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Move math.hypot() to misc_helpers.lua and fix zero-division error

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ShadowNinja 2013-07-07 12:02:11 -04:00 • committed by kwolekr
parent 9dcd21911a
commit a75afb85ca
2 changed files with 10 additions and 10 deletions
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10
builtin/misc_helpers.lua
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@ -91,4 +91,14 @@ function minetest.pos_to_string(pos)
return "(" .. pos.x .. "," .. pos.y .. "," .. pos.z .. ")"
end
function math.hypot(x, y)
local t
x = math.abs(x)
y = math.abs(y)
t = math.min(x, y)
x = math.max(x, y)
if x == 0 then return 0 end
t = t / x
return x * math.sqrt(1 + t * t)
end