pgf revert again to r49607, after mistaken update

git-svn-id: svn://tug.org/texlive/trunk@51047 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 223 insertions, 223 deletions

diff --git a/Master/texmf-dist/tex/generic/pgf/math/pgfmathfunctions.misc.code.tex b/Master/texmf-dist/tex/generic/pgf/math/pgfmathfunctions.misc.code.tex
index bab8fefd4eb..9b807992787 100644
--- a/Master/texmf-dist/tex/generic/pgf/math/pgfmathfunctions.misc.code.tex
+++ b/Master/texmf-dist/tex/generic/pgf/math/pgfmathfunctions.misc.code.tex
@@ -11,116 +11,116 @@
 %
 % Version 1.414213 29/9/2007
 
-% veclen function adapted from ideas due to Rouben Rostamian.
+% veclen function adpated from ideas due to Rouben Rostamian.
 %
-% Calculate the Euclidean length of a 2D vector.
+% Calcluate the Eulidean length of a 2D vector.
 %
 %
-\pgfmathdeclarefunction{veclen}{2}{%
+\pgfmathdeclarefunction{veclen}{2}{%	
   \begingroup%
     \pgfmath@x#1pt\relax%
     \pgfmath@y#2pt\relax%
-        \ifdim\pgfmath@x<0pt\relax%
-            \pgfmath@x-\pgfmath@x%
-        \fi%
-        \ifdim\pgfmath@y<0pt\relax%
-            \pgfmath@y-\pgfmath@y%
-        \fi%
-        \ifdim\pgfmath@x=0pt\relax%
-            \pgfmath@x\pgfmath@y%
-        \else%
-            \ifdim\pgfmath@y=0pt\relax%
-            \else%
-                \ifdim\pgfmath@x>\pgfmath@y%
-                    \pgfmath@xa\pgfmath@x%
-                    \pgfmath@x\pgfmath@y%
-                    \pgfmath@y\pgfmath@xa%
-                \fi%
-                % We use a scaling factor to reduce errors.
-                \ifdim\pgfmath@y>10000pt\relax%
-                    \c@pgfmath@counta1500\relax%
-                \else%
-                    \ifdim\pgfmath@y>1000pt\relax%
-                        \c@pgfmath@counta150\relax%
-                    \else%
-                        \ifdim\pgfmath@y>100pt\relax%
-                            \c@pgfmath@counta50\relax%
-                        \else%
-                            \c@pgfmath@counta1\relax%
-                        \fi%
-                    \fi%
-                \fi%
-                \divide\pgfmath@x\c@pgfmath@counta\relax%
-                \divide\pgfmath@y\c@pgfmath@counta\relax%
-                \pgfmathreciprocal@{\pgfmath@tonumber{\pgfmath@y}}%
-                \pgfmath@x\pgfmathresult\pgfmath@x%
-                \pgfmath@xa\pgfmath@tonumber{\pgfmath@x}\pgfmath@x%
-                \edef\pgfmath@temp{\pgfmath@tonumber{\pgfmath@xa}}%
-                %
-                % Use A+x^2*(B+x^2*(C+x^2*(D+E*x^2)))
-                % where
-                % A = +1.000012594
-                % B = +0.4993615349
-                % C = -0.1195159052
-                % D = +0.04453994279
-                % E = -0.01019210944
-                %
-                \pgfmath@x-0.01019210944\pgfmath@xa%
-                \advance\pgfmath@x0.04453994279pt\relax%
-                \pgfmath@x\pgfmath@temp\pgfmath@x%
-                \advance\pgfmath@x-0.1195159052pt\relax%
-                \pgfmath@x\pgfmath@temp\pgfmath@x%
-                \advance\pgfmath@x0.4993615349pt\relax%
-                \pgfmath@x\pgfmath@temp\pgfmath@x%
-                \advance\pgfmath@x1.000012594pt\relax%
-                \ifdim\pgfmath@y<0pt\relax%
-                    \pgfmath@y-\pgfmath@y%
-                \fi%
-                \pgfmath@x\pgfmath@tonumber{\pgfmath@y}\pgfmath@x%
-                % Invert the scaling factor.
-                \multiply\pgfmath@x\c@pgfmath@counta\relax%
-            \fi%
-        \fi%
-        \pgfmath@returnone\pgfmath@x%
-    \endgroup%
+		\ifdim\pgfmath@x<0pt\relax%
+			\pgfmath@x-\pgfmath@x%
+		\fi%
+		\ifdim\pgfmath@y<0pt\relax%
+			\pgfmath@y-\pgfmath@y%
+		\fi%
+		\ifdim\pgfmath@x=0pt\relax%
+			\pgfmath@x\pgfmath@y%
+		\else%
+			\ifdim\pgfmath@y=0pt\relax%
+			\else%
+				\ifdim\pgfmath@x>\pgfmath@y%
+					\pgfmath@xa\pgfmath@x%
+					\pgfmath@x\pgfmath@y%
+					\pgfmath@y\pgfmath@xa%
+				\fi%
+				% We use a scaling factor to reduce errors.
+				\ifdim\pgfmath@y>10000pt\relax%
+					\c@pgfmath@counta1500\relax%
+				\else%
+					\ifdim\pgfmath@y>1000pt\relax%
+						\c@pgfmath@counta150\relax%
+					\else%
+						\ifdim\pgfmath@y>100pt\relax%
+							\c@pgfmath@counta50\relax%
+						\else%
+							\c@pgfmath@counta1\relax%
+						\fi%
+					\fi%
+				\fi%
+				\divide\pgfmath@x\c@pgfmath@counta\relax%
+				\divide\pgfmath@y\c@pgfmath@counta\relax%
+				\pgfmathreciprocal@{\pgfmath@tonumber{\pgfmath@y}}%
+				\pgfmath@x\pgfmathresult\pgfmath@x%
+				\pgfmath@xa\pgfmath@tonumber{\pgfmath@x}\pgfmath@x%
+				\edef\pgfmath@temp{\pgfmath@tonumber{\pgfmath@xa}}%
+				%
+				% Use A+x^2*(B+x^2*(C+x^2*(D+E*x^2))) 
+				% where
+				% A = +1.000012594
+				% B = +0.4993615349 
+				% C = -0.1195159052
+				% D = +0.04453994279
+				% E = -0.01019210944
+				%
+				\pgfmath@x-0.01019210944\pgfmath@xa%
+				\advance\pgfmath@x0.04453994279pt\relax%
+				\pgfmath@x\pgfmath@temp\pgfmath@x%
+				\advance\pgfmath@x-0.1195159052pt\relax%
+				\pgfmath@x\pgfmath@temp\pgfmath@x%
+				\advance\pgfmath@x0.4993615349pt\relax%
+				\pgfmath@x\pgfmath@temp\pgfmath@x%
+				\advance\pgfmath@x1.000012594pt\relax%
+				\ifdim\pgfmath@y<0pt\relax%
+					\pgfmath@y-\pgfmath@y%
+				\fi%
+				\pgfmath@x\pgfmath@tonumber{\pgfmath@y}\pgfmath@x%
+				% Invert the scaling factor.
+				\multiply\pgfmath@x\c@pgfmath@counta\relax%
+			\fi%
+		\fi%
+		\pgfmath@returnone\pgfmath@x%
+	\endgroup%
 }
 
