luarandom (15dec18)

git-svn-id: svn://tug.org/texlive/trunk@49419 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 76 insertions, 0 deletions

diff --git a/Master/texmf-dist/tex/lualatex/luarandom/luarandom.sty b/Master/texmf-dist/tex/lualatex/luarandom/luarandom.sty
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+++ b/Master/texmf-dist/tex/lualatex/luarandom/luarandom.sty
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+% $Id: luarandom.sty 862 2018-12-15 16:25:55Z herbert $
+%%
+%% This is file `luarandom.sty'.
+%%
+%% IMPORTANT NOTICE:
+%%
+%% luarandom Copyright (C) 2019-     Herbert Voss <hvoss@tug.org>
+%%
+%% This package may be distributed under the terms of the LaTeX Project
+%% Public License, as described in lppl.txt in the base LaTeX distribution.
+%% Either version 1.3 or, at your option, any later version.
+%%
+
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{luarandom}[2018/12/16 v 0.01 package for random numbers]
+\RequirePackage{ifluatex}
+\def\lua@nl{^^J\space\space\space\space}
+\newcommand\lua@PackageError[2]{\PackageError{luarandom}{\lua@nl #1^^J}{#2}}
+\ifluatex\else
+      \lua@PackageError{%
+        "You are not using LuaTeX\app@nl
+        the lua definitions will not be available!}
+       {If you run the source from a GUI then set
+        the compiler "lualatex" in the 
+        preferences.}%
+\fi
+
+\RequirePackage{luacode}
+\begin{luacode*}
+RandomNumbers = {}
+
+function allFound(R)
+  local r1 = R[1]
+  local i
+  for i=2,#R do 
+    r1 = r1 and R[i]
+    if not r1 then return false end 
+  end
+  return true
+end
+
+function makeRandomNumberList(l,r,n)
+  RandomNumbers = {}
+  math.randomseed(os.time())
+  local R = {}
+  local i,j
+  for i=1,n do R[i] = false end
+  repeat
+    local rand = math.random(l,r)
+    if not R[rand] then
+      R[rand] = true
+      RandomNumbers[#RandomNumbers+1] = rand
+    end
+  until allFound(R)
+end
+
+function makeSimpleRandomNumberList(l,r,n)
+  RandomNumbers = {}
+  math.randomseed(os.time()/3)
+  local i
+  for i=1,n do RandomNumbers[#RandomNumbers+1] = math.random(l,r) end
+end
+
+function getRand(i)
+ tex.print(RandomNumbers[i])
+end
+\end{luacode*}
+
+\def\makeRandomNumberList#1#2#3{%
+  \directlua{makeRandomNumberList(#1,#2,#3)}}
+\def\makeSimpleRandomNumberList#1#2#3{%
+  \directlua{makeSimpleRandomNumberList(#1,#2,#3)}}
+\def\getNumberFromList#1{\directlua{getRand(#1)}}
+
+
+\endinput