Created
March 23, 2015 19:35
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| -- General helpers | |
| function mod.guard(val) -- Bounds val [0,1] and NaN->0 | |
| mod:argcheck(val,1,'number') | |
| if val < 0 or val ~= val then val = 0 | |
| elseif val > 1 then val = 1 end | |
| return val | |
| end |
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