 % Hyperbolic functions contributed by Martin Heller.
 %
 \pgfmathdeclarefunction{cosh}{1}{%
-    \begingroup
-        \edef\pgfmath@arg{#1}%
-        \pgfmathexp@{\pgfmath@arg}%
-        \pgfmath@x=\pgfmathresult pt\relax%
-        \pgfmathexp@{-\pgfmath@arg}%
-        \advance\pgfmath@x by\pgfmathresult pt\relax%
-        \divide\pgfmath@x by2\relax%
-        \pgfmath@returnone\pgfmath@x%
-    \endgroup}
+	\begingroup
+		\edef\pgfmath@arg{#1}%
+		\pgfmathexp@{\pgfmath@arg}%
+		\pgfmath@x=\pgfmathresult pt\relax%
+		\pgfmathexp@{-\pgfmath@arg}%
+		\advance\pgfmath@x by\pgfmathresult pt\relax%
+		\divide\pgfmath@x by2\relax%
+		\pgfmath@returnone\pgfmath@x%
+	\endgroup}
 
 \pgfmathdeclarefunction{sinh}{1}{%
-    \begingroup
-        \edef\pgfmath@arg{#1}%
-        \pgfmathexp@{\pgfmath@arg}%
-        \pgfmath@x=\pgfmathresult pt\relax%
-        \pgfmathexp@{-\pgfmath@arg}%
-        \advance\pgfmath@x by-\pgfmathresult pt\relax%
-        \divide\pgfmath@x by2\relax%
-        \pgfmath@returnone\pgfmath@x%
-    \endgroup
+	\begingroup
+		\edef\pgfmath@arg{#1}%
+		\pgfmathexp@{\pgfmath@arg}%
+		\pgfmath@x=\pgfmathresult pt\relax%
+		\pgfmathexp@{-\pgfmath@arg}%
+		\advance\pgfmath@x by-\pgfmathresult pt\relax%
+		\divide\pgfmath@x by2\relax%
+		\pgfmath@returnone\pgfmath@x%
+	\endgroup
 }%
 
