util.math.huge

Constant

util.math.huge -- inf

Represents positive infinity. Useful as a sentinel initial value for minimum-finding loops, or for comparisons involving unbounded ranges.

Examples

Print the value of huge

core.engine.print("info", util.math.huge) -- inf

huge is greater than any number

core.engine.print("info", util.math.huge > 1e308) -- true

Negative huge is less than any number

core.engine.print("info", -util.math.huge < -1e308) -- true

Use as initial value in a minimum search

local values = {42, 7, 99, 3, 56}
local smallest = util.math.huge

for _, v in ipairs(values) do
    if v < smallest then
        smallest = v
    end
end

core.engine.print("info", smallest) -- 3

Use as initial value in a maximum search

local values = {42, 7, 99, 3, 56}
local largest = -util.math.huge

for _, v in ipairs(values) do
    if v > largest then
        largest = v
    end
end

core.engine.print("info", largest) -- 99

Check if a number is finite

local function is_finite(value)
    return value > -util.math.huge and value < util.math.huge
end

core.engine.print("info", is_finite(42))        -- true
core.engine.print("info", is_finite(util.math.huge)) -- false

Division by zero produces huge

local result = 1/0

core.engine.print("info", result == util.math.huge) -- true

Constant

Examples

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