5 files changed, 24 insertions, 20 deletions
diff --git a/Master/texmf-dist/doc/generic/pst-ode/ChangeLog b/Master/texmf-dist/doc/generic/pst-ode/ChangeLog
index a8e8ba8eba0..eeefa106add 100644
--- a/Master/texmf-dist/doc/generic/pst-ode/ChangeLog
+++ b/Master/texmf-dist/doc/generic/pst-ode/ChangeLog
@@ -1,3 +1,7 @@
+2017-06-16
+	* version 0.10
+	* more diagnostic terminal output for stepsize underflow
+
 2017-06-14
 	* version 0.9
 	* fix: occasional failure of the stepping routine (zero relative error)
diff --git a/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.pdf b/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.pdf
index 05a448042ac..235fc7d3f54 100644
--- a/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.pdf
+++ b/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.pdf
diff --git a/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.tex b/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.tex
index be4749a9968..ec8e564189f 100644
--- a/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.tex
+++ b/Master/texmf-dist/doc/generic/pst-ode/pst-ode-doc.tex
@@ -149,7 +149,7 @@ Option \Lkeyword{silent} suppresses the terminal output of stepping information.
 
 The tolerance for the automatic integration step size calculation can be set with \Lkeyword{varsteptol} \Lkeyword{=}\Larg{value}. The default value is \Lkeyword{1e-6}.
 
-In the case of integration step size underflow, which  is indicated by writing `\Lkeyword{!}' to the terminal during PS to PDF conversion, the computation stops prematurely before reaching $t_\mathrm{e}$. This may happen for stiff ODEs at some point along the integration interval.\\[1ex]
+In the case of integration step size underflow, which  is indicated by writing `\Lkeyword{!}' to the terminal during PS to PDF conversion, the computation stops prematurely before reaching $t_\mathrm{e}$. The current value of $t$ and the current state vector $\mathbf{x}$ are written to the terminal. Step size underflow may happen for stiff ODEs at some point along the integration interval $[t_0, t_\mathrm{e}]$.\\[1ex]
 %It may be necessary to enlarge it using this option in cases that fail with `\Lkeyword{error: step size underflow in ODEINT}'.\\[1ex]
 
 \begin{BDef}
diff --git a/Master/texmf-dist/dvips/pst-ode/pst-ode.pro b/Master/texmf-dist/dvips/pst-ode/pst-ode.pro
index df404a2de86..28d0550dda2 100644
--- a/Master/texmf-dist/dvips/pst-ode/pst-ode.pro
+++ b/Master/texmf-dist/dvips/pst-ode/pst-ode.pro
@@ -1,7 +1,7 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %
 % PostScript prologue for pst-ode.tex.
-% Version 0.9, 2017/06/14
+% Version 0.10, 2017/06/16
 %
 % Alexander Grahn (C) 2012--today
 %
@@ -117,11 +117,9 @@ end
     %scaling vector for step size adjustment (Numerical Recipies)
     eabsvect k1 eabsvect addvect {1e-30 add} forall xlength array astore
     % => [x(t)] [x(t+ddt) by RKF4] [err] [xscale]
-    /errmax 0 def %maximum rel. error
+    /errmax 1e-30 def %maximum rel. error
     edivvect {abs dup errmax gt {/errmax exch def}{pop} ifelse} forall errmax
     % => [x(t)] [x(t+ddt) by RKF4] errmax
-    %Sometimes, the rel. error is zero (Why is that???). So we add 1e-30
-    1e-30 add
   end
 } bind def
 /ODEINT { % performs integration over output step [t,t+dt]
@@ -138,18 +136,17 @@ end
       exch pop pshrink exp 0.1 max sfty mul ddt mul /ddt exch def
       ode@dict tcur ddt add tcur end eq {
         % error: step size underflow in ODEINT
-        (! t=) odeprint tcur 256 string cvs odeprint
+        (! t=) odeprint tcur odeprint
+        % print & remove previous state vector
+        (, x=[ ) odeprint {odeprint ( ) odeprint} forall (]) odeprint
         true
       }{
         (-) odeprint
         false
       } ifelse
     end
-    % on step size underflow ...
-    {
-      pop  % remove previous state vector and
-      exit % leave loop over output steps (pst-ode.tex)
-    } if
+    % on step size underflow, leave loop over output steps (pst-ode.tex)
+    {exit} if
     ODEINT %repeat step with new ddt
   }{
     %success
@@ -168,12 +165,14 @@ end
   }ifelse
 } bind def
 /writeresult { %write output vector to file
-  {
-    256 string cvs statefile exch writestring
-    statefile ( ) writestring
-  } forall
+  /loopproc load forall
   statefile (\n) writestring
 } bind def
+/loopproc {
+  0 cvs statefile exch writestring
+  statefile ( ) writestring
+} bind def
+/loopproc load 0 256 string put
 /assembleresult { %assembles state vector for building table of results
   {
     dup (t) eq {
diff --git a/Master/texmf-dist/tex/generic/pst-ode/pst-ode.tex b/Master/texmf-dist/tex/generic/pst-ode/pst-ode.tex
index d5da5351236..d8f4e9eccca 100644
--- a/Master/texmf-dist/tex/generic/pst-ode/pst-ode.tex
+++ b/Master/texmf-dist/tex/generic/pst-ode/pst-ode.tex
@@ -11,8 +11,8 @@
 %% ODEs using the Runge-Kutta-Fehlberg (RKF45) method with automatic
 %% step size adjustment
 %%
-\def\fileversion{0.9}
-\def\filedate{2017/06/14}
+\def\fileversion{0.10}
+\def\filedate{2017/06/16}
 
 \csname PSTODELoaded\endcsname
 \let\PSTODELoaded\endinput
@@ -111,9 +111,10 @@
   \pstVerb{
     tx@odeDict begin
     \ifPstODE@silent
-      userdict /odeprint systemdict /pop get put
+      /odeprint systemdict /pop get def
     \else
-      userdict /odeprint {print flush} put
+      /odeprint {0 cvs print flush} def
+      /odeprint load 0 256 string put
     \fi
     /ode@tol \ode@varsteptol\space def % rel. tolerance for step size adjustment
     %process arguments
@@ -149,7 +150,7 @@
       } bind def
     \else
       /ODESET {
-        aload pop tx@Dict begin ode@foo begin #7 end end ode@dict xlength end array astore
+        aload pop tx@Dict begin 4 begin #7 end end ode@dict xlength end array astore
       } bind def
       %ensure local scope of user defined variables in #7, from BlueBook, p. 133
       /ODESET load 4 1 dict put