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Fix copysign

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This commit is contained in:
Rerumu 2022-06-25 22:51:45 -04:00
parent 27c05550e4
commit efc5c9354f
1 changed files with 9 additions and 2 deletions
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11
codegen/luau/runtime/runtime.lua
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@ -43,6 +43,7 @@ do
local nearest = {} local nearest = {}
local assert = assert local assert = assert
local math_abs = math.abs local math_abs = math.abs
local math_floor = math.floor local math_floor = math.floor
local math_round = math.round local math_round = math.round
@ -50,6 +51,9 @@ do
local math_max = math.max local math_max = math.max
local math_min = math.min local math_min = math.min
local string_byte = string.byte
local string_pack = string.pack
function add.i32(a, b) function add.i32(a, b)
return to_u32(a + b) return to_u32(a + b)
end end
@ -108,8 +112,11 @@ do
end end
function copysign.f32(lhs, rhs) function copysign.f32(lhs, rhs)
if rhs >= 0 then local packed = string_pack("d", rhs)
return (math_abs(lhs)) local sign = string_byte(packed, 8)
if sign < 0x80 then
return math_abs(lhs)
else else
return -math_abs(lhs) return -math_abs(lhs)
end end