polynom (9dec16)

git-svn-id: svn://tug.org/texlive/trunk@42664 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 38 insertions, 18 deletions

diff --git a/Master/texmf-dist/tex/latex/polynom/polynom.sty b/Master/texmf-dist/tex/latex/polynom/polynom.sty
index ca61d9eb5bf..95d49465ab0 100644
--- a/Master/texmf-dist/tex/latex/polynom/polynom.sty
+++ b/Master/texmf-dist/tex/latex/polynom/polynom.sty
@@ -62,12 +62,13 @@
 \define@key{pld}{style}
     {\@ifundefined{pld@style#1}%
          {\PackageError{polynom}{Unknown style `#1'}%
-          {Arguments can be `A' or `B' or `C'.}}%
+          {Arguments can be `A' or `B' or `C' or `D'.}}%
          {\let\pld@style=#1%
           \@nameuse{pld@style#1}}}
 \def\pld@styleA{\let\pld@iftopresult\iftrue}
 \def\pld@styleB{\let\pld@iftopresult\iffalse}
 \let\pld@styleC\pld@styleB
+\let\pld@styleD\pld@styleB
 \polyset{style=A}
 \define@key{pld}{delims}
     {\@ifnextchar[\pld@delims
@@ -713,6 +714,7 @@
     \let\pld@pattern\@empty \let\pld@lastline\@empty
     \let\pld@subline\@empty \let\pld@currentline\@empty
     \let\pld@allines\@empty \let\pld@maxcol\z@
+    \let\pld@maxcolplustwo\z@ \let\pld@linepos\z@
     \pld@true \pld@DivPoly#1#2%
     \pld@ArrangeResult#1}
 \def\pld@DivPoly#1#2{%
@@ -900,7 +902,11 @@
     \expandafter\pld@InsertItems@find\pld@pattern\relax&%
     \ifnum\pld@firstcol>\@tempcnta \edef\pld@firstcol{\the\@tempcnta}\fi
     \ifnum\pld@lastcol<\@tempcnta \edef\pld@lastcol{\the\@tempcnta}\fi
-    \ifnum\pld@maxcol<\@tempcnta \edef\pld@maxcol{\the\@tempcnta}\fi
+    \ifnum\pld@maxcol<\@tempcnta
+      \edef\pld@maxcol{\the\@tempcnta}
+      \@tempcntb\pld@maxcol\relax\advance\@tempcntb\tw@
+      \edef\pld@maxcolplustwo{\the\@tempcntb}
+    \fi
     \pld@InsertItems@do\pld@lastline{\pld@PLD{#3}}%
     \pld@InsertItems@do\pld@subline{\pld@PLD{#2}}%
     \pld@InsertItems@do\pld@currentline{\pld@PLD{#1}}}
@@ -967,8 +973,8 @@
         \def\pld@lastline{\pld@PrintPoly\pld@divisor\bigr)&}%
     \else
         \let\pld@lastline\@empty
-        \ifx B\pld@style\else
-            \def\pld@lastline{\pld@leftdelim\strut\pld@rightxdelim&}%
+        \ifx C\pld@style
+          \def\pld@lastline{\pld@leftdelim\strut\pld@rightxdelim&}%
         \fi
     \fi
     \expandafter\pld@AR@col\expandafter\pld@PLD
@@ -990,6 +996,9 @@
         \@tempcnta-\@tempcnta
         \advance\@tempcnta\pld@maxcol\relax \advance\@tempcnta\@ne
         \edef\pld@span{\the\@tempcnta}%
+        \@tempcntb\pld@maxcol\relax\advance\@tempcntb\pld@span%
+        \advance\@tempcntb\@ne%
+        \edef\pld@linepos{\the\@tempcntb}%
         \ifx B\pld@style
           \pld@AddTo\pld@lastline{%
             &\multispan\pld@span${}=%
@@ -1004,20 +1013,31 @@
             \pld@firstfalse
             \expandafter\pld@PrintRemain\expandafter{\pld@remainder}$}%
         \else
-          \pld@AddTo\pld@lastline{%
-            &\multispan\pld@span$\pld@leftxdelim\strut\pld@rightdelim
-            \pld@div
-            \pld@PrintPolyWithDelims\pld@divisor=
-            \pld@PrintPolyShadow
-            \ifx\pld@remainder\@empty\else
-                +{}%
-                \setbox\z@=\hbox{$\displaystyle
-                  \frac{\let\strut\@empty\pld@firsttrue \expandafter
-                        \pld@PrintRemain\expandafter{\pld@remainder}}%
-                       {\let\strut\@empty\pld@PrintPoly\pld@divisor}$}%
-                \dp\z@=\z@\box\z@
-            \fi
-            $}%
+          \if C\pld@style
+            \pld@AddTo\pld@lastline{%
+              &\multispan\pld@span$\pld@leftxdelim\strut\pld@rightdelim
+              \pld@div
+              \pld@PrintPolyWithDelims\pld@divisor=
+              \pld@PrintPolyShadow
+              \ifx\pld@remainder\@empty\else
+                  +{}%
+                  \setbox\z@=\hbox{$\displaystyle
+                    \frac{\let\strut\@empty\pld@firsttrue \expandafter
+                          \pld@PrintRemain\expandafter{\pld@remainder}}%
+                         {\let\strut\@empty\pld@PrintPoly\pld@divisor}$}%
+                  \dp\z@=\z@\box\z@
+              \fi
+              $}%
+          \else
+            \pld@AddTo\pld@lastline{%
+              \cr%
+              \noalign{\vskip-\normalbaselineskip}%
+              \multispan\pld@maxcol~&~&\multispan\pld@span${}\vrule~%
+              \pld@PrintPoly\pld@divisor\hfil\hfil$\cr%
+              \cline{\pld@maxcolplustwo-\pld@linepos}%
+              \multispan\pld@maxcol~&~&\multispan\pld@span${}\vrule height
+              2.25ex~\pld@PrintPolyShadow$\hfil\cr\noalign{\vskip-2\normalbaselineskip}}%
+          \fi
         \fi
     \fi
     \expandafter\pld@AR@\pld@allines\relax}