1 files changed, 24 insertions, 8 deletions
diff --git a/Master/texmf-dist/tex/generic/pst-func/pst-func.tex b/Master/texmf-dist/tex/generic/pst-func/pst-func.tex
index 3ced97eacaf..743e17c87ea 100644
--- a/Master/texmf-dist/tex/generic/pst-func/pst-func.tex
+++ b/Master/texmf-dist/tex/generic/pst-func/pst-func.tex
@@ -1,4 +1,4 @@
-%% $Id: pst-func.tex 883 2014-02-01 16:47:25Z herbert $
+%% $Id: pst-func.tex 892 2014-02-03 21:33:38Z herbert $
 %%
 %% This is file `pst-func.tex',
 %%
@@ -30,8 +30,8 @@
 % interface to the `xkeyval' package
 \pst@addfams{pst-func}
 %
-\def\fileversion{0.77}
-\def\filedate{2014/02/01}
+\def\fileversion{0.78}
+\def\filedate{2014/02/03}
 \message{`PST-func' v\fileversion, \filedate\space (hv)}
 %
 \pstheader{pst-func.pro}
@@ -43,6 +43,8 @@
 \def\ChebyshevU{ tx@FuncDict begin ChebyshevU end }
 
 %
+\define@key[psset]{pst-func}{epsilon}[1.e-08]{\def\psk@epsilon{#1 }}
+\psset[pst-func]{epsilon=1.e-08}
 \define@key[psset]{pst-func}{xShift}[0]{\def\psk@xShift{#1}}
 \psset[pst-func]{xShift=0}
 %
@@ -945,19 +947,33 @@
   \endgroup\ignorespaces}
 %
 \def\psWeierstrass{\pst@object{psWeierstrass}}
-\def\psWeierstrass@i(#1,#2)#3{%
+\def\psWeierstrass@i(#1,#2){\@ifnextchar[{\psWeierstrass@ii(#1,#2)}{\psWeierstrass@iii(#1,#2)}}
+\def\psWeierstrass@ii(#1,#2)[#3]#4{% #1 xStart; #2 xEnd; #3 a; #4 b  %% the original definition
   \addbefore@par{plotpoints=500}%
   \begin@SpecialObj
-  \psplot{#1}{#2}{
-    /ps@a #3 def
+  \psplot{#1}{#2}[/ps@a #3 def /ps@b #4 def]{
+    /ps@n 0 def
+    /ps@WS 0 def
+    { 
+      ps@a ps@n exp ps@b ps@n exp Pi mul x mul RadtoDeg cos mul 
+      dup abs \psk@epsilon gt { ps@WS add /ps@WS ED }{ ps@WS add exit } ifelse   
+      ps@n 1 add /ps@n ED
+    } loop
+  }%
+  \end@SpecialObj
+}
+\def\psWeierstrass@iii(#1,#2)#3{% #1 xStart; #2 xEnd; #3 a
+  \addbefore@par{plotpoints=500}%
+  \begin@SpecialObj
+  \psplot{#1}{#2}[/ps@a #3 def]{
     /ps@k 1 def
     /ps@WS 0 def
     { 
       ps@k ps@a exp Pi mul dup x mul RadtoDeg sin exch div 
-      dup abs 1e-8 gt { ps@WS add /ps@WS ED }{ ps@WS add exit } ifelse   
+      dup abs \psk@epsilon gt { ps@WS add /ps@WS ED }{ ps@WS add exit } ifelse   
       ps@k 1 add /ps@k ED
     } loop
-  }
+  }%
   \end@SpecialObj
 }
 %