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diff --git a/tex/context/base/strc-mat.mkii b/tex/context/base/strc-mat.mkii new file mode 100644 index 000000000..0d32cb298 --- /dev/null +++ b/tex/context/base/strc-mat.mkii @@ -0,0 +1,2925 @@ +%D \module +%D [ file=strc-mat, +%D version=2006.03.27, % 1998.12.07 +%D title=\CONTEXT\ Structure Macros, +%D subtitle=Math Fundamentals, +%D author={Hans Hagen, Taco Hoekwater \& Aditya Mahajan}, +%D date=\currentdate, +%D copyright=PRAGMA] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +% engels maken + +\writestatus{loading}{ConTeXt Structure Macros / Math Fundamentals} + +\unprotect + +% \startlines +% $\mathopnolimits{\rm d}x$ +% $\mathopnolimits{\kern\zeropoint \rm d}x$ +% $\puremathcomm{nolop}{\rm d}x$ +% $\puremathcomm{nolop}{\kern\zeropoint\rm d}x$ +% \blank +% $\puremathcomm{nolop}{\mr d}x$ +% $\puremathcomm{nolop}{\kern\zeropoint\mr d}x$ +% $\mathop{\kern\zeropoint\mr d}x$ +% $\mathopnolimits{\kern\zeropoint d}x$ +% \stoplines + +% \definemessageconstant{math} + +% % messages moved + +% \def\invalidmathcommand#1{\showmessage\m!math1{#1}} + +% \appendtoks +% \def\eqno {\invalidmathcommand{\string\eqno }}% +% \def\leqno{\invalidmathcommand{\string\leqno}}% +% \to \everydisplay + +% \appendtoks +% \let\eqno\normaleqno +% \let\leqno\normaleqno +% \to \everymath + +% \placeformula\startformula +% H(K|M,C) = H(K|C) - H(M|C)\eqno{\hbox{(\in{}[eq:keyapp])}} +% \stopformula + +\unexpanded\def\mathortext + {\ifmmode + \expandafter\firstoftwoarguments + \else + \expandafter\secondoftwoarguments + \fi} + +% \defineactivecharacter _ {\mathortext{_}{\_}} text_text $a^2$ + +% force text mode, will be overloaded later + +\ifx\text\undefined \let\text\hbox \fi + +\newdimen\lastlinewidth + +% does not work at all +% +% \def\setlastlinewidth +% {\resetlastlinewidth +% \ifmmode\else\ifhmode\else\ifoptimizedisplayspacing +% \bgroup +% \forgetdisplayskips +% $$\global\lastlinewidth\predisplaysize$$ +% \vskip-\baselineskip +% \egroup +% \fi\fi\fi} + +% test \par \dorecurse{10}{test } \moveformula \startformula test \stopformula test \endgraf +% test \par \dorecurse{10}{test } \startformula test \stopformula test \endgraf +% \dorecurse{30}{\bpar \dorecurse\recurselevel{test } \epar \startformula formula \stopformula} + +\def\setlastlinewidth + {\resetlastlinewidth + \ifoptimizedisplayspacing\ifmmode\else\ifhmode + \bgroup + \forgetdisplayskips + \displaywidowpenalty\widowpenalty % brrr, else widowpenalty does not work + \everymath \emptytoks + \everydisplay\emptytoks + $$\strut\global\lastlinewidth\predisplaysize$$ + \vskip-\lineheight + \vskip\zeropoint + \egroup + \fi\fi\fi} + +\def\resetlastlinewidth + {\global\lastlinewidth\zeropoint\relax} + +% not here: \appendtoks \setlastlinewidth \to \everyendofpar + +%D moved from main-001 + +%\def\EveryMathPar{\EveryPar} +% +%\newevery \everymath \EveryMath + +\abovedisplayskip = \zeropoint +\abovedisplayshortskip = \zeropoint % evt. 0pt minus 3pt +\belowdisplayskip = \zeropoint +\belowdisplayshortskip = \zeropoint % evt. 0pt minus 3pt + +\predisplaypenalty = \zerocount +\postdisplaypenalty = \zerocount % -5000 gaat mis, zie penalty bij \paragraaf + +% we don't use the skip's + +\def\displayskipsize#1#2% obsolete + {\ifdim\ctxparskip>\zeropoint + #1\ctxparskip\!!plus#2\ctxparskip\!!minus#2\ctxparskip\relax + \else + #1\lineheight\!!plus#2\lineheight\!!minus#2\lineheight\relax + \fi} + +\def\displayskipfactor {1.0} % obsolete +\def\displayshortskipfactor {0.8} % obsolete +\def\displayskipgluefactor {0.3} % obsolete +\def\displayshortskipgluefactor {0.2} % obsolete + +\def\abovedisplayskipsize% obsolete + {\displayskipsize\displayskipfactor\displayskipgluefactor} + +\def\belowdisplayskipsize% obsolete + {\displayskipsize\displayskipfactor\displayskipgluefactor} + +\def\abovedisplayshortskipsize% obsolete + {\displayskipsize\displayshortskipfactor\displayshortskipgluefactor} + +\def\belowdisplayshortskipsize% obsolete + {\displayskipsize\displayshortskipfactor\displayshortskipgluefactor} + +\def\forgetdisplayskips % to do + {\abovedisplayskip \zeropoint + \belowdisplayskip \zeropoint + \abovedisplayshortskip\zeropoint + \belowdisplayshortskip\zeropoint} + +\definenumber % \definelabel + [\v!formula] + [\c!text=\v!formula, + \c!way=\@@fmway, + \c!blockway=\@@fmblockway, + \c!location=\v!intext, + \c!conversion=\@@fmconversion] + +\def\setupformulas + {\dodoubleargument\getparameters[\??fm]} + +\newconditional\handleformulanumber +\newconditional\incrementformulanumber + +\def\formuladistance{\formulaparameter\c!distance} + +\def\doformulareference#1#2% + {\doifsomething{#1}{\doifnotinset{#1}{+,-}{\rawreference\s!for{#1}{#2}}}} + +\def\dododoformulanumber#1#2#3#4% (#1,#2)=outer(ref,sub) (#3,#4)=inner(ref,sub) + {\hbox\bgroup + \ifconditional\handleformulanumber + \ifconditional\incrementformulanumber + \incrementnumber[\v!formula]% + \fi + \makesectionnumber[\v!formula]% + \setbox0\hbox{\ignorespaces#2\unskip}% + \ifdim\wd0>\zeropoint + \edef\hetsubnummer{\@@fnseparator#2}%AM: was \edef\hetsubnummer{#2}% + \else + \let\hetsubnummer\empty + \fi + \doformulareference{#1}{\composedsectionnumber\hetsubnummer}% + \setbox0\hbox{\ignorespaces#4\unskip}% + \ifdim\wd0>\zeropoint + \edef\hetsubnummer{\@@fnseparator#4}%AM: was \edef\hetsubnummer{#4}% + \fi + \doformulareference{#3}{\composedsectionnumber\hetsubnummer}% + \doflushformulalistentry{\composedsectionnumber\hetsubnummer}% + \rm % nodig ? + \doif{\formulaparameter\c!location}\v!right{\hskip\formuladistance}% + \@@fmnumbercommand + {\dostartattributes\??fm\c!numberstyle\c!numbercolor + \strut + \@@fmleft + \preparefullnumber\??fm\composedsectionnumber\preparednumber + \labeltexts\v!formula + {\ignorespaces\preparednumber\ignorespaces\hetsubnummer\unskip}% + \@@fmright + \dostopattributes}% + \doif{\formulaparameter\c!location}\v!left{\hskip\formuladistance}% + \fi + \egroup} + +\def\dodoformulanumber[#1][#2][#3]% + {\doquadruplegroupempty\dododoformulanumber{#1}{#2}{#3}} + +\def\doformulanumber + {\dotripleempty\dodoformulanumber} + +\setvalue{\e!start\v!formula}{\dostartformula{}} +\setvalue{\e!stop \v!formula}{\dostopformula} + +\def\definieerformule + {\dodoubleempty\dodefinieerformule} + +\def\dodefinieerformule[#1][#2]% + {\doifsomething{#1} + {\copyparameters + [\??fm#1][\??fm] + [\c!spacebefore,\c!spaceafter,\c!grid, + \c!leftmargin,\c!rightmargin,\c!margin, + \c!indentnext,\c!alternative, + \c!strut,\c!align,\c!distance]% + \setupformulas[#1][#2]% + \setvalue{\e!start#1\v!formula}{\dostartformula{#1}}% + \setvalue{\e!stop #1\v!formula}{\dostopformula}}} + +\newtoks \everysetupformulas \relax % we need a hook for extensions in modules + +\def\setupformulas + {\dodoubleempty\dosetupformulas} + +\def\dosetupformulas[#1][#2]% + {\ifsecondargument + \getparameters[\??fm#1][#2]% + \else + \getparameters[\??fm][#1]% + \fi + \the\everysetupformulas} + +\def\formulaparameter#1% + {\csname\??fm\currentformula#1\endcsname} + +\setupformulas + [\c!way=\@@nrway, + \c!blockway=, + \c!sectionnumber=\@@nrsectionnumber, + \c!conversion=\v!numbers, + \c!location=\v!right, + \c!left=(, + \c!right=), + \c!spacebefore=, + \c!spaceafter=\@@fmspacebefore, + \c!leftmargin=\!!zeropoint, + \c!rightmargin=\!!zeropoint, + \c!margin=, + \c!indentnext=\v!no, + \c!alternative=\s!default, + \c!align=, + \c!strut=\v!no, + \c!separator=\@@koseparator, + \c!distance=1em] + +\def\currentformula {} +\def\predisplaysizethreshhold{2em} % was 3em + +\def\leftdisplayskip {\leftskip} +\def\rightdisplayskip {\rightskip} +\def\leftdisplaymargin {\formulaparameter\c!leftmargin} +\def\rightdisplaymargin {\formulaparameter\c!rightmargin} +\def\displaygridsnapping{\formulaparameter\c!grid} + +\def\beforedisplayspace + {\doifnot{\formulaparameter\c!spacebefore}\v!none{\blank[\formulaparameter\c!spacebefore]}} + +\def\afterdisplayspace + {\doifnot{\formulaparameter\c!spaceafter }\v!none{\blank[\formulaparameter\c!spaceafter ]}} + +\def\setpredisplaysize#1% + {\predisplaysize#1\relax + \ifdim\predisplaysize<\maxdimen + \ifdim\predisplaysize>\zeropoint + \advance\predisplaysize \predisplaysizethreshhold + \fi + \advance\predisplaysize \displayindent % needed ? + \ifdim\predisplaysize>\hsize + \predisplaysize\hsize + \fi + \else + \predisplaysize\zeropoint + \fi} + +\def\setdisplaydimensions + {\displayindent\leftdisplayskip + \advance\displayindent\leftdisplaymargin + \displaywidth\hsize +% \setlocalhsize +% \displaywidth\localhsize + \ifdim\hangindent>\zeropoint + \advance\displayindent\hangindent + \else + \advance\displaywidth\hangindent + \fi + \advance\displaywidth-\displayindent + \advance\displaywidth-\rightdisplayskip + \advance\displaywidth-\rightdisplaymargin + \hsize\displaywidth} % new, else overfull in itemize + +\newif\ifoptimizedisplayspacing + +\def\dostartformula#1% + {\dodoubleempty\dodostartformula[#1]} + +\newskip\formulaparskip +\newskip\formulastrutht +\newskip\formulastrutdp + +% hm, invoke otr in hmode in order to move skips to mvl, could be an option + +%D \startbuffer +%D \startformula[9pt] x = 1 \stopformula +%D \startformula[7pt] x = 1 \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +\def\dodostartformula[#1][#2]% setting leftskip adaption is slow ! + {% todo: test first + % + % \ifdim\lastskip>\zeropoint + % \resetlastlinewidth % else problems with in between stuff without \epar + % \fi + \bgroup % HERE + \the\everybeforedisplayformula + \formulaparskip\parskip + \formulastrutdp\strutdepth + \formulastrutht\strutheight + \switchtoformulabodyfont[#2]% + \parskip\formulaparskip + \def\currentformula{#1}% + % may look better in itemizations + \doif{\formulaparameter\c!option}\v!middle + {\def\leftdisplayskip{\zeropoint}% + \def\rightdisplayskip{\zeropoint}}% + % this