From f1c3cb9dc199c28cdd2c813eb1ea5c21345125d0 Mon Sep 17 00:00:00 2001
From: Khaled Hosny <khaledhosny@eglug.org>
Date: Mon, 11 Jan 2010 15:15:52 +0200
Subject: Import ConTeX's lua libraries

Replace most of luaextra.lua with a bunch of require() calls and add
renamed (but unmodified) ConTeX lua libraries to the repository.

ConTeXt's l-xml.lua module has been excluded because it depends on a
bunch of other ConTeXt specific modules. Also l-pdfview.lua has been
dropped, I don't know what to use it for.
---
 luaextra-math.lua | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 luaextra-math.lua

(limited to 'luaextra-math.lua')

diff --git a/luaextra-math.lua b/luaextra-math.lua
new file mode 100644
index 0000000..fc8db47
--- /dev/null
+++ b/luaextra-math.lua
@@ -0,0 +1,41 @@
+if not modules then modules = { } end modules ['l-math'] = {
+    version   = 1.001,
+    comment   = "companion to luat-lib.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local floor, sin, cos, tan = math.floor, math.sin, math.cos, math.tan
+
+if not math.round then
+    function math.round(x)
+        return floor(x + 0.5)
+    end
+end
+
+if not math.div then
+    function math.div(n,m)
+        return floor(n/m)
+    end
+end
+
+if not math.mod then
+    function math.mod(n,m)
+        return n % m
+    end
+end
+
+local pipi = 2*math.pi/360
+
+function math.sind(d)
+    return sin(d*pipi)
+end
+
+function math.cosd(d)
+    return cos(d*pipi)
+end
+
+function math.tand(d)
+    return tan(d*pipi)
+end
-- 
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