supp-ran.mkiv /size: 2325 b    last modification: 2021-10-28 13:50
1%D \module
2%D   [       file=supp-ran,
3%D        version=2008-10-31,
4%D          title=\CONTEXT\ Support Macros,
5%D       subtitle=Random Number Generation,
6%D         author=Hans Hagen,
7%D           date=\currentdate,
8%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
9%C
10%C This module is part of the \CONTEXT\ macro||package and is
11%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
12%C details.
13
14\writestatus{loading}{ConTeXt Support Macros / Random Number Generation}
15
16%D This module is downward compatible in the sense that we've kept the user
17%D interface (which uses intermediate variables).
18%D
19%D \starttyping
20%D                   \type{new}: \dorecurse{10}{\randomnumber{1}{100} }\par
21%D \setrandomseed{24}\type{set}: \dorecurse{10}{\randomnumber{1}{100} }\par
22%D \setrandomseed{24}\type{set}: \dorecurse{10}{\randomnumber{1}{100} }\par
23%D \setrandomseed{24}\type{set}: \dorecurse{10}{\randomnumber{1}{100} }\par
24%D \pushrandomseed   \type{new}: \dorecurse{10}{\randomnumber{1}{100} }\par
25%D \poprandomseed    \type{old}: \dorecurse{10}{\randomnumber{1}{100} }\par
26%D                   \type{new}: \dorecurse{10}{\randomnumber{1}{100} }\par
27%D \stoptyping
28
29\registerctxluafile{supp-ran}{}
30
31\unprotect
32
33\protected\def\getrandomcount #1#2#3{#1=\clf_getrandomnumber\numexpr#2\relax\numexpr#3\relax\relax}
34\protected\def\getrandomdimen #1#2#3{#1=\clf_getrandomdimen\dimexpr#2\relax\dimexpr#3\relax\scaledpoint\relax}
35\protected\def\getrandomnumber#1#2#3{\edef#1{\clf_getrandomnumber\numexpr#2\relax\numexpr#3\relax}}
36\protected\def\getrandomfloat #1#2#3{\edef#1{\clf_getrandomfloat\dimexpr#2\relax\dimexpr#3\relax}}
37\protected\def\setrandomseed      #1{\clf_setrandomseed\numexpr#1\relax}
38\protected\def\getrandomseed      #1{\edef#1{\clf_getrandomseed}}
39\protected\def\newrandomseed        {\clf_getrandomseed}
40%protected\def\pushrandomseed       {\clf_pushrandomseed}
41%protected\def\poprandomseed        {\clf_poprandomseed}
42%protected\def\reuserandomseed      {\clf_reuserandomseed} % within push/pop
43
44\let\freezerandomseed \pushrandomseed
45\let\defrostrandomseed\poprandomseed
46
47\setnewconstant \mpscaledmax 4095 % for old times sake
48
49\def\randomnumber  #1#2{\clf_getrandomnumber\numexpr#1\relax\numexpr#2\relax}
50\def\mprandomnumber    {\clf_getrandomnumber\zerocount\mpscaledmax}
51
52\protect \endinput
53