was an experiment + \doifsomething{\formulaparameter\c!margin}% so we test first + {\dosetleftskipadaption{\formulaparameter\c!margin}% + \edef\leftdisplaymargin{\the\leftskipadaption}}% overloaded + \long\def\dostartformula##1{\bgroup\let\dostopformula\egroup}% + \freezedimenmacro\leftdisplayskip + \freezedimenmacro\rightdisplayskip + \freezedimenmacro\leftdisplaymargin + \freezedimenmacro\rightdisplaymargin + \freezedimenmacro\predisplaysizethreshhold + \forgetdisplayskips + \ifoptimizedisplayspacing + \ifdim\lastlinewidth>\zeropoint + \abovedisplayshortskip-\strutht\relax + \fi + \else + \resetlastlinewidth + \fi + \getvalue{\e!start\formulaparameter\c!alternative\v!formula}} + +\def\switchtoformulabodyfont{\switchtobodyfont} + +\setvalue{\v!formula}{\dosingleempty\doformula} + +\def\doformula[#1]#2% + {\begingroup + \switchtoformulabodyfont[#1]% + % not : \def\doformula[##1]##2{\mathematics{##2}}% + \mathematics{#2}% + \endgroup} + +\let\doplaceformulanumber\empty + +\def\dostopformula + {\doplaceformulanumber + \getvalue{\e!stop\formulaparameter\c!alternative\v!formula}% + \resetlastlinewidth + \nonoindentation + \dochecknextindentation{\??fm\currentformula}% + \egroup + \hangafter\minusone % added for side floats + \hangindent\zeropoint % added for side floats + \setfalse\handleformulanumber + \dorechecknextindentation} % here ? + +\newif\ifinformula + +\def\startdisplaymath + {\ifgridsnapping + \beforedisplayspace + \snapmathtogrid\vbox + \bgroup + \informulatrue + %\forgetall % breaks side floats + \else + \bgroup + \parskip\formulaparskip % ! ! + \informulatrue + %\forgetall % otherwise backgrounds fail + \ifdim\lastskip<\zeropoint\else + \par + \ifvmode \ifdim\parskip>\zeropoint\relax + \whitespace \vskip-\parskip % kind of forces and cancels again + \fi \fi + \fi + \doif\displaygridcorrection{-\v!top}{\kern-\strutht}% new, currently only option/default + \beforedisplayspace + \par + \ifvmode + \ifindentfirstparagraph % tricky, probably needs more testing + \prevdepth-\maxdimen % texbook pagina 79-80 + % otherwise problems at the top of a page, don't remove: + \verticalstrut + \vskip-\struttotal + \vskip-\baselineskip + \fi + \fi + \fi + $$\setdisplaydimensions + \setpredisplaysize\lastlinewidth + \startinnermath} + +\def\stopdisplaymath + {\stopinnermath + $$% + \ifgridsnapping + \egroup + \afterdisplayspace + \else + \par\ifvmode\ifdim\parskip>\zeropoint\whitespace\vskip-\parskip\fi\fi + \afterdisplayspace + \egroup + \fi + \globallet\displaylinecorrection\empty + \gdef\displaygridcorrection{\displaygridsnapping}} + +\newif\ifclipdisplaymath \clipdisplaymathtrue +\def\displaymathclipfactor{1.1} + +\def\snapmathtogrid % to do \dp + {\dowithnextbox + {\bgroup + \donefalse + \ifclipdisplaymath + \ifdim\nextboxht<\displaymathclipfactor\lineheight + \donetrue + \fi + \fi + \ifdone + \nextboxht\lineheight + \else + \getnoflines\nextboxht + \setbox\nextbox\vbox to \noflines\lineheight + {\vfill\flushnextbox\vfill}% + \setbox\nextbox\hbox{\lower\strutdepth\flushnextbox}% + \fi + \snaptogrid[\displaygridcorrection]\hbox{\flushnextbox}% + \egroup}} + +\def\displaygridcorrection{\displaygridsnapping} +\let\displaygridcorrection\empty + +\def\moveformula + {\dosingleempty\domoveformula} + +\def\domoveformula[#1]% brr gaat mogelijk fout + {\iffirstargument + \xdef\displaygridcorrection{#1}% + \else + \gdef\displaygridcorrection{-\v!top}% handy with short preline + \fi + \globallet\displaylinecorrection\displaygridcorrection} + +\let\startinnermath\empty +\let\stopinnermath \empty + +\def\defineformulaalternative + {\dotripleargument\dodefineformulaalternative} + +\def\dodefineformulaalternative[#1][#2][#3]% + {\setvalue{\e!start#1\v!formula}{#2}% + \setvalue{\e!stop #1\v!formula}{#3}} + +\defineformulaalternative[\s!default][\startdisplaymath][\stopdisplaymath] + +% sp = single line paragraph sd = single line display +% mp = multi line paragraph md = multy line display + +\defineformulaalternative[single][\startdisplaymath][\stopdisplaymath] +\defineformulaalternative[multi] [\startdisplaymath][\stopdisplaymath] + +\definieerformule + [sp] + [\c!spacebefore=\v!none,\c!spaceafter=\v!none, + \c!indentnext=\v!no, + \c!alternative=single] + +\definieerformule + [sd] + [\c!spacebefore=\v!none,\c!spaceafter=\v!none, + \c!indentnext=\v!yes, + \c!alternative=single] + +\definieerformule + [mp] + [\c!indentnext=\v!no, + \c!alternative=multi] + +\definieerformule + [md] + [\c!indentnext=\v!yes, + \c!alternative=multi] + +% \defineformulaalternative[multi][\begindmath][\enddmath] +% +% \fakewords{20}{40}\epar +% \placeformula {a} $$ \fakespacingformula $$ +% \fakewords{20}{40}\epar +% \placeformula {b} \startformule \fakespacingformula \stopformule +% \placeformula {b} \startformule \fakespacingformula \stopformule +% \fakewords{20}{40}\epar +% \placeformula {c} \startmdformule \fakespacingformula \stopmdformule +% \placeformula {c} \startmdformule \fakespacingformula \stopmdformule +% \fakewords{20}{40}\epar +% \placeformula {d} \startmpformule \fakespacingformula \stopmpformule +% \placeformula {d} \startmpformule \fakespacingformula \stopmpformule +% \fakewords{20}{40}\epar +% \placeformula {e} \startsdformule \fakespacingformula \stopsdformule +% \placeformula {e} \startsdformule \fakespacingformula \stopsdformule +% \fakewords{20}{40}\epar +% \placeformula {f} \startspformule \fakespacingformula \stopspformule +% \placeformula {f} \startspformule \fakespacingformula \stopspformule +% \fakewords{20}{40} + +\def\placeformula + {\settrue\incrementformulanumber + \dodoubleempty\doplaceformula} + +\def\placesubformula + {\setfalse\incrementformulanumber + \dodoubleempty\doplaceformula} + +%D \macros +%D {setupsubformulas, startsubformulas} +%D +%D New code (by Aditya Mahajan / cleaned up by HH, please check): + +% \setupsubformulas[conversion=romannumerals] +% +% \placeformula +% \startsubformulas[Maxwell] +% \startformulas +% \startformula \startalign +% \NC \nabla\cdot\bf E \NC = \frac{\rho}{\varepsilon_0} \NR[Maxwell 1] +% \NC \nabla\times\bf E \NC = - \frac{\partial\bf B}{\partial t} \NR[Maxwell II] +% \stopalign \stopformula +% \startformula \startalign +% \NC \nabla\cdot \bf B \NC = 0 \NR[Maxwell III] +% \NC \nabla\times\bf B \NC = \mu_0{\bf j}+\varepsilon_0\mu_0\frac{\partial\bf E}{\partial t} \NR[Maxwell IV] +% \stopalign \stopformula +% \stopformulas +% \stopsubformulas +% +% Maxwell : \in [Maxwell] and II : \in [Maxwell II] + +\def\setupsubformulas + {\dodoubleargument\getparameters[\??fn]} + +\definenumber[\v!formula*] + +\def\subformulaconversion % #1 + {\getnumber[\v!formula*]\@@fnseparator\convertnumber\@@fnconversion} % #1 + +\defineconversion[\v!subformula][\subformulaconversion] + +\def\startsubformulas + {\dosingleempty\dostartsubformulas} + +\def\dostartsubformulas[#1]% + {\incrementnumber[\v!formula]% + \makesectionnumber[\v!formula]% + \doflushformulalistentry{\composedsectionnumber}% + \doformulareference{#1}\composedsectionnumber + \expanded{\setupnumber + [\v!formula*] + [\c!start={\rawnumber[\v!formula]}, + \c!way=\@@fmway, + \c!conversion=\@@fmconversion]}% + \bgroup + \savenumber[\v!formula]% + \setupformulas + [\c!conversion=\v!subformula, + \c!way=\v!by\v!text]% + \resetnumber + [\v!formula]} + +\def\stopsubformulas + {\restorenumber[\v!formula]% + \egroup + \resetlastlinewidth + \nonoindentation + \dochecknextindentation\??fn + \dorechecknextindentation} % here ? + +%D Named subformulas + +\def\startnamedsubformulas + {\dosingleempty\dostartnamedsubformulas} + +\def\dostartnamedsubformulas[#1]#2% + {\setformulalistentry{#2}% + \startsubformulas[#1]} + +\def\stopnamedsubformulas + {\stopsubformulas} + +\setupsubformulas + [\c!conversion=\v!character, + %\c!separator=\@@fmseparator, + \c!separator=,% AM: for compatibility with \placesubformula + \c!indentnext=\@@fmindentnext] + +%D Experimental goodie: +%D +%D \startbuffer +%D \placelist[formula][criterium=text] \blank[2*big] +%D \placenamedformula[one]{first} \startformula a = 1 \stopformula \endgraf +%D \placeformula \startformula a = 2 \stopformula \endgraf +%D \placenamedformula {second} \startformula a = 3 \stopformula \endgraf +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +\definelist[\v!formula] + +\global\let\doflushformulalistentry\gobbleoneargument + +\def\setformulalistentry#1% + {\gdef\doflushformulalistentry##1% + {\expanded{\writetolist[\v!formula]{##1}}{#1}% + \global\let\doflushformulalistentry\gobbleoneargument}} + +\def\placenamedformula + {\dosingleempty\doplacenamedformula} + +\def\doplacenamedformula[#1]#2% + {\iffirstargument + \def\next{\placeformula[#1]}% + \else + \let\next\placeformula + \fi + \setformulalistentry{#2}% + \next} + +%D The implementation of placement is a bit ugly: + +\def\doplaceformula[#1][#2]% #2 = dummy, gobbles spaces + {\def\redoplaceformula + {\bgroup + \ifx\next\bgroup + \egroup \@EA\moreplaceformula % [ref]{} + \else + \let\nextnext$% no def + \ifx\next\nextnext + \egroup \@EAEAEA\dispplaceformula % [ref]$$ + \else + \egroup \@EAEAEA\dodoplaceformula % [ref]\start + \fi + \fi[#1]{}}% + \futurelet\next\redoplaceformula} + +\long\def\moreplaceformula[#1]#2#3#4% #2 dummy #4 gobbles spaces + {\def\redoplaceformula + {\bgroup + \let\nextnext$% no def + \ifx\next\nextnext + \egroup \@EA\dispplaceformula % [ref]$$ + \else + \egroup \@EA\dodoplaceformula % [ref]\start + \fi + [#1]{#3}}% + \futurelet\next\redoplaceformula#4} + +\let\startplaceformula\placeformula +\let\stopplaceformula \relax + +\def\startformulas#1\stopformulas % new / to be internationalized + {\bgroup + \forgetdisplayskips + \startdisplaymath + \setlocalhsize + \long\def\startformula##1\stopformula + {\advance\scratchcounter\plusone}% + \scratchcounter\zerocount + #1% preroll + \ifcase\scratchcounter\else + \divide \hsize \scratchcounter + \fi + \hbox to \localhsize \bgroup + \hss + \def\normalstartformula{\vskip-\strutdepth$$}% i hate this + \def\normalstopformula {$$}% + \def\startformula {$\vcenter\bgroup\normalstartformula}% + \def\stopformula {\normalstopformula\egroup$\hss}% + #1% + \egroup + \stopdisplaymath + \egroup + \hangafter\minusone % added for side floats + \hangindent\zeropoint} % added for side floats + +\def\dispplaceformula[#1]#2$$#3$$% + {\dodoplaceformula[#1]{#2}\dostartformula{}#3\dostopformula} + +\let\donestedformulanumber\gobbletwoarguments + +\def\dodoplaceformula[#1]#2% messy, needs a clean up + {\doifelse{#1}{-} + {\setfalse\handleformulanumber} + {\doifelse{#2}{-} + {\setfalse\handleformulanumber} + {\settrue\handleformulanumber}}% + \ifconditional\handleformulanumber + \def\formulanumber + {%\global\let\subformulanumber\doformulanumber % no, bug + \doformulanumber[#1][#2]}% + \def\donestedformulanumber##1##2% + {\doifsomething{##1} + {\doifelse{##1}{+}{\doformulanumber[#1]}{\doformulanumber[##1]}[##2][]{}}}% + \def\subformulanumber + {\setfalse\incrementformulanumber + \formulanumber}% + \gdef\doplaceformulanumber + {\global\let\doplaceformulanumber\empty + \doifelse\@@fmlocation\v!left + {\normalleqno{\doformulanumber[#1][#2][]{}}} + {\normalreqno{\doformulanumber[#1][#2][]{}}}}% + \else + \def\formulanumber{\doformulanumber[#1][#2]}% + \let\donestedformulanumber\gobbletwoarguments + \let\subformulanumber\doformulanumber % was \global + \global\let\doplaceformulanumber\empty + \fi} + +%D We need a hook into the plain math alignment macros +%D +%D \starttyping +%D \displaylines +%D \eqalignno +%D \eqalignno +%D \stoptyping +%D +%D Otherwise we get a missing \type {$$} error reported. + +\def\resetdisplaymatheq + {\let\normalleqno\relax \let\leqno\relax + \let\normalreqno\relax \let\eqno \relax + \let\doplaceformulanumber\empty} + +%D The next code is derived from plain \TEX. + +\newcount\interdisplaylinepenalty \interdisplaylinepenalty=100 + +\newif\ifdt@p + +\def\displ@y + {\global\dt@ptrue + \openup\displayopenupvalue % was \openup\jot + \everycr + {\noalign + {\ifdt@p + \global\dt@pfalse + \ifdim\prevdepth>-\thousandpoint + \vskip-\lineskiplimit + \vskip\normallineskiplimit + \fi + \else + \penalty\interdisplaylinepenalty + \fi}}} + +\let\normaldispl@y\displ@y + +\def\displ@y{\resetdisplaymatheq\normaldispl@y} + +\def\m@th{\mathsurround\zeropoint} % obsolete + +%D Here we implement a basic math alignment mechanism. Numbers +%D are also handled. The macros \type {\startinnermath} and +%D \type {\stopinnermath} can be overloaded in specialized +%D modules. + +\def\startinnermath + {\getvalue{\e!start\??fm\formulaparameter\c!align}} + +\def\stopinnermath + {\getvalue{\e!stop \??fm\formulaparameter\c!align}} + +\def\mathinnerstrut + {\doif{\formulaparameter\c!strut}\v!yes\strut} + +\long\def\defineinnermathhandler#1#2#3% + {\setvalue{\e!start\??fm#1}{#2}% + \setvalue{\e!stop \??fm#1}{#3}} + +\newif\iftracemath + +\def\mathhbox + {\iftracemath\ruledhbox\else\hbox\fi} + +\chardef\mathraggedstatus=0 % normal left center right +\chardef\mathnumberstatus=0 % nothing normal shift_right +\let\mathnumbercorrection\!!zeropoint + +\def\startmathbox#1% + {\hsize\displaywidth + \global\chardef\mathnumberstatus\plusone + \chardef\mathraggedstatus#1\relax + \let\mathnumbercorrection\!!zeropoint + \global\let\@eqno \empty \def\eqno {\gdef\@eqno }% + \global\let\@leqno\empty \def\leqno{\gdef\@leqno}% + % added + \let\normalreqno\eqno + \let\normalleqno\leqno + % added + \doplaceformulanumber + \setbox\scratchbox\mathhbox to \displaywidth\bgroup + \mathinnerstrut + $% + \displaystyle + \ifcase\mathraggedstatus\or\hfill\or\hfill\fi} + +\def\llappedmathno + {\ifcase\mathraggedstatus\or + \@eqno + \or + \llap{\@eqno}% + \or + \llap{\@eqno}% + \fi} + +\def\rlappedmathno + {\ifcase\mathraggedstatus\or + \rlap{\@leqno}% + \or + \rlap{\@leqno}% + \or + \@leqno + \fi} + +\def\stopmathbox + {$% + \ifcase\mathraggedstatus\or\or\hfill\or\hfill\fi + \egroup + \setbox0\hbox{\unhcopy\scratchbox}% + \scratchdimen\wd0 + \ifdim\scratchdimen>\displaywidth + \donetrue + \else + \donefalse + \fi + \hbox to \displaywidth\bgroup + \ifcase\mathnumberstatus + \box\scratchbox + \or + \ifx\@leqno\empty + \ifx\@eqno\empty + \box\scratchbox + \else + \ifdone + \vbox{\box\scratchbox\hbox to \displaywidth{\hss\llappedmathno}}% + \else + \hss\box\scratchbox\llappedmathno % hss makes room for number + \fi + \fi + \else + \ifdone + \vbox{\hbox to \displaywidth{\rlappedmathno\hss}\box\scratchbox}% + \else + \rlappedmathno\box\scratchbox\hss % hss makes room for number + \fi + \fi + \or + \hskip\mathnumbercorrection + \box\scratchbox + \hss + \else + \box\scratchbox + \fi + \egroup} + +\defineinnermathhandler\v!left {\startmathbox\plusone }{\stopmathbox} +\defineinnermathhandler\v!middle {\startmathbox\plustwo }{\stopmathbox} +\defineinnermathhandler\v!right {\startmathbox\plusthree}{\stopmathbox} +\defineinnermathhandler\v!flushleft {\startmathbox\plusthree}{\stopmathbox} +\defineinnermathhandler\v!center {\startmathbox\plustwo }{\stopmathbox} +\defineinnermathhandler\v!flushright{\startmathbox\plusone }{\stopmathbox} + +%D [The examples below are in english and don't process in the +%D documentation style, which will be english some day.] +%D +%D Normally a formula is centered, but in case you want to +%D align it left or right, you can set up formulas to behave +%D that way. Normally a formula will adapt is left indentation +%D to the environment: +%D +%D \startbuffer +%D \fakewords{20}{40}\epar +%D \startitemize +%D \item \fakewords{20}{40}\epar +%D \placeformula \startformula \fakeformula \stopformula +%D \item \fakewords{20}{40}\epar +%D \stopitemize +%D \fakewords{20}{40}\epar +%D \stopbuffer +%D +%D % \getbuffer +%D +%D In the next examples we explicitly align formulas to the +%D left (\type {\raggedleft}), center and right (\type +%D {\raggedright}): +%D +%D \startbuffer +%D \setupformulas[align=left] +%D \startformula\fakeformula\stopformula +%D \setupformulas[align=middle] +%D \startformula\fakeformula\stopformula +%D \setupformulas[align=right] +%D \startformula\fakeformula\stopformula +%D \stopbuffer +%D +%D \typebuffer +%D +%D Or in print: +%D +%D % {\getbuffer} +%D +%D With formula numbers these formulas look as follows: +%D +%D \startbuffer +%D \setupformulas[align=left] +%D \placeformula \startformula\fakeformula\stopformula +%D \setupformulas[align=middle] +%D \placeformula \startformula\fakeformula\stopformula +%D \setupformulas[align=right] +%D \placeformula \startformula\fakeformula\stopformula +%D \stopbuffer +%D +%D % {\getbuffer} +%D +%D This was keyed in as: +%D +%D \typebuffer +%D +%D When tracing is turned on (\type {\tracemathtrue}) you can +%D visualize the bounding box of the formula, +%D +%D % {\tracemathtrue\getbuffer} +%D +%D As you can see, the dimensions are the natural ones, but if +%D needed you can force a normalized line: +%D +%D \startbuffer +%D \setupformulas[strut=yes] +%D \placeformula \startformula \fakeformula \stopformula +%D \stopbuffer +%D +%D \typebuffer +%D +%D This time we get a more spacy result. +%D +%D % {\tracemathtrue\getbuffer} +%D +%D We will now show a couple of more settings and combinations +%D of settings. In centered formulas, the number takes no space +%D +%D \startbuffer +%D \setupformulas[align=middle] +%D \startformula \fakeformula \stopformula +%D \placeformula \startformula \fakeformula \stopformula +%D \stopbuffer +%D +%D \typebuffer % {\tracemathtrue\getbuffer} +%D +%D You can influence the placement of the whole box with the +%D parameters \type {leftmargin} and \type {rightmargin}. +%D +%D \startbuffer +%D \setupformulas[align=right,leftmargin=3em] +%D \startformula \fakeformula \stopformula +%D \placeformula \startformula \fakeformula \stopformula +%D +%D \setupformulas[align=left,rightmargin=1em] +%D \startformula \fakeformula \stopformula +%D \placeformula \startformula \fakeformula \stopformula +%D \stopbuffer +%D +%D \typebuffer % {\tracemathtrue\getbuffer} +%D +%D You can also inherit the margin from the environment. +%D +%D \startbuffer +%D \setupformulas[align=right,margin=standard] +%D \startformula \fakeformula \stopformula +%D \placeformula \startformula \fakeformula \stopformula +%D \stopbuffer +%D +%D \typebuffer % {\tracemathtrue\getbuffer} +%D +%D The distance between the formula and the number is only +%D applied when the formula is left or right aligned. +%D +%D \startbuffer +%D \setupformulas[align=left,distance=2em] +%D \startformula \fakeformula \stopformula +%D \placeformula \startformula \fakeformula \stopformula +%D \stopbuffer +%D +%D \typebuffer % {\tracemathtrue\getbuffer} + +%D \macros +%D {big..} +%D +%D Because they are related to the bodyfontsize, we redefine +%D some \PLAIN\ macros. + +\def\@@dobig#1#2% + {{\hbox{$\left#2\vbox\!!to#1\bodyfontsize{}\right.