 \pgfmathdeclarefunction{tanh}{1}{%
-    \begingroup
-        \edef\pgfmath@arg{#1}%
-        \pgfmathsinh@{\pgfmath@arg}%
-        \pgfmath@x=\pgfmathresult pt\relax%
-        \pgfmathcosh@{\pgfmath@arg}%
-        \pgfmath@y=\pgfmathresult pt\relax%
-        \pgfmathdivide@{\pgfmath@tonumber{\pgfmath@x}}{\pgfmath@tonumber{\pgfmath@y}}%
-        \pgfmath@x=\pgfmathresult pt\relax%
-        \pgfmath@returnone\pgfmath@x%
-    \endgroup
+	\begingroup
+		\edef\pgfmath@arg{#1}%
+		\pgfmathsinh@{\pgfmath@arg}%
+		\pgfmath@x=\pgfmathresult pt\relax%
+		\pgfmathcosh@{\pgfmath@arg}%
+		\pgfmath@y=\pgfmathresult pt\relax%	
+		\pgfmathdivide@{\pgfmath@tonumber{\pgfmath@x}}{\pgfmath@tonumber{\pgfmath@y}}%
+		\pgfmath@x=\pgfmathresult pt\relax%
+		\pgfmath@returnone\pgfmath@x%
+	\endgroup
 }%
 
 % \pgfmathscientific
@@ -134,136 +134,136 @@
 % NB These arguments *are not parsed*, as the long mantissa would be lost.
 %
 \def\pgfmathscientific#1#2{%
-    \begingroup%
-        \edef\pgfmath@sci@exponent{#2}%
-        \pgfmath@x#1pt\relax%
-        \ifdim\pgfmath@x<0pt\relax%
-            \pgfmath@x-\pgfmath@x%
-            \edef\pgfmath@sci@sign{-}%
-            \expandafter\edef\expandafter\pgfmath@temp\expandafter{\expandafter\pgfmath@gobbleone#1}%
-        \else%
-            \edef\pgfmath@sci@sign{+}%
-            \edef\pgfmath@temp{#1}%
-        \fi%
-        \expandafter\pgfmath@in@\expandafter.\expandafter{#1}%
-        \ifpgfmath@in@%
-        \else%
-            \edef\pgfmath@temp{\pgfmath@temp.0}%
-        \fi%
-        \expandafter\pgfmath@scientific@@\pgfmath@temp00000000000\pgfmath@}
+	\begingroup%
+		\edef\pgfmath@sci@exponent{#2}%
+		\pgfmath@x#1pt\relax%
+		\ifdim\pgfmath@x<0pt\relax%
+			\pgfmath@x-\pgfmath@x%
+			\edef\pgfmath@sci@sign{-}%	
+			\expandafter\edef\expandafter\pgfmath@temp\expandafter{\expandafter\pgfmath@gobbleone#1}%		
+		\else%
+			\edef\pgfmath@sci@sign{+}%
+			\edef\pgfmath@temp{#1}%
+		\fi%
+		\expandafter\pgfmath@in@\expandafter.\expandafter{#1}%
+		\ifpgfmath@in@%
+		\else%
+			\edef\pgfmath@temp{\pgfmath@temp.0}%
+		\fi%
+		\expandafter\pgfmath@scientific@@\pgfmath@temp00000000000\pgfmath@}
 
