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Use math constants

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This commit is contained in:
Lars Mueller 2021-08-09 13:58:10 +02:00
parent 9af2d64ad9
commit eb3a3b2960
1 changed files with 3 additions and 2 deletions
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binary.lua
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@ -2,6 +2,8 @@
local assert, math_huge, math_frexp, math_floor local assert, math_huge, math_frexp, math_floor
= assert, math.huge, math.frexp, math.floor = assert, math.huge, math.frexp, math.floor
local positive_nan, negative_nan = modlib.math.positive_nan, modlib.math.negative_nan
-- Set environment -- Set environment
local _ENV = {} local _ENV = {}
setfenv(1, _ENV) setfenv(1, _ENV)
@ -34,8 +36,7 @@ function read_float(read_byte, double)
return sign * math_huge return sign * math_huge
end end
-- Differentiating quiet and signalling nan is not possible in Lua, hence we don't have to do it -- Differentiating quiet and signalling nan is not possible in Lua, hence we don't have to do it
-- HACK ((0/0)^1) yields nan, 0/0 yields -nan return sign == 1 and positive_nan or negative_nan
return sign == 1 and ((0/0)^1) or 0/0
end end
assert(mantissa < 1) assert(mantissa < 1)
if exponent == 0 then if exponent == 0 then