Stable code

1 files changed, 0 insertions, 16 deletions

diff --git a/advtrains/helpers.lua b/advtrains/helpers.lua
index 9afe72d..c398025 100644
--- a/advtrains/helpers.lua
+++ b/advtrains/helpers.lua
@@ -398,22 +398,6 @@ function advtrains.decode_pos(pts)
 	return vector.new(dec(strx), dec(stry), dec(strz))

 end

 

--- Solve quadratic equations (i.e. a*x^2 + b*x + c = 0)

-function advtrains.solve_quadratic_equation(a, b, c)

-	if not (a and b and c) then return nil end

-	if a == 0 then return {-c/b, -c/b} end -- avoid division by zero

-	local delta = (b*b - 4*a*c)

-	if delta < 0 then return {-b/2/a,-b/2/a} end -- ignore imaginary part

-	return {((-b+math.sqrt(delta))/2/a),((-b-math.sqrt(delta))/2/a)}

-end

-

--- safe square root

--- Negative return values indicate imaginary numbers.

-function advtrains.safesqrt(a)

-	if a >= 0 then return math.sqrt(a) end

-	return 0 - math.sqrt(-a)

-end

-

 --[[ Benchmarking code

 local tdt = {}

 local tlt = {}