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-rw-r--r--src/fontloader/misc/fontloader-l-math.lua34
1 files changed, 34 insertions, 0 deletions
diff --git a/src/fontloader/misc/fontloader-l-math.lua b/src/fontloader/misc/fontloader-l-math.lua
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+++ b/src/fontloader/misc/fontloader-l-math.lua
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+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
+
+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