 \def\pgfmath@scientific@@#1.#2#3#4#5#6{%
-        \edef\pgfmath@sci@int{#1}%
-        \edef\pgfmath@sci@mantissaA{#2#3#4#5#6}%
-        \pgfmath@scientific@@@}
-
+		\edef\pgfmath@sci@int{#1}%
+		\edef\pgfmath@sci@mantissaA{#2#3#4#5#6}%
+		\pgfmath@scientific@@@}
+	
 \def\pgfmath@scientific@@@#1#2#3#4#5#6\pgfmath@{%
-        \edef\pgfmath@sci@mantissaB{#1#2#3#4#5}%
-        \c@pgfmath@counta\pgfmath@sci@exponent\relax%
+		\edef\pgfmath@sci@mantissaB{#1#2#3#4#5}%
+		\c@pgfmath@counta\pgfmath@sci@exponent\relax%
                 \ifnum\c@pgfmath@counta<-4\relax%
                   \pgfmath@x0pt\relax%
                 \else%
-        \c@pgfmath@countb\c@pgfmath@counta%
-        \ifnum\c@pgfmath@counta<0\relax%
-            \c@pgfmath@counta-\c@pgfmath@counta%
-        \fi%
-        \pgfmathpow@{10}{\the\c@pgfmath@counta}%
-        \afterassignment\pgfmath@gobbletilpgfmath@
-        \c@pgfmath@countc\pgfmathresult\relax\pgfmath@
-        \edef\pgfmath@sci@factor{\the\c@pgfmath@countc}%
-        \ifnum\c@pgfmath@countb<0\relax%
-            % xE-y: easy...
-            \pgfmath@x\pgfmath@sci@int.\pgfmath@sci@mantissaA pt\relax%
-            \divide\pgfmath@x\pgfmath@sci@factor\relax%
-        \else%
-            % xE+y:
-            % Must do this way so as not lose digits in a long mantissa. Sigh...
-            \c@pgfmath@counta\pgfmath@sci@int%
-            \c@pgfmath@countb\pgfmath@sci@mantissaA%
-            \multiply\c@pgfmath@counta\pgfmath@sci@factor\relax%
-            \multiply\c@pgfmath@countb\pgfmath@sci@factor\relax%
-            \c@pgfmath@countc\c@pgfmath@countb%
-            \divide\c@pgfmath@countb100000\relax%
-            \advance\c@pgfmath@counta\c@pgfmath@countb%
-            \multiply\c@pgfmath@countb100000\relax%
-            \advance\c@pgfmath@countc-\c@pgfmath@countb%
-            \c@pgfmath@countb\pgfmath@sci@mantissaB\relax%
-            \multiply\c@pgfmath@countb\pgfmath@sci@factor\relax%
-            \divide\c@pgfmath@countb100000\relax%
-            \advance\c@pgfmath@countc\c@pgfmath@countb%
-            \advance\c@pgfmath@countc100000\relax%
-            \edef\pgfmath@sci@result{\pgfmath@sci@sign\the\c@pgfmath@counta.\expandafter\pgfmath@gobbleone\the\c@pgfmath@countc pt}%
-            \pgfmath@x\pgfmath@sci@result\relax%
-        \fi\fi%
-        \pgfmath@returnone\pgfmath@x%
-    \endgroup}
-
+		\c@pgfmath@countb\c@pgfmath@counta%
+		\ifnum\c@pgfmath@counta<0\relax%
+			\c@pgfmath@counta-\c@pgfmath@counta%
+		\fi%
+		\pgfmathpow@{10}{\the\c@pgfmath@counta}%
+		\afterassignment\pgfmath@gobbletilpgfmath@
+		\c@pgfmath@countc\pgfmathresult\relax\pgfmath@
+		\edef\pgfmath@sci@factor{\the\c@pgfmath@countc}%
+		\ifnum\c@pgfmath@countb<0\relax%
+			% xE-y: easy...
+			\pgfmath@x\pgfmath@sci@int.\pgfmath@sci@mantissaA pt\relax%
+			\divide\pgfmath@x\pgfmath@sci@factor\relax%
+		\else%
+			% xE+y: 
+			% Must do this way so as not lose digits in a long mantissa. Sigh...
+			\c@pgfmath@counta\pgfmath@sci@int%
+			\c@pgfmath@countb\pgfmath@sci@mantissaA%
+			\multiply\c@pgfmath@counta\pgfmath@sci@factor\relax%
+			\multiply\c@pgfmath@countb\pgfmath@sci@factor\relax%
+			\c@pgfmath@countc\c@pgfmath@countb%
+			\divide\c@pgfmath@countb100000\relax%
+			\advance\c@pgfmath@counta\c@pgfmath@countb%
+			\multiply\c@pgfmath@countb100000\relax%
+			\advance\c@pgfmath@countc-\c@pgfmath@countb%
+			\c@pgfmath@countb\pgfmath@sci@mantissaB\relax%
+			\multiply\c@pgfmath@countb\pgfmath@sci@factor\relax%
+			\divide\c@pgfmath@countb100000\relax%
+			\advance\c@pgfmath@countc\c@pgfmath@countb%
+			\advance\c@pgfmath@countc100000\relax%
+			\edef\pgfmath@sci@result{\pgfmath@sci@sign\the\c@pgfmath@counta.\expandafter\pgfmath@gobbleone\the\c@pgfmath@countc pt}%
+			\pgfmath@x\pgfmath@sci@result\relax%
+		\fi\fi%
+		\pgfmath@returnone\pgfmath@x%
+	\endgroup}
+	
 
