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36 lines
720 B
36 lines
720 B
-- @docclass math
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local U8 = 2^8
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local U16 = 2^16
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local U32 = 2^32
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local U64 = 2^64
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function math.round(num, idp)
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local mult = 10^(idp or 0)
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if num >= 0 then
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return math.floor(num * mult + 0.5) / mult
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else
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return math.ceil(num * mult - 0.5) / mult
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end
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end
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function math.isu8(num)
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return math.isinteger(num) and num >= 0 and num < U8
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end
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function math.isu16(num)
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return math.isinteger(num) and num >= U8 and num < U16
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end
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function math.isu32(num)
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return math.isinteger(num) and num >= U16 and num < U32
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end
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function math.isu64(num)
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return math.isinteger(num) and num >= U32 and num < U64
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end
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function math.isinteger(num)
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return ((type(num) == 'number') and (num == math.floor(num)))
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end
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