\nulldelimiterspace\zeropoint\relax\mathsurround\zeropoint$}}} + +\def\big {\@@dobig{0.85}} +\def\Big {\@@dobig{1.15}} +\def\bigg{\@@dobig{1.45}} +\def\Bigg{\@@dobig{1.75}} + +%D \macros +%D {bordermatrix} +%D +%D We already redefined \type {\bordermatrix} in \type +%D {font-ini}. + +%D \macros +%D {setuptextformulas} +%D +%D This command sets up in||line math. Most features deals +%D with grid snapping and are experimental. + +\newevery \everysetuptextformulas \relax + +\def\setuptextformulas + {\dosingleempty\dosetuptextformulas} + +\def\dosetuptextformulas[#1]% + {\getparameters[\??mt][#1]% + \the\everysetuptextformulas} + +%D \macros +%D {super, sub} +%D +%D \TEX\ uses \type{^} and \type{_} for entering super- and +%D subscript mode. We want however a bit more control than +%D normally provided, and therefore provide \type {\super} +%D and \type{sub}. + +\global\let\normalsuper=^ +\global\let\normalsuber=_ + +\newcount\supersubmode + +\newevery\everysupersub \EverySuperSub + +\appendtoks \advance\supersubmode \plusone \to \everysupersub + +\appendtoks + \gridsupsubstyle +\to \everysupersub + +\appendtoks + \doifelse\@@mtsize\v!small + {\let\gridsupsubstyle \scriptscriptstyle + \let\gridsupsubbodyfont \setsmallbodyfont}% + {\let\gridsupsubstyle \scriptstyle + \let\gridsupsubbodyfont \relax}% +\to \everysetuptextformulas + +\setuptextformulas + [\c!size=\v!normal] + +\def\dogridsupsub#1#2% + {\begingroup + \setbox\nextbox\iftracegridsnapping\ruledhbox\else\hbox\fi + {\gridsupsubbodyfont + $\strut^{\the\everysupersub#1}_{\the\everysupersub#2}$}% + \nextboxht\strutheight + \nextboxdp\strutdepth + \flushnextbox + \endgroup} + +\def\gridsupsub + {\ifconditional\crazymathsnapping + \ifgridsnapping + \@EAEAEA\dogridsupsub + \else + \@EAEAEA\normalsupsub + \fi + \else + \@EA\normalsupsub + \fi} + +\def\normalsupsub#1#2% + {^{\the\everysupersub#1}_{\the\everysupersub#2}} + +\appendtoks + \let\gridsupsubstyle \relax + \let\gridsupsubbodyfont\relax + \let\gridsupsub \normalsupsub +\to \everydisplay + +\def\super#1{^{\the\everysupersub#1}} +\def\suber#1{_{\the\everysupersub#1}} +\def\supsub#1#2{\super{#1}\suber{#2}} +\def\subsup#1#2{\suber{#1}\super{#2}} + +%\def\super#1{\gridsupsub{#1}{}} % +%\def\suber#1{\gridsupsub{}{#1}} % +% +%\def\supsub#1#2{\gridsupsub{#1}{#2}} +%\def\subsup#1#2{\gridsupsub{#2}{#1}} + +\def\gridsuper#1{\gridsupsub{#1}{}} +\def\gridsuber#1{\gridsupsub{}{#1}} + +% \let\sup\super % math char +% \let\sub\suber + +% test set: +% +% \startbuffer +% \sform{x\frac{1}{2}} +% \sform{x\sup{\frac{1}{2}} + x\sup{2} + 2} +% \sform{x\supsub{\frac{1}{2}}{\frac{1}{2}} + x\sup{2} + 2} +% \stopbuffer +% +% \typebuffer +% +% \startlines +% \getbuffer +% \stoplines +% +% \startbuffer +% $x\frac{1}{2}$ +% $x\sup{\frac{1}{2}} + x^2 + 2$ +% $x\supsub{\frac{1}{2}}{\frac{1}{2}} + x^2 + 2$ +% \stopbuffer +% +% \typebuffer +% +% \start +% \enablesupersub +% \enableautomath +% \startlines +% \getbuffer +% \stoplines +% \stop + +%D \macros +%D {enablesupersub,enablesimplesupersub} +%D +%D We can let \type {^} and \type {_} act like \type {\super} +%D and \type {\sub} by saying \type {\enablesupersub}. + +\bgroup +\catcode`\^=\@@active +\catcode`\_=\@@active +\gdef\enablesupersub + {\catcode`\^=\@@active + \def^{\ifmmode\expandafter\super\else\expandafter\normalsuper\fi}% + \catcode`\_=\@@active + \def_{\ifmmode\expandafter\suber\else\expandafter\normalsuber\fi}} +\egroup + +%D \macros +%D {enableautomath} +%D +%D The next one can be dangerous, but handy in controlled +%D situations. + +\bgroup \catcode`\$=\active + +\gdef\enableautomath + {\catcode`\$=\active + \def$##1${\snappedinlineformula{##1}}} + +% \gdef\enableautomath +% {\catcode`\$=\active +% \def${\doifnextcharelse$\doautodmath\doautoimath}% +% \def\doautoimath##1${\snappedinlineformula{##1}}% +% \def\doautodmath$##1$${\startformula##1\stopformula}} + +\egroup + +%D \macros +%D {...} +%D +%D New and experimental: snapping big inline math! + +\newconditional\halfcrazymathlines % \settrue\halfcrazymathlines +\newconditional\crazymathsnapping % \settrue\crazymathsnapping + +\appendtoks + \doifelse\@@mtgrid\v!yes \settrue\setfalse\crazymathsnapping + \doifelse\@@mtstep\v!halfline\settrue\setfalse\halfcrazymathlines +\to \everysetuptextformulas + +\setuptextformulas + [\c!grid=\v!yes, + \c!step=\v!line] + +\newcount\crazymathhack + +\let\lastcrazymathline \!!zeropoint +\let\lastcrazymathpage \!!zerocount +\let\lastcrazymathprelines \!!zerocount +\let\lastcrazymathpostlines\!!zerocount + +\def\crazymathtag{amh:\the\crazymathhack} +\def\crazytexttag{\v!text:\lastcrazymathpage} + +\def\crazymathindent{\hskip\MPx\crazymathtag\hskip-\MPx\crazytexttag} + +\def\flushcrazymathbox + {\nextboxht\strutheight + \nextboxdp\strutdepth + \hbox{\iftracegridsnapping\ruledhbox\fi{\flushnextbox}}} + +% possible pdftex bug: +% +% \dorecurse{100}{gest \vadjust {\strut} \par} \page +% \dorecurse{100}{gest \vadjust pre {\strut} \par} \page +% +% duplicate depth compensation with pre + +\def\snappedinlineformula + {\dosingleempty\dosnappedinlineformula} + +%D \starttabulate[|Tl|l|] +%D \NC - \NC half lines \NC \NR +%D \NC + \NC full lines \NC \NR +%D \NC = \NC force \NC \NR +%D \NC < \NC force, minus pre \NC \NR +%D \NC > \NC force, minus post \NC \NR +%D \stoptabulate + +\newif\if!!donee +\newif\if!!donef + +\def\inlinemathmargin{1pt} + +\settrue\autocrazymathsnapping + +% FROM NOW ON, CHANGES AS OPTIONS + +% TODO: SKYLINE (PREV LINE POS SCAN) + +\def\dosnappedinlineformula[#1]#2% + {\ifvmode\dontleavehmode\fi % tricky + \strut % prevents funny space at line break + \begingroup % interesting: \bgroup can make \vadjust disappear + \ifconditional\crazymathsnapping + \ifgridsnapping + \ifx\pdftexversion\undefined + \donefalse + \else + \checktextbackgrounds % we need pos tracking, to be made less redundant + \donetrue + \fi + \else + \donefalse + \fi + \else + \donefalse + \fi + \!!doneafalse % forced or not auto + \!!donebfalse % too heigh + \!!donecfalse % too low + \!!donedfalse % less before + \!!doneefalse % less after + \ifdone + \setbox\nextbox\hbox{$#2$}% + \iftracegridsnapping + \setbox\nextbox\ruledhbox + {\incolortrue\localcolortrue + \backgroundline[gray]{\showstruts\strut\flushnextbox}}% + \fi + \def\docommand##1% + {\doif{##1}-{\settrue \halfcrazymathlines}% + \doif{##1}+{\setfalse\halfcrazymathlines}% + \doif{##1}={\!!doneatrue}% + \doif{##1}<{\!!donedtrue}% + \doif{##1}>{\!!doneetrue}}% + \processcommalist[#1]\docommand +\if!!doneb + \if!!donec \else + \setfalse\halfcrazymathlines + \fi +\else + \if!!donec + \setfalse\halfcrazymathlines + \fi +\fi + \donefalse + \if!!donea + \donetrue +\scratchdimen \nextboxht +\advance\scratchdimen .5\lineheight +\nextboxht\scratchdimen +\scratchdimen \nextboxdp +\advance\scratchdimen .5\lineheight +\nextboxdp\scratchdimen + \else\ifdim\nextboxht>\strutht + \donetrue + \else\ifdim\nextboxdp>\strutdp + \donetrue + \fi\fi\fi + \ifconditional\autocrazymathsnapping \else \if!!donea \else + % don't compensate, just snap to strut + \donefalse + % signal for next else, snap line to strut + \!!doneatrue + \fi \fi + \fi + \ifdone + % analyze height + \scratchdimen\inlinemathmargin + \advance\scratchdimen \strutht + \ifdim\nextboxht<\scratchdimen \else \!!donebtrue \fi + % analyze depth + \scratchdimen\inlinemathmargin + \advance\scratchdimen \strutdp + \ifdim\nextboxdp<\scratchdimen \else \!!donectrue \fi + % analyzed or forced + \ifdone + \global\advance\crazymathhack\plusone + \donefalse + \ifnum\MPp\crazymathtag=\lastcrazymathpage\relax + \ifdim\MPy\crazymathtag=\lastcrazymathline\relax + \donetrue + \fi + \fi + \ifnum\MPp\crazymathtag=\zerocount \donefalse \fi + \ifdim\MPy\crazymathtag=\zeropoint \donefalse \fi + \ifdone + % same page and same line + \else + \global\let\lastcrazymathprelines \!!zerocount + \global\let\lastcrazymathpostlines\!!zerocount + \xdef\lastcrazymathpage{\MPp\crazymathtag}% + \xdef\lastcrazymathline{\MPy\crazymathtag}% + \fi + \if!!doneb + % \getrawnoflines\nextboxht + \scratchdimen\nextboxht + \advance\scratchdimen-\strutht + \getnoflines\scratchdimen + \if!!doned \advance\noflines\minusone \fi + \scratchcounter\noflines + \advance\noflines-\lastcrazymathprelines\relax + \ifnum\noflines>\zerocount + \xdef\lastcrazymathprelines{\the\scratchcounter}% + \scratchdimen\noflines\lineheight + \ifconditional\halfcrazymathlines + \advance\scratchdimen-.5\lineheight + \fi + \advance\scratchdimen-\strutdepth + \setbox\scratchbox\null + \wd\scratchbox2\bodyfontsize + \ht\scratchbox\scratchdimen + \dp\scratchbox\strutdepth + %%% top correction code (see below) + \normalvadjust pre + {%\allowbreak % sometimes breaks spacing + \forgetall + \crazymathindent + \iftracegridsnapping + \setbox\scratchbox\hbox + {\incolortrue\localcolortrue\green + \ruledhbox{\box\scratchbox}}% + \fi + \box\scratchbox + \endgraf + \nobreak}% + \else\ifnum\scratchcounter>\zerocount + \normalvadjust pre + {\nobreak}% + \fi\fi + \fi + \if!!donec + % \getrawnoflines\nextboxdp + \scratchdimen\nextboxdp + \advance\scratchdimen-\strutdp + \getnoflines\scratchdimen + \if!!donee \advance\noflines\minusone \fi + \scratchcounter\noflines + \advance\noflines-\lastcrazymathpostlines\relax + \ifnum\noflines>\zerocount + \donetrue + \else\ifnum\lastcrazymathpostlines=\zerocount + \donetrue + \else + \donefalse + \fi\fi + \else + \donefalse + \fi + \ifdone + \xdef\lastcrazymathpostlines{\the\scratchcounter}% + \ifnum\lastcrazymathpostlines=\zerocount + \global\let\lastcrazymathpostlines\!!plusone + \fi + \hbox{\setposition\crazymathtag\flushcrazymathbox}% + \scratchdimen\noflines\lineheight + \advance\scratchdimen-\lineheight + \advance\scratchdimen+\strutheight +\ifdim\scratchdimen>\zeropoint \else + \scratchdimen=\strutheight % todo : test for half lines +\fi + \ifconditional\halfcrazymathlines + \advance\scratchdimen-.5\lineheight + \fi + \setbox\scratchbox\null + \wd\scratchbox2\bodyfontsize + \ht\scratchbox\scratchdimen + \dp\scratchbox\strutdepth + \normalvadjust + {\forgetall + \crazymathindent + \iftracegridsnapping + \setbox\scratchbox\hbox + {\incolortrue\localcolortrue\color[blue]{\ruledhbox{\box\scratchbox}}}% + \fi + \box\scratchbox + \endgraf + % precaution: else we stick below the text bottom + \ifconditional\halfcrazymathlines + \allowbreak + \else + \vskip-\lineheight + \vskip \lineheight + \fi}% + \else + \hbox{\setposition\crazymathtag\flushcrazymathbox}% + \fi + \else + \flushcrazymathbox + \fi + \else\if!!donea + \flushcrazymathbox + \else + \mathematics{#2}% + \fi\fi + \endgroup} + + +%%% top correction code +%%% +%%% correct for fuzzy top of page situations +% +% \scratchdimen\lastcrazymathprelines\lineheight +% \advance\scratchdimen\MPy\crazymathtag +% \advance\scratchdimen\lineheight +% \advance\scratchdimen\topskip +% \advance\scratchdimen-\strutheight +% \dimen0=\MPy\crazytexttag +% \advance\dimen0 \MPh\crazytexttag +% \advance\scratchdimen-\dimen0\relax +% % do we need correction at all +% \ifdim\scratchdimen>\strutdepth\relax +% \donefalse +% \else\ifdim\scratchdimen<\zeropoint +% \donefalse +% \else +% \donetrue +% \fi\fi +% % analysis done +% \donefalse +% \ifdone +% \edef\crazymathcorrection{\the\scratchdimen}% +% \advance\scratchdimen-\dp\scratchbox +% \dp\scratchbox-\scratchdimen +% \else +% \let\crazymathcorrection\zeropoint +% \fi +% +%%% +%%% keep the previous code +%%% + +\let\tform\mathematics +\let\gform\snappedinlineformula + +% test set: +% +% \startbuffer +% Crazy math \gform {1+x} or \gform {\dorecurse {100} {1+} 1 = +% 101} and even gore crazy \gform {2^{2^2}_{1_1}} +% again\dorecurse {20} { and again} \gform {\sqrt {\frac +% {x^{5^5}} {\frac {1} {2}}}} even gore\dorecurse {50} { and +% gore} \tform {\dorecurse {12} {\gform {\sqrt {\frac +% {x^{5^5}} {3}}}+\gform {\sqrt {\frac {x^{5^5}} {\frac {1} +% {2}}}}+}x=10}\dorecurse{20} { super crazy math}: \tform +% {\dorecurse {30} {\gform {\sqrt {\frac {x^{5^5}} {3}}}+ +% \gform {\sqrt {\frac {x^{5^5}} {\frac {1} {2}}}}+ }x = 10}, +% and we're\dorecurse {20} { done}! +% \stopbuffer +% +% \setupcolors[state=start] \setuppapersize[S6][S6] +% +% \showgrid \tracegridsnappingtrue \showstruts +% +% \starttext +% \setuplayout[grid=yes,lines=15]\getbuffer \page +% \setuplayout[grid=yes,lines=16]\getbuffer \page +% \setuplayout[grid=yes,lines=17]\getbuffer \page +% \setuplayout[grid=yes,lines=18]\getbuffer \page +% \setuplayout[grid=yes,lines=19]\getbuffer \page +% \stoptext +% +% test +% +% \startregels +% \gform[<]{35 \cdot p^{\frac{3}{4}} = 70} +% \gform{12{,}4 \cdot d^3 = 200} +% \gform{a \cdot x^b}. +% \gform{12x^6 \cdot \negative 3x^4} +% \gform{\frac{12x^6}{\negative 3x^4}} +% \gform{(4x^2)^3} +% \gform{4x \sqrt{x} \cdot 3x^2} +% \gform{\frac{2x^4}{4x \sqrt{x}}} +% \gform{y = a \cdot x^b}. +% \gform{y_1 = \frac{15x^2}{x}} +% \gform{y_2 = x \cdot \sqrt{x}} +% \gform{y_3 = \frac{6x^3}{x^2}} +% \gform[<]{y_4 = \left(2x^2\right)^{\frac{1}{2}}} +% \gform{y_1 = \frac{4x^5}{x^2}} +% \gform{y_2 = 4 \cdot \sqrt{x}} +% \gform{y_3 = 4x^3} +% \gform{y_4 = \frac{100x}{\sqrt{x}}} +% \gform[<]{y_5 = 4 \cdot x^{\frac{1}{2}}} +% \gform{y_6 = \frac{1}{2} x \cdot 4x^2} +% \gform{y_7 = 2 \cdot x^3} +% \gform{y_8 = 100 \cdot x^{\frac{1}{2}}} +% \gform{4x^8 \cdot 8x^3} +% \gform{\frac{4x^8}{8x^3}} +% \gform{\left(\negative3x^4\right)^3} +% \gform{x^3 \sqrt{x} \cdot 3x^2} +% \gform{\frac{6x^3}{x^2 \sqrt{x}}} +% \gform{\frac{6}{2x^4}} +% \gform{\frac{1}{3x^6}} +% \gform{\frac{12x^8}{4x^{10}}} +% \gform{\frac{4}{\sqrt{x}}} +% \gform{\frac{1}{2x \sqrt{x}}} +% \gform{\frac{2{,}25}{p} = 0{,}35} +% \gform{4{,}50 + \frac{300}{k} = 4{,}70} +% \gform{\frac{1200}{k+12} - 42 = 6} +% \stopregels + +%D \macros +%D {restoremathstyle} +%D +%D We can pick up the current math style by calling \type +%D {\restoremathstyle}. + +\def\restoremathstyle + {\ifmmode + \ifcase\supersubmode + \textstyle + \or + \scriptstyle + \else + \scriptscriptstyle + \fi + \fi} + +%D \macros +%D {mathstyle} +%D +%D If one want to be sure that something is typeset in the +%D appropriate style, \type {\mathstyle} can be used: +%D +%D \starttyping +%D \mathstyle{something} +%D \stoptyping + +\def\mathstyle#1% + {\mathchoice + {\displaystyle #1}% + {\textstyle #1}% + {\scriptstyle #1}% + {\scriptscriptstyle#1}} + +%D Something similar can be used in the (re|)|definition +%D of \type {\text}. This version is a variation on the one +%D in the math module (see \type{m-math} and|/|or \type +%D {m-newmat}). + +\unexpanded\def\mathtext + {\mathortext\domathtext\hbox} + +\def\domathtext#1% + {\mathchoice + {\dodomathtext\displaystyle\textface {#1}}% + {\dodomathtext\textstyle \textface {#1}}% + {\dodomathtext\textstyle \scriptface {#1}}% + {\dodomathtext\textstyle \scriptscriptface{#1}}} + +\def\dodomathtext#1#2#3% no \everymath ! + %{\hbox{\everymath{#1}\switchtobodyfont [#2]#3}} % 15 sec + {\hbox{\everymath{#1}\setcurrentfontbody{#2}#3}} % 3 sec (no math) + +%D Because we may overload \type {\text} in other (structuring) +%D macros, we say: + +\appendtoks \let\text\mathtext \to \everymathematics + +%D \macros +%D {\definemathalignment, setupmathalignment, startmathalignment} +%D +%D Modules may provide additional alignment features. The following +%D mechanisms are provided by the core. + +% n>1 #### needed, strange # interaction in recurse + +\def\presetdisplaymath{\displ@y} % some day i will relocate the plain stuff + +\def\buildeqalign + {\scratchtoks\emptytoks + \dorecurse{\mathalignmentparameter\c!m} + {\ifnum\recurselevel>\plusone + \appendtoks + \tabskip\mathalignmentparameter\c!distance&\tabskip\zeropoint + \to\scratchtoks + \fi + \expanded{\scratchtoks{\the\scratchtoks\the\!!toksa}}% + \dorecurse{\numexpr\mathalignmentparameter\c!n-\plusone\relax} + {\expanded{\scratchtoks{\the\scratchtoks\the\!!toksb}}}}% + \expanded{\scratchtoks{\the\scratchtoks\the\!!toksc}}} + +\def\forgetalign + {\tabskip\zeropoint\everycr\emptytoks} + +\let\firstineqalign\empty +\let\nextineqalign \empty +\let\leftofeqalign \empty +\let\rightofeqalign\empty + +\def\mathineqalign#1{$\forgetalign\displaystyle{{}#1{}}$} +\def\textineqalign#1{$\forgetalign#1$} + +\def\eqalign#1% why no halign here, probably because of displaywidth + {\null\,\vcenter + {\openup.25\bodyfontsize% was: \openup\jot + \mathsurround\zeropoint + \ialign{\strut\hfil$\displaystyle{##}$&$\displaystyle{{}##{}}$\hfil\crcr#1\crcr}% + }\,} + +% preamble is scanned for tabskips so we need the span to prevent an error message + +\chardef\eqalignmode\plusone + +\def\preparereqalignno + {\!!toksa{\strut\firstineqalign\hfil\leftofeqalign\span\mathineqalign{##}\rightofeqalign\tabskip\zeropoint}% + \!!toksb{&\nextineqalign\leftofeqalign\span\mathineqalign{##}\rightofeqalign\tabskip\zeropoint}% + \ifnum\mathraggedstatus=\plusone + \!!toksc{\hfil&\span\textineqalign{##}\tabskip\zeropoint}% + \else\ifnum\mathraggedstatus=\plusthree + \!!toksc{\hfil\tabskip\zeropoint\!!plus 1\!!fill&\span\textineqalign{##}\tabskip\zeropoint}% + \else + \!!toksc{\hfil\tabskip\centering&\llap{\span\textineqalign{##}}\tabskip\zeropoint}% + \fi\fi + \global\chardef\mathnumberstatus\zerocount + \buildeqalign + \presetdisplaymath + \tabskip\centering} + +\def\prepareleqalignno + {\!!toksa{\strut\firstineqalign\hfil\leftofeqalign\span\mathineqalign{##}\rightofeqalign\tabskip\zeropoint}% + \!!toksb{&\nextineqalign\leftofeqalign\span\mathineqalign{##}\rightofeqalign\tabskip\zeropoint}% + % problem: number is handled after rest and so ends up in the margin + \ifnum\mathraggedstatus=\plusone + \!!toksc{\hfil&\kern-\displaywidth\rlap{\span\textineqalign{##}}\tabskip\displaywidth}% + \else\ifnum\mathraggedstatus=\plusthree + \!!toksc{\hfil\tabskip\zeropoint\!!plus 1\!!fill&\kern-\displaywidth\span\mrlap{\span\textineqalign{##}}\tabskip\displaywidth}% + \else + \!!toksc{\hfil\tabskip\centering&\kern-\displaywidth\rlap{\span\textineqalign{##}}\tabskip\displaywidth}% + \fi\fi + \global\chardef\mathnumberstatus\zerocount + \buildeqalign + \presetdisplaymath + \tabskip\centering} + +\def\dobotheqalignno#1#2% + {\ifmmode + \displ@y % \let\doplaceformulanumber\relax % strange hack + \vcenter\bgroup + \let\finishalignno\egroup + \else + \let\finishalignno\relax + \fi + #1% + \halign \ifcase\eqalignmode \or to \displaywidth \fi \@EA {\the\scratchtoks\crcr#2\crcr}% + \finishalignno} + +\def\dobothaligneqalignno#1% + {\ifmmode + \displ@y + \global\chardef\mathnumberstatus\plusone + \ifcase\mathraggedstatus + \def\finishalignno{\crcr\egroup}% + \else + % we're in a mathbox + \vcenter\bgroup + \def\finishalignno{\crcr\egroup\egroup}% + \fi + \fi + #1% + \halign \ifcase\eqalignmode \or to \displaywidth \fi \@EA \bgroup\the\scratchtoks\crcr} + +\def\mrlap#1% + {\setbox\scratchbox\hbox{#1}% + \ifdim\wd\scratchbox>\mathnumbercorrection + \xdef\mathnumbercorrection{\the\wd\scratchbox}% + \fi + \box\scratchbox + \global\chardef\mathnumberstatus\plustwo} + +% \def\dobothaligneqalignno#1% +% {\ifmmode +% \displ@y +% \global\chardef\mathnumberstatus\plusone +% we're in a mathbox +% \vcenter\bgroup +% \def\finishalignno{\crcr\egroup\egroup}% +% \else +% \def\finishalignno{\crcr\egroup}% +% \fi +% #1% +% \halign \ifcase\eqalignmode \or to \displaywidth \fi \@EA \bgroup\the\scratchtoks\crcr} + +\def\reqalignno {\dobotheqalignno \preparereqalignno} +\def\leqalignno {\dobotheqalignno \prepareleqalignno} +\def\alignreqalignno{\dobothaligneqalignno\preparereqalignno} +\def\alignleqalignno{\dobothaligneqalignno\prepareleqalignno} +\def\finishalignno {\crcr\egroup} + +\let \equalignno \reqalignno +\let\aligneqalignno\alignreqalignno + +%D Here we implement the user interface part. + +\def\setupmathalignment + {\dodoubleempty\dosetupmathalignment} + +\def\dosetupmathalignment[#1][#2]% + {\ifsecondargument + \getparameters[\??eq#1][#2]% + \else + \getparameters[\??eq][#1]% + \fi} + +\let\currentmathalignment\empty + +\def\mathalignmentparameter#1% + {\executeifdefined{\??eq\currentmathalignment#1}{\executeifdefined{\??eq#1}\empty}} + +\setupmathalignment + [\c!n=2, + \c!m=1, + \c!distance=1em] + +\def\numberedeqalign + {\doifelse\@@fmlocation\v!left\alignleqalignno\alignreqalignno} + +\def\doxxdoubleempty#1#2% + {\ifx#2[\expandafter\dodoxxdoubleempty\else\expandafter\noxxdoubleempty\fi#1#2} + +\def\dodoxxdoubleempty#1[#2]#3% + {\ifx#3[\else\expandafter\nonoxxdoubleempty\fi#1[#2]#3} + +\def\noxxdoubleempty #1{#1[][]} +\def\nonoxxdoubleempty#1[#2]{#1[#2][]} + +\newcount\eqaligncolumn + +\def\firstineqalign{\global\eqaligncolumn\plusone} +\def\nextineqalign {\global\advance\eqaligncolumn\plusone} +\def\leftofeqalign {\getvalue{\??eq:\v!left :\number\eqaligncolumn}} +\def\rightofeqalign{\getvalue{\??eq:\v!right:\number\eqaligncolumn}} + +\def\doseteqaligncolumn#1% + {\letvalue{\??eq:\v!left :\number\eqaligncolumn}\empty + \letvalue{\??eq:\v!right:\number\eqaligncolumn}\empty + \doif{#1}\v!left {\letvalue{\??eq:\v!right:\number\eqaligncolumn}\hfill}% + \doif{#1}\v!right {\letvalue{\??eq:\v!left :\number\eqaligncolumn}\hfill}% + \doif{#1}\v!middle{\letvalue{\??eq:\v!right:\number\eqaligncolumn}\hfill + \letvalue{\??eq:\v!left :\number\eqaligncolumn}\hfill}} + +\def\dodoalignNC + {\gdef\doalignNC##1{&##1}} + +\def\doalignNR[#1][#2]% + {\donestedformulanumber{#1}{#2}\crcr} + +%D \starttyping +%D \placeformula[eqn0]\startformula \startalign[n=1] a\NR \stopalign \stopformula See \in[eqn0] +%D \placeformula[eqn1]\startformula \startalign[n=1] a\NR \stopalign \stopformula See \in[eqn1] +%D \placeformula \startformula \startalign[n=1] a\NR[eqn2] \stopalign \stopformula See \in[eqn2] +%D \placeformula[eqn3]\startformula \startalign[n=1] a\NR[+] \stopalign \stopformula See \in[eqn3] +%D \stoptyping + +% todo: pop in cell + +\def\dostartmathalignment[#1][#2]% + {% \begingroup not permitted ($$...assignments...\halign... ) + \pushmacro\doalignNC + \edef\currentmathalignment{#1}% + \doifassignmentelse{#2}{\setupmathalignment[#1][#2]}\donothing + \def\NC{\doalignNC}% + \global\let\doalignNC\dodoalignNC + \def\EQ{&=}% + \def\NR{&\global\let\doalignNC\dodoalignNC\doxxdoubleempty\doalignNR}% + % amstex compatibility mode: (ugly, will disappear) + \def\notag{\def\\{&\crcr}}% + \doifelse{#2}{*}{\def\\{&\crcr}}{\def\\{&\doalignNR[+][]\crcr}}% + % end of compatibility mode + \eqaligncolumn\zerocount + \processcommacommand + [\mathalignmentparameter\c!align] + {\advance\eqaligncolumn\plusone\doseteqaligncolumn}% takes argument + % the real action + \global\eqaligncolumn\plusone + \numberedeqalign} + +\def\dostopmathalignment + {\finishalignno + \popmacro\doalignNC} + +\def\definemathalignment + {\dodoubleempty\dodefinemathalignment} + +\def\dodefinemathalignment[#1]% [#2]% + {\setvalue{\e!start#1}{\dodoubleempty\dostartmathalignment[#1]}% + \setvalue{\e!stop #1}{\dostopmathalignment}% + \setupmathalignment[#1]}% [#2] + +%D For the moment we only provide english commands. + +\definemathalignment[align] % default case (this is what amstex users expect) +\definemathalignment[\v!mathalignment] % prefered case (this is cleaner, less clashing) + +%D \startbuffer +%D \placeformula \startformula \eqalignno { +%D a &= b & \formulanumber \cr +%D c &= d \cr +%D &= e \cr +%D &= f & \formulanumber +%D } \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign +%D \NC a \EQ b \NR[+] +%D \NC c \EQ d \NR +%D \NC \EQ f \NR[for:demo-a-1] +%D \NC \EQ g \NR[for:demo-a-2][a] +%D \NC \EQ h \NR[for:demo-a-3][b] +%D \NC \EQ i \NR +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign +%D \NC a \EQ b \NR[+] +%D \NC c \EQ d \NR +%D \NC \EQ f \NR +%D \NC \EQ g \NR +%D \NC \EQ h \NR +%D \NC \EQ i \NR[+] +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign +%D a &= b \\ +%D c &= d \notag \\ +%D &= e \notag \\ +%D &= f \\ +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign +%D \NC a \NC \eq b \NR[+] +%D \NC c \NC \neq d \NR +%D \NC \NC \neq f \NR[for:demo-b-1] +%D \NC \NC \geq g \NR[for:demo-b-2][a] +%D \NC \NC \leq h \NR[for:demo-b-3][b] +%D \NC \NC \neq i \NR +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign[*] +%D a &= b \\ +%D c &= d \\ +%D &= e \\ +%D &= f \\ +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign +%D x &= y \\ +%D a &= b \\ +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign[m=3] +%D x &= y & x &= y & z &= t \\ +%D a &= b & p &= q & w &= s \\ +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign[m=3,distance=0pt] +%D x &= y &= x &= y &= z &= t \\ +%D a &= b &= p &= q &= w &= s \\ +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign[n=5,distance=0pt] +%D x &= yy &= xx &= yy &= zz \\ +%D a &= b &= p &= q &= w \\ +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign[n=3,align={left,middle,right}] +%D \NC l \NC = \NC r \NR +%D \NC left \NC = \NC right \NR +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign[n=3,align={right,middle,left}] +%D \NC l \NC = \NC r \NR +%D \NC left \NC = \NC right \NR +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startalign[n=3,align={middle,middle,middle}] +%D \NC l \NC = \NC r \NR +%D \NC left \NC = \NC right \NR +%D \stopalign \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula +%D \startformula +%D \startalign[n=3,align={middle,middle,middle}] +%D \NC a \NC = \NC b \NR[+] +%D \NC 2a \NC = \NC 2b \NR +%D \stopalign +%D \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula +%D \startformulas +%D \setupmathalignment[n=3,align={middle,middle,middle}]% +%D \startformula +%D \startalign +%D \NC a \NC = \NC b \NR[+] +%D \NC 2a \NC = \NC 2b \NR +%D \stopalign +%D \stopformula +%D \startformula +%D \startalign +%D \NC a \NC = \NC b \NR[+] +%D \NC 2a \NC = \NC 2b \NR +%D \stopalign +%D \stopformula +%D \stopformulas +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula +%D \startformulas +%D \dorecurse{5}{\startformula +%D \startalign[n=3,align={middle,middle,middle}] +%D \NC a \NC = \NC b \NR[+] +%D \NC 2a \NC = \NC 2b \NR +%D \stopalign +%D \stopformula} +%D \stopformulas +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +%D \macros +%D {definemathcases, setupmathcases, startmathcases} +%D +%D Another wish \unknown + +\def\setupmathcases + {\dodoubleempty\dosetupmathcases} + +\def\dosetupmathcases[#1][#2]% + {\ifsecondargument + \getparameters[\??ce#1][#2]% + \else + \getparameters[\??ce][#1]% + \fi} + +\let\currentmathcases\empty + +\def\mathcasesparameter#1% + {\executeifdefined{\??ce\currentmathcases#1}{\executeifdefined{\??ce#1}\empty}} + +\setupmathcases + [\c!distance=1em, + \c!numberdistance=2.5em, + \c!left={\left\{\,}, + \c!right={\right.}] + +\def\dodocasesNC + {\gdef\docasesNC{\endmath&}} + +\let\docasesNR\doalignNR + +\def\dostartmathcases[#1][#2]% + {\begingroup + \edef\currentmathcases{#1}% + \doifassignmentelse{#2}{\setupmathcases[#1][#2]}\donothing + \mathcasesparameter\c!left + \vcenter\bgroup + \pushmacro\docasesNC + \let\endmath\relax + \def\NC{\docasesNC}% + \def\MC{\docasesNC\ifmmode\else$\def\endmath{$}\fi}% + \global\let\docasesNC\dodocasesNC + \def\NR{\unskip\endmath&\global\let\docasesNC\dodocasesNC\doxxdoubleempty\docasesNR}% + \normalbaselines + \mathsurround\zeropoint + \everycr\emptytoks + \tabskip\zeropoint + \global\eqaligncolumn\plusone + \halign\bgroup + $\mathcasesparameter\c!style##$\hfil + &\hskip\mathcasesparameter\c!distance\relax + \popmacro\docasesNC##\hfil + &\hskip\mathcasesparameter\c!numberdistance\relax + \let\formuladistance\!!zeropoint + \span\textineqalign{##}% + \crcr} % todo: number + +\def\dostopmathcases + {\crcr + \egroup + \popmacro\docasesNC + \egroup + \mathcasesparameter\c!right + \endgroup} + +\def\definemathcases + {\dodoubleempty\dodefinemathcases} + +\def\dodefinemathcases[#1]% [#2]% + {\setvalue{\e!start#1}{\dodoubleempty\dostartmathcases[#1]}% + \setvalue{\e!stop #1}{\dostopmathcases}% + \setupmathcases[#1]}% [#2] + +\definemathcases[cases] +\definemathcases[\v!mathcases] + +%D \startbuffer +%D \placeformula \startformula \startcases +%D \NC 2 \NC $ y > 0 $ \NR +%D \NC 7 \NC $ x = 7 $ \NR[+] +%D \NC 4 \NC otherwise \NR +%D \stopcases \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula x \startcases +%D \NC 2 \NC $ y > 0 $ \NR[+] +%D \NC 7 \NC $ x = 7 $ \NR +%D \NC 4 \NC otherwise \NR +%D \stopcases \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula \startcases +%D \NC 2 \NC $ y > 0 $ \NR +%D \NC 7 \NC $ x = 7 $ \NR +%D \NC 4 \NC otherwise \NR +%D \stopcases \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \placeformula \startformula x \startcases +%D \NC 2 \NC $ y > 0 $ \NR +%D \NC 7 \NC $ x = 7 $ \NR +%D \NC 4 \NC otherwise \NR +%D \stopcases \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +%D \macros +%D {definemathmatrix, setupmathmatrix, startmathmatrix} +%D +%D Yet another one \unknown + +\def\setupmathmatrix + {\dodoubleempty\dosetupmathmatrix} + +\def\dosetupmathmatrix[#1][#2]% + {\ifsecondargument + \getparameters[\??mx#1][#2]% + \else + \getparameters[\??mx][#1]% + \fi} + +\let\currentmathmatrix\empty + +\def\mathmatrixparameter#1% + {\executeifdefined{\??mx\currentmathmatrix#1}{\executeifdefined{\??mx#1}\empty}} + +\setupmathmatrix + [\c!distance=1em, + \c!left=, + \c!right=, + \c!align=\v!middle] + +\def\dosetmatrixcolumn#1% hh: todo: \definematrixalign + {\letvalue{\??eq:\v!left :\number\eqaligncolumn}\hfil + \letvalue{\??eq:\v!right:\number\eqaligncolumn}\hfil + \doif{#1}\v!left {\letvalue{\??eq:\v!left :\number\eqaligncolumn}\relax + \letvalue{\??eq:\v!right:\number\eqaligncolumn}\hfil}% + \doif{#1}\v!right {\letvalue{\??eq:\v!left :\number\eqaligncolumn}\hfil + \letvalue{\??eq:\v!right:\number\eqaligncolumn}\relax }% + \doif{#1}\v!middle{\letvalue{\??eq:\v!left :\number\eqaligncolumn}\hfil + \letvalue{\??eq:\v!right:\number\eqaligncolumn}\hfil}} + +\def\buildmathmatrix % beware: etex only + {\scratchtoks\emptytoks + \expanded{\scratchtoks{\the\scratchtoks\the\!!toksa}}% + \dorecurse{\numexpr\scratchcounter-\plusone\relax} + {\expanded{\scratchtoks{\the\scratchtoks\the\!!toksb}}}% + \expanded{\scratchtoks{\the\scratchtoks\the\!!toksc }}} + +\def\preparemathmatrix + {\!!toksa{\strut \firstineqalign\leftofeqalign \span + \textineqalign{\mathmatrixparameter\c!style ##}\rightofeqalign}% + \!!toksb{&\hskip\mathmatrixparameter\c!distance + \nextineqalign\leftofeqalign \span + \textineqalign{\mathmatrixparameter\c!style ##}\rightofeqalign}% + \!!toksc{&&\hskip\mathmatrixparameter\c!distance + \leftofeqalign \span + \textineqalign{\mathmatrixparameter\c!style ##}\rightofeqalign}% + \buildmathmatrix + \halign \@EA \bgroup\the\scratchtoks \crcr} + +\def\definemathmatrix + {\dodoubleempty\dodefinemathmatrix} + +\def\dodefinemathmatrix[#1]% [#2]% + {\setvalue{\e!start#1}{\dodoubleempty\dostartmathmatrix[#1]}% + \setvalue{\e!stop #1}{\dostopmathmatrix}% + \setupmathmatrix[#1]}% [#2] + +\definemathmatrix[matrix] +\definemathmatrix[\v!mathmatrix] + +\def\dodomatrixNC + {\gdef\domatrixNC{\endmath&}} + +\def\installmathmatrixhandler#1#2% + {\setvalue{\??mx:#1}{#2}} + +% First alternative: +% +% \def\processlowhighmathmatrix#1% +% {\def\mathmatrixleft +% {\setbox\nextbox} +% \def\mathmatrixright +% {#1.5\dimexpr\nextboxdp-\nextboxht\relax +% \hbox{$\mathmatrixparameter\c!left +% \vcenter{\unvbox\nextbox}% +% \mathmatrixparameter\c!right$}}% +% \let\mathmatrixbox\vbox} +% +% \installmathmatrixhandler\v!high {\processlowhighmathmatrix\raise} +% \installmathmatrixhandler\v!low {\processlowhighmathmatrix\lower} +% +% \installmathmatrixhandler\v!top {\processlowhighmathmatrix\raise} +% \installmathmatrixhandler\v!bottom{\processlowhighmathmatrix\lower} +% +% \installmathmatrixhandler\v!lohi +% {\def\mathmatrixleft {\mathmatrixparameter\c!left}% +% \def\mathmatrixright{\mathmatrixparameter\c!right}% +% \let\mathmatrixbox\vcenter} +% +% An alternative +% +% \let\mathmatrixleft \empty +% \let\mathmatrixright\empty +% +% \def\processlowhighmathmatrix#1% +% {\dowithnextbox +% {#1.5\dimexpr\nextboxdp-\nextboxht\relax +% \hbox{$\mathmatrixparameter\c!left +% \vcenter{\unvbox\nextbox}% +% \mathmatrixparameter\c!right$}}% +% \vbox} +% +% \def\processlohimathmatrix +% {\dowithnextbox +% {\mathmatrixparameter\c!left +% \vcenter{\unvbox\nextbox}% +% \mathmatrixparameter\c!right}% +% \vbox} +% +% \installmathmatrixhandler\v!high {\def\mathmatrixbox{\processlowhighmathmatrix\raise}} +% \installmathmatrixhandler\v!low {\def\mathmatrixbox{\processlowhighmathmatrix\lower}} +% \installmathmatrixhandler\v!top {\def\mathmatrixbox{\processlowhighmathmatrix\raise}} +% \installmathmatrixhandler\v!bottom{\def\mathmatrixbox{\processlowhighmathmatrix\lower}} +% \installmathmatrixhandler\v!lohi {\let\mathmatrixbox \processlohimathmatrix} +% +% Final version + +\let\mathmatrixleft \empty % experimental hook +\let\mathmatrixright\empty % experimental hook + +\def\processlowhighmathmatrix#1#2% + {\dowithnextbox + {\scratchdimen\dimexpr(\nextboxdp-\nextboxht)/2 \ifcase#2\or+\mathaxisheight\textfont2\fi\relax + \ifcase#1\relax\or\lower\scratchdimen\or\or\raise\scratchdimen\fi + \hbox{$\mathmatrixparameter\c!left + \vcenter{\unvbox\nextbox}% + \mathmatrixparameter\c!right$}}% + \vbox} + +\installmathmatrixhandler\v!top {\def\mathmatrixbox{\processlowhighmathmatrix\plusthree\plusone }} +\installmathmatrixhandler\v!high {\def\mathmatrixbox{\processlowhighmathmatrix\plusthree\zerocount}} +\installmathmatrixhandler\v!lohi {\def\mathmatrixbox{\processlowhighmathmatrix\plustwo \zerocount}} +\installmathmatrixhandler\v!low {\def\mathmatrixbox{\processlowhighmathmatrix\plusone \zerocount}} +\installmathmatrixhandler\v!bottom{\def\mathmatrixbox{\processlowhighmathmatrix\plusone \plusone }} + +\def\dostartmathmatrix[#1][#2]% + {\begingroup + \edef\currentmathmatrix{#1}% + \doifassignmentelse{#2}{\setupmathmatrix[#1][#2]}\donothing + \null + \executeifdefined{\??mx:\mathmatrixparameter\c!location}{\getvalue{\??mx:\v!lohi}}% + \mathmatrixleft + \mathmatrixbox\bgroup + \pushmacro\domatrixNC + \let\endmath\relax + \def\NC{\domatrixNC}% + \def\MC{\domatrixNC\ifmmode\else$\def\endmath{$}\fi}% + \global\let\domatrixNC\dodomatrixNC + \def\NR{\endmath\global\let\domatrixNC\dodomatrixNC\crcr}% + \normalbaselines + \mathsurround\zeropoint + \everycr\emptytoks + \tabskip\zeropoint + \eqaligncolumn\zerocount % could be \scratchcounter + \processcommacommand[\mathmatrixparameter\c!align]{\advance\eqaligncolumn\plusone\dosetmatrixcolumn}% + \scratchcounter=\ifnum\eqaligncolumn>\zerocount \eqaligncolumn \else \plusone \fi + \global\eqaligncolumn\plusone + \preparemathmatrix } % uses scratchcounter + +\def\dostopmathmatrix + {\crcr + \mathstrut\crcr + \noalign{\kern-\baselineskip}% + \egroup + \popmacro\domatrixNC + \egroup + \mathmatrixright + \endgroup} + +%D \startbuffer +%D \placeformula \startformula[-] \startmatrix +%D \NC 1 \NC x \NC a \NR +%D \NC 2 \NC y \NC b \NR +%D \NC 3 \NC z \NC c \NR +%D \stopmatrix \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \definemathmatrix[bmatrix][left={\left[\,},right={\,\right]}] +%D +%D \startbuffer +%D \placeformula \startformula[-] \startbmatrix +%D \NC 1 \NC x \NC a \NR +%D \NC 2 \NC y \NC b \NR +%D \NC 3 \NC z \NC c \NR +%D \stopbmatrix \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D Taco added some code (dedicated to Aditya Mahajan) that gives more +%D control over aligments: + +%D \startbuffer +%D \startformula +%D \startmatrix +%D \NC a + x \NC = \NC a + d \NR +%D \NC y \NC = \NC d \NR +%D \stopmatrix +%D \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +%D \startbuffer +%D \startformula +%D \startmatrix [distance=3pt,align={right,left}] +%D \NC a + x \NC = a + d \NR +%D \NC y \NC = d \NR +%D \stopmatrix +%D \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +%D \startbuffer +%D \startformula +%D \startmatrix [left=\left(,right=\right)] +%D \NC a + x \NR +%D \NC y \NR +%D \stopmatrix +%D \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D A bit more complex code: +%D +%D \startbuffer +%D \startformula +%D \text{Let }{\cal R} = \bigcup_{P_{X_1},P_{X_2}} +%D \left\{ (R_1, R_2) : +%D \startmatrix[distance=1em,align={left,left,right}] +%D \NC R_1 \NC < I(X_1 ; Y \mid X_2) \NC R_1 \NR +%D \NC \hfill Q_2 \NC < I(X_2 ; Y \mid X_1) \NC R_2 \NR +%D \NC R_1 + R_2 \NC < I(X_1 ; Y) \NC R_1 + R_2 \NR +%D \stopmatrix +%D \right\} +%D \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +%D \macros +%D {startmatrices} +%D +%D Just a handy keystroke safer: + +\def\startmatrices + {\begingroup + \setupmathmatrix} + +\def\stopmatrices + {\endgroup} + +%D \startbuffer +%D \startformula +%D \startmatrix[left={\left(},right={\right)}] +%D \NC A \NC B \NR \NC C \NC D \NR +%D \stopmatrix +%D = +%D \startmatrix[left={\left(},right={\right)},location=low] +%D \NC A \NC B \NR \NC C \NC D \NR +%D \stopmatrix +%D = +%D \startmatrix[left={\left(},right={\right)},location=high] +%D \NC A \NC B \NR \NC C \NC D \NR +%D \stopmatrix +%D \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D \startbuffer +%D \startformula +%D \startmatrices[left={\left(},right={\right)}] +%D \startmatrix +%D \NC A \NC B \NR \NC C \NC D \NR +%D \stopmatrix +%D = +%D \startmatrix[location=bottom] +%D \NC A \NC B \NR \NC C \NC D \NR +%D \stopmatrix +%D = +%D \startmatrix[location=top] +%D \NC A \NC B \NR \NC C \NC D \NR +%D \stopmatrix +%D \stopmatrices +%D \stopformula +%D \stopbuffer +%D +%D \typebuffer \getbuffer + +%D \macros +%D {startintertext} +%D +%D Preliminary feature: +%D +%D {\em example code} + +\def\startintertext#1\stopintertext + {\noalign{\dointertext{#1}}} + +\def\intertext#1% + {\noalign{\dointertext{#1}}} + +\unexpanded\def\dointertext#1% + {\penalty\postdisplaypenalty + \afterdisplayspace + \vbox{\forgetall\noindent#1\par}% + \penalty\predisplaypenalty + \beforedisplayspace} + +% %D \macros +% %D {substack} +% %D +% %D Preliminary code: +% %D +% %D \starttyping +% %D \startformula +% %D \sum_{% +% %D \startsubstack +% %D i = 1 \NR +% %D i \neq n \NR +% %D i \neq m +% %D \stopsubstack +% %D }a_i +% %D \stopformula +% %D \stoptyping + +% \def\startsubstack +% {\begingroup +% \null +% \vcenter\bgroup +% \pushmacro\domatrixNC +% \let\stopmathmode\relax +% \def\NC{\domatrixNC}% +% \def\MC{\domatrixNC\startmathmode}% +% \global\let\domatrixNC\dodomatrixNC +% \def\NR +% {\stopmathmode +% \global\let\domatrixNC\dodomatrixNC +% \crcr\noalign{\nointerlineskip}}% +% \mathsurround\zeropoint +% \everycr\emptytoks +% \halign\bgroup\hfil$\scriptstyle\mathstrut##$\hfil\crcr} + +% \def\stopsubstack +% {\crcr +% \egroup +% \popmacro\domatrixNC +% \egroup +% \endgroup} + +%D \macros +%D {substack} +%D +%D Preliminary code: +%D +%D \startbuffer +%D \startformula +%D \sum_{% +%D \startsubstack +%D i = 1 \NR +%D i \neq n \NR +%D i \neq m +%D \stopsubstack +%D }a_i +%D \stopformula +%D \stopbuffer +%D +%D \getbuffer which was typed as \typebuffer +%D +%D Notice that these macros give the correct spacing for +%D subscripts. Compare for example +%D +%D \startbuffer +%D \startformula +%D \sum_{\startsubstack a \NR b \NR \stopsubstack} +%D \text{ and } +%D \sum_{\scriptstyle a \atop \scriptstyle} +%D \stopformula +%D \typebuffer which gives \getbuffer + +\def\startsubstack + {\begingroup + \vcenter\bgroup + \baselineskip\mathstacktotal + \lineskip\mathstackvgap + \lineskiplimit\lineskip + \let\stopmathmode\relax + \def\NC{\domatrixNC}% + \def\MC{\domatrixNC\startmathmode}% + \global\let\domatrixNC\dodomatrixNC + \def\NR + {\stopmathmode + \global\let\domatrixNC\dodomatrixNC + \crcr}% + \mathsurround\zeropoint + \everycr\emptytoks + \halign\bgroup\hfil$\scriptstyle##$\hfil\crcr} + +\def\stopsubstack + {\crcr + \egroup + \egroup + \endgroup} + +%D \macros +%D {frac, xfrac, xxfrac} +%D +%D This is another one Tobias asked for. It replaces the +%D primitive \type {\over}. We also take the opportunity to +%D handle math style restoring, which makes