 
 % width function.
 %
 \pgfmathdeclarefunction{width}{1}{%
-    \begingroup%
-        \setbox\pgfmath@box=\hbox{{\pgfmath@selectfont{#1}}}%
-        \pgfmath@x=\wd\pgfmath@box%
-        \edef\pgfmathresult{\pgfmath@tonumber{\pgfmath@x}}%
-        \pgfmath@smuggleone\pgfmathresult%
-    \endgroup%
+	\begingroup%
+		\setbox\pgfmath@box=\hbox{{\pgfmath@selectfont{#1}}}%
+		\pgfmath@x=\wd\pgfmath@box%
+		\edef\pgfmathresult{\pgfmath@tonumber{\pgfmath@x}}%
+		\pgfmath@smuggleone\pgfmathresult%
+	\endgroup%
 }
 
 
 % height function.
 %
 \pgfmathdeclarefunction{height}{1}{%
-    \begingroup%
-        \setbox\pgfmath@box=\hbox{{\pgfmath@selectfont{#1}}}%
-        \pgfmath@x=\ht\pgfmath@box%
-        \edef\pgfmathresult{\pgfmath@tonumber{\pgfmath@x}}%
-        \pgfmath@smuggleone\pgfmathresult%
-    \endgroup%
+	\begingroup%
+		\setbox\pgfmath@box=\hbox{{\pgfmath@selectfont{#1}}}%
+		\pgfmath@x=\ht\pgfmath@box%
+		\edef\pgfmathresult{\pgfmath@tonumber{\pgfmath@x}}%
+		\pgfmath@smuggleone\pgfmathresult%
+	\endgroup%
 }
 
 % depth function.
 %
 \pgfmathdeclarefunction{depth}{1}{%
-    \begingroup%
-        \setbox\pgfmath@box=\hbox{{\pgfmath@selectfont{#1}}}%
-        \pgfmath@x=\dp\pgfmath@box%
-        \edef\pgfmathresult{\pgfmath@tonumber{\pgfmath@x}}%
-        \pgfmath@smuggleone\pgfmathresult%
-    \endgroup%
+	\begingroup%
+		\setbox\pgfmath@box=\hbox{{\pgfmath@selectfont{#1}}}%
+		\pgfmath@x=\dp\pgfmath@box%
+		\edef\pgfmathresult{\pgfmath@tonumber{\pgfmath@x}}%
+		\pgfmath@smuggleone\pgfmathresult%
+	\endgroup%
 }
 
 
 % array function.
 %
 \pgfmathdeclarefunction{array}{2}{%
-    \begingroup%
-        \afterassignment\pgfmath@gobbletilpgfmath@\pgfmath@count=#2\relax\pgfmath@%
-        \expandafter\pgfmatharray@@#1\pgfmath@stop%
+	\begingroup%
+		\afterassignment\pgfmath@gobbletilpgfmath@\pgfmath@count=#2\relax\pgfmath@%
+		\expandafter\pgfmatharray@@#1\pgfmath@stop%
 }
 
 \def\pgfmath@token@stop{\pgfmath@stop}%
 \def\pgfmatharray@@#1{%
-    \def\pgfmath@temp{#1}%
-    \advance\pgfmath@count by-1\relax%
-    \ifx\pgfmath@temp\pgfmath@token@stop%
-        \pgfmath@error{Array index out of bounds.}{}%
-        \def\pgfmathresult{0}%
-        \pgfmath@smuggleone\pgfmathresult\endgroup%
-        \let\pgfmath@next=\relax%
-    \else%
-        \ifnum\pgfmath@count=-1\relax%
-            \def\pgfmathresult{#1}%
-            \let\pgfmath@next=\pgfmatharray@@@%
-        \else%
-            \let\pgfmath@next=\pgfmatharray@@%
-        \fi%
-    \fi%
-    \pgfmath@next}
+	\def\pgfmath@temp{#1}%
+	\advance\pgfmath@count by-1\relax%
+	\ifx\pgfmath@temp\pgfmath@token@stop%
+		\pgfmath@error{Array index out of bounds.}{}%
+		\def\pgfmathresult{0}%
+		\pgfmath@smuggleone\pgfmathresult\endgroup%
+		\let\pgfmath@next=\relax%
+	\else%
+		\ifnum\pgfmath@count=-1\relax%
+			\def\pgfmathresult{#1}%
+			\let\pgfmath@next=\pgfmatharray@@@%
+		\else%
+			\let\pgfmath@next=\pgfmatharray@@%
+		\fi%
+	\fi%
+	\pgfmath@next}
 
