2016-01-12 16:26:00

1 files changed, 38 insertions, 0 deletions

diff --git a/tex/context/base/mkiv/l-math.lua b/tex/context/base/mkiv/l-math.lua
new file mode 100644
index 000000000..ec62919b4
--- /dev/null
+++ b/tex/context/base/mkiv/l-math.lua
@@ -0,0 +1,38 @@
+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.ceiling then
+    math.ceiling = math.ceil
+end
+
+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
+
+if not math.sind then
+    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
+end
+
+if not math.odd then
+    function math.odd (n) return n % 2 ~= 0 end
+    function math.even(n) return n % 2 == 0 end
+end