sure units and +%D chemicals come out ok. +%D +%D \starttyping +%D \def\frac#1#2% +%D {\relax +%D \ifmmode +%D {{\mathstyle{#1}}\over{\mathstyle{#2}}}% +%D \else +%D $\frac{#1}{#2}$% +%D \fi} +%D \stoptyping +%D +%D Better is: +%D +%D \starttyping +%D \def\frac#1#2% +%D {\relax\mathematics{{{\mathstyle{#1}}\over{\mathstyle{#2}}}}} +%D \stoptyping +%D +%D The \type {\frac} macro kind of replaces the awkward \type +%D {\over} primitive. Say that we have the following formulas: +%D +%D \startbuffer[sample] +%D test $\frac {1}{2}$ test $$1 + \frac {1}{2} = 1.5$$ +%D test $\xfrac {1}{2}$ test $$1 + \xfrac {1}{2} = 1.5$$ +%D test $\xxfrac{1}{2}$ test $$1 + \xxfrac{1}{2} = 1.5$$ +%D \stopbuffer +%D +%D \typebuffer[sample] +%D +%D With the most straightforward definitions, we get: +%D +%D \startbuffer[code] +%D \def\dofrac#1#2#3{\relax\mathematics{{{#1{#2}}\over{#1{#3}}}}} +%D +%D \def\frac {\dofrac\mathstyle} +%D \def\xfrac {\dofrac\scriptstyle} +%D \def\xxfrac{\dofrac\scriptscriptstyle} +%D \stopbuffer +%D +%D \typebuffer[code] \getbuffer[code,sample] +%D +%D Since this does not work well, we can try: +%D +%D \startbuffer[code] +%D \def\xfrac #1#2{\hbox{$\dofrac\scriptstyle {#1}{#2}$}} +%D \def\xxfrac#1#2{\hbox{$\dofrac\scriptscriptstyle{#1}{#2}$}} +%D \stopbuffer +%D +%D \typebuffer[code] \getbuffer[code,sample] +%D +%D This for sure looks better than: +%D +%D \startbuffer[code] +%D \def\xfrac #1#2{{\scriptstyle \dofrac\relax{#1}{#2}}} +%D \def\xxfrac#1#2{{\scriptscriptstyle\dofrac\relax{#1}{#2}}} +%D \stopbuffer +%D +%D \typebuffer[code] \getbuffer[code,sample] +%D +%D So we stick to the next definitions (watch the local +%D overloading of \type {\xfrac}). + +\def\dofrac#1#2#3{\relax\mathematics{{{#1{#2}}\over{#1{#3}}}}} + +% \unexpanded\def\frac +% {\dofrac\mathstyle} +% +% \chardef\mathfracmode=0 $\frac{1}{2}$ +% \chardef\mathfracmode=1 $\frac{1}{2}$ +% \chardef\mathfracmode=2 $\frac{1}{2}$ +% \chardef\mathfracmode=3 $\frac{1}{2}$ +% \chardef\mathfracmode=4 $\frac{1}{2}$ +% \chardef\mathfracmode=5 $\frac{1}{2}$ + +\chardef\mathfracmode=0 % 0=mathstyle, 1=displaystyle, 2=textstyle, 3=scriptstyle, 4=scriptscriptstyle + +\unexpanded\def\frac + {\ifcase\mathfracmode + \expandafter\dofrac\expandafter\mathstyle + \or + \expandafter\dofrac\expandafter\displaystyle + \or + \expandafter\dofrac\expandafter\textstyle + \or + \expandafter\dofrac\expandafter\scriptstyle + \or + \expandafter\dofrac\expandafter\scriptscriptstyle + \else + \expandafter\dofrac\expandafter\mathstyle + \fi} + +\unexpanded\def\xfrac#1#2% + {\begingroup + \let\xfrac\xxfrac + \dofrac\scriptstyle{#1}{#2}% + \endgroup} + +\unexpanded\def\xxfrac#1#2% + {\begingroup + \dofrac\scriptscriptstyle{#1}{#2}% + \endgroup} + +%D The \type {xx} variant looks still ugly, so maybe it's +%D best to say: + +\unexpanded\def\xxfrac#1#2% + {\begingroup + \dofrac\scriptscriptstyle{#1}{\raise.25ex\hbox{$\scriptscriptstyle#2$}}% + \endgroup} + +%D Something low level for scientific calculator notation: + +\unexpanded\def\scinot#1#2% + {#1\times10^{#2}} + +%D The next macro, \type {\ch}, is \PPCHTEX\ aware. In +%D formulas one can therefore best use \type {\ch} instead of +%D \type {\chemical}, especially in fractions. + +\ifx\mathstyle\undefined + \let\mathstyle\relax +\fi + +\unexpanded\def\ch#1% + {\ifx\@@chemicalletter\undefined + \mathstyle{\rm#1}% + \else + \dosetsubscripts + \mathstyle{\@@chemicalletter{#1}}% + \doresetsubscripts + \fi} + +%D \macros +%D {/} +%D +%D Just to be sure, we restore the behavior of some typical +%D math characters. + +\bgroup + +\catcode`\/=\@@other \global \let\normalforwardslash/ +\catcode`\/=\@@active \doglobal\appendtoks\let/\normalforwardslash\to\everymathematics + +\egroup + +%D These macros were first needed by Frits Spijker (also +%D known as Gajes) for typesetting the minus sign that is +%D keyed into scientific calculators. + +% This is the first alternative, which works okay for the +% minus, but less for the plus. +% +% \def\dodoraisedmathord#1#2#3% +% {\mathord{{#2\raise.#1ex\hbox{#2#3}}}} +% +% \def\doraisedmathord#1% +% {\mathchoice +% {\dodoraisedmathord5\tf #1}% +% {\dodoraisedmathord5\tf #1}% +% {\dodoraisedmathord4\tfx #1}% +% {\dodoraisedmathord3\tfxx#1}} +% +% \def\negative{\doraisedmathord-} +% \def\positive{\doraisedmathord+} +% +% So, now we use the monospaced signs, that we also +% define as symbol, so that they can be overloaded. + +\def\dodoraisedmathord#1#2#3% + {\mathord{{#2\raise.#1ex\hbox{#2\symbol[#3]}}}} + +\def\doraisedmathord#1% + {\mathchoice + {\dodoraisedmathord5\tf {#1}}% + {\dodoraisedmathord5\tf {#1}}% + {\dodoraisedmathord4\tx {#1}}% + {\dodoraisedmathord3\txx{#1}}} + +\def\dodonumbermathord#1#2% + {\setbox\scratchbox\hbox{0}% + \mathord{\hbox to \wd\scratchbox{\hss#1\symbol[#2]\hss}}} + +\def\donumbermathord#1% + {\mathchoice + {\dodonumbermathord\tf {#1}}% + {\dodonumbermathord\tf {#1}}% + {\dodonumbermathord\tx {#1}}% + {\dodonumbermathord\txx{#1}}} + +\definesymbol[positive] [\getglyph{Mono}{+}] +\definesymbol[negative] [\getglyph{Mono}{-}] +\definesymbol[zeroamount][\getglyph{Mono}{-}] + +\def\negative {\doraisedmathord{negative}} +\def\positive {\doraisedmathord{positive}} +\def\zeroamount{\donumbermathord{zeroamount}} + +%D The following macros are used in the MathML interpreter, so +%D there is a good change of them never being documented for +%D other usage. + +\let\normalordelimiter\secondoftwoarguments +\let\normalorfiller \firstoftwoarguments + +\def\enabledelimiter {\let\normalordelimiter\secondoftwoarguments} +\def\disabledelimiter{\let\normalordelimiter\firstoftwoarguments} + +\def\enablefiller {\let\normalorfiller\secondoftwoarguments} +\def\disablefiller {\let\normalorfiller\firstoftwoarguments} + +\def\mathopnolimits#1{\mathop{\mr#1}\nolimits} % was \rm, which follows text fonts (used in mml parser) +\def\mathopdolimits#1{\mathop{\mr#1}} % was \rm, which follows text fonts (used in mml parser) + +%D \macros{overset, underset} +%D +%D The macros \type{\overset} and \type{\underset} are provided by +%D \AMS\ packages in \LATEX. These macro allows you to place a symbol +%D above or below another symbol, irrespective of whether the other +%D symbol is a relation or something else, and without influencing the +%D spacing. For most cases there is a better way to do such things +%D (declaring a math command with limop option, or using accents), but +%D occasionally these macros can be useful, for example: +%D +%D \startbuffer +%D \startformula +%D \overset{*}{X} \underset{*}{X} +%D \stopformula +%D \stopbuffer +%D \typebuffer \getbuffer +%D +%D Use these macros sparingly. Remember, \TEX\ was designed for +%D mathematics, so there is usually a proper method for typesetting +%D common math notation. + +%D These macros are a clearer version of \type{\binrel@} and +%D \type{\binrel@@} macros in \AMSTEX\ packages. + +\def\preparebinrel#1% + {\begingroup + \setbox\scratchbox\hbox + {\thinmuskip 0mu + \medmuskip -1mu + \thickmuskip -1mu + \setbox\scratchbox\hbox{$#1\mathsurround\zeropoint$}% + \kern-\wd\scratchbox + ${}#1{}\mathsurround\zeropoint$}% + \expanded + {\endgroup + \let\noexpand\currentbinrel + \ifdim\wd\scratchbox<\zeropoint + \mathbin + \else\ifdim\wd\scratchbox>\zeropoint + \mathrel + \else + \relax + \fi\fi}} + +\unexpanded\def\overset#1#2% + {\preparebinrel{#2}% + \currentbinrel{\mathop{\kern\zeropoint#2}\limits^{#1}}} + +\unexpanded\def\underset#1#2% + {\preparebinrel{#2}% + \currentbinrel{\mathop{\kern\zeropoint#2}\limits_{#1}}} + +%D \macros +%D {boldsymbol} +%D +%D The math definition is inspired by amsmath. +%D +%D \startbuffer +%D \definetypeface [boldmath] [mm] [boldmath] [latin-modern] [modern] [encoding=texnansi] +%D +%D $a \times b$ $a \boldsymbol{\times} b$ +%D \stopbuffer +%D +%D \typebuffer \start \getbuffer \stop + +\def\mathboldsymbol#1% + {\preparebinrel{#1}% + \currentbinrel{\mathchoice + {\hbox{\switchtoformulabodyfont [boldmath]$\mathsurround\zeropoint#1$}} + {\hbox{\switchtoformulabodyfont [boldmath]$\mathsurround\zeropoint#1$}} + {\hbox{\switchtoformulabodyfont [boldmath,script]$\mathsurround\zeropoint#1$}} + {\hbox{\switchtoformulabodyfont[boldmath,scriptscript]$\mathsurround\zeropoint#1$}}}} + +\def\boldsymbol + {\mathortext\mathboldsymbol\bold} + +%D Some encoding hackery (for Mojca. who else): +%D +%D \starttyping +%D \startmathcollection[eul:texnansi] +%D \definemathsymbol [breve] [accent] [tf] ["15] +%D \stopmathcollection +%D \startmathcollection[eul:ec] +%D \definemathsymbol [breve] [accent] [tf] ["08] +%D \stopmathcollection +%D +%D $\breve e$ +%D \stoptyping + +\let\outerencoding\empty + +\def\checkoutermathencoding + {\ifx\outerencoding\empty + \ifx\outerencoding\s!default\else + \edef\outerencoding{\currentencoding}% + \fi + \fi} + +\prependtoks + \checkoutermathencoding +\to \everymathematics + +%D More. (A temp hack, else no proper default fall back (like \type +%D {\textmultiply}); todo: sync encoding. + +\def\dealwithmathtextencoding + {\expanded{\everyhbox{\the\everyhbox\noexpand\fastenableencoding{\currentencoding}}}% + \expanded{\everyvbox{\the\everyvbox\noexpand\fastenableencoding{\currentencoding}}}% + \def\dealwithmathtextencoding{\let\characterencoding\nocharacterencoding}% + \dealwithmathtextencoding} + +\appendtoks + \dealwithmathtextencoding +\to \everymathematics + +%D How negative such a symbol looks is demonstrated in: +%D $\negative 10^{\negative 10^{\negative 10}}$. + +\setupformulas + [\c!way=\@@nrway, + \c!blockway=, + \c!sectionnumber=\@@nrsectionnumber, + \c!location=\v!right, + \c!left=(, + \c!right=), + \c!numberstyle=, + \c!numbercolor=, + \c!numbercommand=, + \c!spacebefore=\v!big, + \c!spaceafter=\@@fmspacebefore, + \c!grid=] + +\protect \endinput |