 \def\pgfmatharray@@@#1\pgfmath@stop{%
-    \pgfmath@smuggleone\pgfmathresult\endgroup%
+	\pgfmath@smuggleone\pgfmathresult\endgroup%
 }
 
 % dim function: return dimension of an array
@@ -288,55 +288,55 @@
 % max function.
 %
 \pgfmathdeclarefunction{max}{...}{%
-    \begingroup%
-        \pgfmath@x=-16383pt\relax%
-        \pgfmathmax@@#1{}}
+	\begingroup%
+		\pgfmath@x=-16383pt\relax%
+		\pgfmathmax@@#1{}}
 
 \def\pgfmathmax@@#1{%
-    \def\pgfmath@temp{#1}%
-    \ifx\pgfmath@temp\pgfmath@empty%
-        \let\pgfmath@next=\pgfmathmax@@@%
-    \else%
-        \ifdim#1pt>\pgfmath@x%
-            \pgfmath@x=#1pt\relax%
-        \fi%
-        \let\pgfmath@next=\pgfmathmax@@%
-    \fi%
-    \pgfmath@next}
+	\def\pgfmath@temp{#1}%
+	\ifx\pgfmath@temp\pgfmath@empty%
+		\let\pgfmath@next=\pgfmathmax@@@%
+	\else%
+		\ifdim#1pt>\pgfmath@x%
+			\pgfmath@x=#1pt\relax%
+		\fi%
+		\let\pgfmath@next=\pgfmathmax@@%
+	\fi%
+	\pgfmath@next}
 
 \def\pgfmathmax@@@{\pgfmath@returnone\pgfmath@x\endgroup}%
 
-% For computability with old code.
+% For compatability with old code.
 \def\pgfmathmax#1#2{%
-    \pgfmathparse{#1,#2}%
-    \expandafter\pgfmathmax@\expandafter{\pgfmathresult}%
+	\pgfmathparse{#1,#2}%
+	\expandafter\pgfmathmax@\expandafter{\pgfmathresult}%
 }
 
 % min function.
 %
 \pgfmathdeclarefunction{min}{...}{%
-    \begingroup%
-        \pgfmath@x=16383pt\relax%
-        \pgfmathmin@@#1{}}
+	\begingroup%
+		\pgfmath@x=16383pt\relax%
+		\pgfmathmin@@#1{}}
 
 \def\pgfmathmin@@#1{%
-    \def\pgfmath@temp{#1}%
-    \ifx\pgfmath@temp\pgfmath@empty%
-        \let\pgfmath@next=\pgfmathmin@@@%
-    \else%
-        \ifdim#1pt<\pgfmath@x%
-            \pgfmath@x=#1pt\relax%
-        \fi%
-        \let\pgfmath@next=\pgfmathmin@@%
-    \fi%
-    \pgfmath@next}
+	\def\pgfmath@temp{#1}%
+	\ifx\pgfmath@temp\pgfmath@empty%
+		\let\pgfmath@next=\pgfmathmin@@@%
+	\else%
+		\ifdim#1pt<\pgfmath@x%
+			\pgfmath@x=#1pt\relax%
+		\fi%
+		\let\pgfmath@next=\pgfmathmin@@%
+	\fi%
+	\pgfmath@next}
 
 \def\pgfmathmin@@@{\pgfmath@returnone\pgfmath@x\endgroup}%
 
-% For computability with old code.
+% For compatability with old code.
 \def\pgfmathmin#1#2{%
-    \pgfmathparse{#1,#2}%
-    \expandafter\pgfmathmin@\expandafter{\pgfmathresult}%
+	\pgfmathparse{#1,#2}%
+	\expandafter\pgfmathmin@\expandafter{\pgfmathresult}%
 }
 
 
@@ -346,4 +346,4 @@
 \pgfmathdeclarefunction{scalar}{1}{%
   \def\pgfmathresult{#1}%
   \global\pgfmathunitsdeclaredfalse%
-}
+}
\ No newline at end of file