diff options
Diffstat (limited to 'tex/context/base/thrd-ran.tex')
| -rw-r--r-- | tex/context/base/thrd-ran.tex | 56 |
1 files changed, 28 insertions, 28 deletions
diff --git a/tex/context/base/thrd-ran.tex b/tex/context/base/thrd-ran.tex index 057e51127..63b3e1371 100644 --- a/tex/context/base/thrd-ran.tex +++ b/tex/context/base/thrd-ran.tex @@ -1,12 +1,12 @@ % Since we cannot be sure that this file is available at any -% system, we have copied the original in this file. These -% macros are encapsulates and extended in supp-ran.tex. +% system, we have copied the original in this file. These +% macros are encapsulates and extended in supp-ran.tex. % -% This module is slightly recoded to bring it more in tune +% This module is slightly recoded to bring it more in tune % with \CONTEXT's scratch registers and protection mechanisms. % RANDOM.TEX v.1 (Donald Arseneau) -% Generating "random" numbers in TeX. +% Generating "random" numbers in TeX. % % Random integers are generated in the range 1 to 2147483646 by the % macro \nextrandom. The result is returned in the counter \randomi. @@ -43,12 +43,12 @@ % code deals with initialization and type-conversion. On the other hand, % the large range may be wasted due to the sparse seed initialization. -% original code -% +% original code +% % \newcount\randomi % the random number seed (while executing) % \global\randomi\catcode`\@ % scratch variable during definitions % \catcode`\@=11 -% +% % \def\nextrandom{\begingroup % \ifnum\randomi<\@ne % then initialize with time % \global\randomi\time @@ -69,11 +69,11 @@ % \ifnum\randomi<\z@ \global\advance\randomi 2147483647\relax\fi % \endgroup % } -% +% % \countdef\count@ii=2 % use only in boxes! % \ifx\@tempcnta\undefined \csname newcount\endcsname \@tempcnta \fi % \ifx\@tempcntb\undefined \csname newcount\endcsname \@tempcntb \fi -% +% % \def\setrannum#1#2#3{% count register, minimum, maximum % \@tempcnta#3\advance\@tempcnta-#2\advance\@tempcnta\@ne % \@tempcntb 2147483645 % = m - 2 = 2^{31} - 3 @@ -82,40 +82,40 @@ % \advance\ranval#2\relax % #1\ranval % } -% +% % \def\setrandim#1#2#3{% dimen register, minimum length, maximum length % \dimen@#2\dimen@ii#3\relax % \setrannum\ranval\dimen@\dimen@ii % #1\ranval sp\relax % } -% +% % \def\getr@nval{% The values in \@tempcnta and \@tempcntb are parameters % \nextrandom % \ranval\randomi \advance\ranval\m@ne \divide\ranval\@tempcntb % \ifnum\ranval<\@tempcnta\else \expandafter\getr@nval \fi % } -% -% %D The next macro is not needed in \CONTEXT, which provides -% %D the \type {\withoutpt} macro. +% +% %D The next macro is not needed in \CONTEXT, which provides +% %D the \type {\withoutpt} macro. % %D -% %D \starttypen +% %D \starttypen % %D \def\pointless{\expandafter\PoinTless\the} % %D {\catcode`p=12 \catcode`t=12 \gdef\PoinTless#1pt{#1}} -% %D \stoptypen -% +% %D \stoptypen +% % \catcode`\@=\randomi % \global\randomi=0 % \newcount\ranval -% the recoded version, using \CONTEXT\ methods and variables; -% the magic is kept untouched +% the recoded version, using \CONTEXT\ methods and variables; +% the magic is kept untouched -\unprotect +\unprotect \newcount\randomi % the random number seed (while executing) \newcount\ranval -\ifx\m!systems\undefined \def\m!systems{system} \fi +\ifx\m!systems\undefined \def\m!systems{system} \fi \def\nextrandom {\begingroup @@ -135,8 +135,8 @@ \global\multiply\randomi 16807 \multiply\!!countc 2836 \global\advance\randomi-\!!countc\relax - \ifnum\randomi<\zerocount - \global\advance\randomi 2147483647 + \ifnum\randomi<\zerocount + \global\advance\randomi 2147483647 \fi \endgroup} @@ -154,15 +154,15 @@ {\!!dimenc#2% \!!dimend#3% \setrannum\ranval\!!dimenc\!!dimend - #1\ranval\s!sp\relax} + #1\ranval\s!sp\relax} % \s!sp not needed \def\getr@nval % The values in \!!counta and \!!countb are parameters {\nextrandom - \ranval\randomi + \ranval\randomi \advance\ranval\minusone \divide\ranval\!!countb - \ifnum\ranval<\!!counta \else - \expandafter\getr@nval + \ifnum\ranval<\!!counta \else + \expandafter\getr@nval \fi} -\protect \endinput +\protect \endinput
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