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b3d: add support for positive nan

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Lars Mueller 2021-03-03 18:31:38 +01:00
parent ca6757f326
commit 8c97425fbc
1 changed files with 3 additions and 2 deletions
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b3d.lua
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@ -63,8 +63,9 @@ function read(stream)
if mantissa == 0 then if mantissa == 0 then
return sign * math.huge return sign * math.huge
end end
-- TODO differentiate quiet and signalling NaN as well as positive and negative -- Differentiating quiet and signalling nan is not possible in Lua, hence we don't have to do it
return 0/0 -- HACK ((0/0)^1) yields nan, 0/0 yields -nan
return sign == 1 and ((0/0)^1) or 0/0
end end
if exponent == 0 then if exponent == 0 then
-- subnormal value -- subnormal value