeginDocument
{
\Umathcharnumdef\std@minus\Umathcodenum`-
\Umathcharnumdef\std@equal\Umathcodenum`=
}
% \end{macrocode}
%
% \begin{macrocode}
\cs_set:Npn \@cdots {\mathinner{\unicodecdots}}
\cs_set_eq:NN \dotsb@ \cdots
% \end{macrocode}
% This isn't as clever as the \pkg{amsmath} definition but I think it works:
% \begin{macrocode}
%<*XE>
\def \resetMathstrut@
{%
\setbox\z@\hbox{$($}%)
\ht\Mathstrutbox@\ht\z@ \dp\Mathstrutbox@\dp\z@
}
% \end{macrocode}
% The |subarray| environment uses inappropriate font dimensions.
% \begin{macrocode}
\cs_set:Npn \subarray #1
{
\vcenter
\c_group_begin_token
\Let@
\restore@math@cr
\default@tag
\skip_set:Nn \baselineskip
{
\@@_stack_num_up:N \scriptstyle
+ \@@_stack_denom_down:N \scriptstyle
}
\lineskip \@@_stack_vgap:N \scriptstyle
\lineskiplimit \lineskip
\ialign
\c_group_begin_token
\token_if_eq_meaning:NNT c #1 { \hfil }
\c_math_toggle_token
\m@th
\scriptstyle
\c_parameter_token \c_parameter_token
\c_math_toggle_token
\hfil
\crcr
}
%</XE>
% \end{macrocode}
% The roots need a complete rework.
% \begin{macrocode}
%<*LU>
\cs_set_nopar:Npn \plainroot@ #1 \of #2
{
\bool_if:nTF
{
\@@_int_if_zero_p:n \uproot@ && \@@_int_if_zero_p:n \leftroot@
}
{
\Uroot \c_@@_radical_sqrt_tl { #1 } { #2 }
}
{
\hbox_set:Nn \rootbox
{
\c_math_toggle_token \m@th
\scriptscriptstyle { #1 }
\c_math_toggle_token
}
\mathchoice
{ \r@@@@t \displaystyle { #2 } }
{ \r@@@@t \textstyle { #2 } }
{ \r@@@@t \scriptstyle { #2 } }
{ \r@@@@t \scriptscriptstyle { #2 } }
}
\c_group_end_token
}
%</LU>
% \end{macrocode}
%
% \begin{macrocode}
\cs_set_nopar:Npn \r@@@@t #1 #2
%<*LU>
{
\hbox_set:Nn \l_tmpa_box
{
\c_math_toggle_token \m@th
#1 \mskip \uproot@ mu
\c_math_toggle_token
}
\Uroot \c_@@_radical_sqrt_tl
{
\box_move_up:nn { \box_wd:N \l_tmpa_box }
{
\hbox:n
{
\c_math_toggle_token \m@th
\mkern -\leftroot@ mu
\box_use:N \rootbox
\mkern \leftroot@ mu
\c_math_toggle_token
}
}
}
{ #2 }
}
%</LU>
%<*XE>
{
\hbox_set:Nn \l_tmpa_box
{
\c_math_toggle_token \m@th
#1 \sqrtsign { #2 }
\c_math_toggle_token
}
\hbox_set:Nn \l_tmpb_box
{
\c_math_toggle_token \m@th
#1 \mskip \uproot@ mu
\c_math_toggle_token
}
\mkern -\leftroot@ mu
\@@_mathstyle_scale:NnnN #1 { \kern } { \fontdimen 63 \g_@@_sqrt_font_cmd_tl } \g_@@_sqrt_font_cmd_tl
\box_move_up:nn
{
\box_wd:N \l_tmpb_box + (\box_ht:N \l_tmpa_box - \box_dp:N \l_tmpa_box)
* \number \fontdimen 65 \g_@@_sqrt_font_cmd_tl / 100
}
{ \box_use:N \rootbox }
\@@_mathstyle_scale:NnnN #1 { \kern } { \fontdimen 64 \g_@@_sqrt_font_cmd_tl } \g_@@_sqrt_font_cmd_tl
\mkern \leftroot@ mu
\box_use_drop:N \l_tmpa_box
}
%</XE>
% \end{macrocode}
%
% \begin{macrocode}
%</package>
% \end{macrocode}
\endinput
% /©
%
% ------------------------------------------------
% The UNICODE-MATH package <wspr.io/unicode-math>
% ------------------------------------------------
% This package is free software and may be redistributed and/or modified under
% the conditions of the LaTeX Project Public License, version 1.3c or higher
% (your choice): <http://www.latex-project.org/lppl/>.
% ------------------------------------------------
% Copyright 2006-2019 Will Robertson, LPPL "maintainer"
% Copyright 2010-2017 Philipp Stephani
% Copyright 2011-2017 Joseph Wright
% Copyright 2012-2015 Khaled Hosny
% ------------------------------------------------
%
% ©/
|
