summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/context/base/supp-ran.lua
diff options
context:
space:
mode:
Diffstat (limited to 'Master/texmf-dist/tex/context/base/supp-ran.lua')
-rw-r--r--Master/texmf-dist/tex/context/base/supp-ran.lua46
1 files changed, 46 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/supp-ran.lua b/Master/texmf-dist/tex/context/base/supp-ran.lua
new file mode 100644
index 00000000000..9e4330f57ca
--- /dev/null
+++ b/Master/texmf-dist/tex/context/base/supp-ran.lua
@@ -0,0 +1,46 @@
+if not modules then modules = { } end modules ['supp-ran'] = {
+ version = 1.001,
+ comment = "companion to supp-ran.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+-- We cannot ask for the current seed, so we need some messy hack
+-- here.
+
+commands = commands or { }
+
+local texwrite, random, seed, last = tex.write, math.random, false, 1
+
+function commands.getrandomcounta(min,max)
+ last = random(min,max)
+ texwrite(last)
+end
+
+function commands.getrandomcountb(min,max)
+ last = random(min,max)/65536
+ texwrite(last)
+end
+
+function commands.setrandomseed(n)
+ last = n
+ math.randomseed(n)
+end
+
+function commands.getrandomseed(n)
+ texwrite(last)
+end
+
+function commands.freezerandomseed()
+ if seed == false then
+ seed = last
+ end
+end
+
+function commands.defrostrandomseed()
+ if seed ~= false then
+ math.randomseed(last)
+ seed = false
+ end
+end