模块:Complex Number/Octonion

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本模块为基于Module:Complex Number的八元数运算系统，可提供其他模块呼叫使用，而若要直接在模板或条目中使用可通过Module:Complex Number/Calculate‎或{{复变运算}}来完成。

使用方法

LUA

1. 初始化数学库
   • local 自定义函数库名称 = require("Module:Complex Number/Octonion").omath.init()

     例如：local omath = require("Module:Complex Number/Octonion").omath.init()

2. 初始化指定数学结构的数字
   • local 变数名称 = 自定义函数库名称.constructor("描述数字的字符串")

     例如：local num1 = omath.constructor("2+3i+l")

3. 执行运算

   例如：

   local num1 = omath.constructor("2+3i+l")
   local num2 = omath.constructor("4+5j+kl")
   print(num1 * num2)
   

   输出：8+12i+10j+16k+4*l-2*jl+2*kl

   或者使用函数库内容：

   local num1 = omath.constructor("1+i+j+k+l+il+jl+kl")
   print(omath.sqrt(num1))
   

   输出：1.3835510696657 + 0.36138890060691i+ 0.36138890060691j + 0.36138890060691k + 0.36138890060691*l + 0.36138890060691*il + 0.36138890060691*jl + 0.36138890060691*kl

模板

使用{{复变运算}}

语法：{{複變運算|運算式|number class=Module:Complex Number/Octonion.函數庫名稱}}

例如：{{複變運算|(2+3i+l)*(4+5j+kl)|number class=Module:Complex Number/Octonion.omath}}

→“8+12i+10j+16k+4*l-2*jl+2*kl”

例如：{{複變運算|sqrt(1+i+l)|number class=Module:Complex Number/Octonion.omath}}

→“1.1687708944804+0.42779983858368i+0.42779983858368*l”

使用{{计算结果}}

例如：{{計算結果|(2+3i+l)*(4+5j+kl)|number class=Module:Complex Number/Octonion.omath}}

→“${{\left({{{2}+{3i}}+{l}}\right)}\times {\left({{{4}+{5j}}+{kl}}\right)}}=8+12i+10j+16k+4*l-2*jl+2*kl$”

例如：{{計算結果|sqrt(1+i+l)|number class=Module:Complex Number/Octonion.omath}}

→“${\sqrt {{{1}+{i}}+{l}}}=1.1687708944804+0.42779983858368i+0.42779983858368*l$”

或生成八元数乘法表：

{{乘法表
  |table class = class="wikitable" style="text-align: center; margin:0.5em auto;"
  |calculate = {{{left}}} * {{{right}}}
  |calculate title = <math>\times</math>
  |first number list = 1,i,j,k,l,il,jl,kl
  |second number list = 1,i,j,k,l,il,jl,kl
  |class=Module:Complex_Number/Octonion.omath
  |number css = css
  |use math=yes
}}

$\times$	$1$	$i$	$j$	$k$	$l$	$il$	$jl$	$kl$
$1$	$1$	$i$	$j$	$k$	$l$	$il$	$jl$	$kl$
$i$	$i$	$-1$	$k$	$-j$	$il$	$-l$	$-kl$	$jl$
$j$	$j$	$-k$	$-1$	$i$	$jl$	$kl$	$-l$	$-il$
$k$	$k$	$j$	$-i$	$-1$	$kl$	$-jl$	$il$	$-l$
$l$	$l$	$-il$	$-jl$	$-kl$	$-1$	$i$	$j$	$k$
$il$	$il$	$l$	$-kl$	$jl$	$-i$	$-1$	$-k$	$j$
$jl$	$jl$	$kl$	$l$	$-il$	$-j$	$k$	$-1$	$-i$
$kl$	$kl$	$-jl$	$il$	$l$	$-k$	$-j$	$i$	$-1$

参见

• Module:Complex Number

上述文档嵌入自Module:Complex Number/Octonion/doc。 (编辑 | 历史)
编者可以在本模块的沙盒 (创建 | 镜像)和测试样例 (创建)页面进行实验。
本模块的子页面。

--'
local p = {}
local comp_lib = require("Module:Complex_Number")
local qmath = comp_lib.qmath.init()
local toQnumber = qmath.constructor
p.qmath = qmath
p.toQnumber = toQnumber
function p._isNaN(x)
	return (not (x==x)) and  (x~=x)
end
p.omath={
	abs=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		if nonL.imag == 0 and nonL.jpart == 0 and nonL.kpart == 0 and valL.real == 0 and
			valL.imag == 0 and valL.jpart == 0 and valL.kpart == 0 then return math.abs(nonL.real) end
		if valL.real == 0 and valL.imag == 0 and valL.jpart == 0 and valL.kpart == 0 then return qmath.abs(nonL) end
		local nonL_len, valL_len = qmath.abs(nonL), qmath.abs(valL)
		return math.sqrt( nonL_len * nonL_len + valL_len * valL_len )
	end,
	conjugate=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return p.omath.getOctonionNumberQ(qmath.conjugate(nonL), -valL) 
	end,
	floor=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return p.omath.getOctonionNumberQ(qmath.floor(nonL), qmath.floor(valL))
	end,
	ceil=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return p.omath.getOctonionNumberQ(qmath.ceil(nonL), qmath.ceil(valL))
	end,
	div=function(op1, op2)
		local op_div = p.omath.inverse(op2)
		local _a, _b = p.omath.readOctonionNumberQpart(op1)
		local _c, _d = p.omath.readOctonionNumberQpart(op_div)
		local r_nonL = _a*_c - qmath.conjugate(_d)*_b
		local r_valL = _d*_a + _b*qmath.conjugate(_c)
		return p.omath.getOctonionNumberQ(r_nonL, r_valL) 
	end,
	round=function(op1, op2, op3)
		local nonL, valL = p.omath.readOctonionNumberQpart(op1)
		local digs = p.omath.readOctonionNumberQpart(op2)
		local base = p.omath.readOctonionNumberQpart(op2)
		return p.omath.getOctonionNumberQ(qmath.round(nonL, digs, base), qmath.round(valL, digs, base))
	end,
	re=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return tonumber(z) or nonL.real 
	end,
	im=function(z) 
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return (tonumber(z) and 0) or nonL.imag 
	end,
	inverse=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local nonL_up, valL_up = qmath.conjugate(nonL), -valL
		local nonL_len, valL_len = qmath.abs(nonL), qmath.abs(valL)
		local div_down = ( nonL_len * nonL_len + valL_len * valL_len )
		return p.omath.getOctonionNumberQ(nonL_up / div_down, valL_up / div_down)
	end,
	tovector=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return {nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart}
	end,
	trunc=function(op1, op2)
		local nonL, valL = p.omath.readOctonionNumberQpart(op1)
		local digs = p.omath.readOctonionNumberQpart(op2)
		return p.omath.getOctonionNumberQ(qmath.trunc(nonL, digs), qmath.trunc(valL, digs))
	end,
	sqrt=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local q_zero = qmath.getQuaternionNumber(0, 0, 0, 0)
		local check_sign = qmath.readComplexNumber(valL)
		check_sign:clean()
		if valL == q_zero then 
			return p.omath.getOctonionNumberQ(qmath.sqrt(nonL), qmath.getQuaternionNumber(0, 0, 0, 0))
		end
		return p.omath.pow(z, 0.5)
	end,
	root=function(_z,_n,_num)
		local z = p.omath.readComplexNumber(_z)
		local n = p.omath.readComplexNumber(_n or 2)
		local num = p.omath.readComplexNumber(_num or 1)
		if num == p.omath.one or num == p.omath.zero or num == nil then
			return p.omath.pow(z, p.omath.inverse(n))
		end
		local sgn_data = p.omath.sgn(p.omath.nonRealPart(z))
		if p.omath.abs(p.omath.nonRealPart(z))<1e-14 then sgn_data=p.omath.getOctonionNumberQ(qmath.getQuaternionNumber(0, 1, 0, 0), qmath.getQuaternionNumber(0, 0, 0, 0)) end
		local result = p.omath.pow(p.omath.abs(z), p.omath.inverse(n)) * p.omath.exp(sgn_data * (p.omath.arg(z) + (num-1)*(2*math.pi) ) * p.omath.inverse(n))
		result:clean()
		return result
	end,

	sin=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.vectorPartOctonion(z)
		return ( math.cosh(p.omath.abs(u)) * math.sin(nonL.real) ) + ( p.omath.sgn(u) * math.sinh(p.omath.abs(u)) * math.cos(nonL.real) )
	end,
	cos=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.vectorPartOctonion(z)
		return ( math.cosh(p.omath.abs(u)) * math.cos(nonL.real) ) - ( p.omath.sgn(u) * math.sinh(p.omath.abs(u)) * math.sin(nonL.real) )
	end,
	tan=function(z)
		local theta = p.omath.readComplexNumber(z)
		return p.omath.sin(theta) * p.omath.inverse( p.omath.cos(theta) )
	end,
	cot=function(z)
		local theta = p.omath.readComplexNumber(z)
		return p.omath.cos(theta) * p.omath.inverse( p.omath.sin(theta) )
	end,
	asin=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u, v = p.omath.vectorPartOctonion(z), 
					p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		local sgnu = p.omath.sgn(u)
		if math.abs(sgnu.nonL.imag) < 1e-12 and math.abs(sgnu.nonL.jpart) < 1e-12 and math.abs(sgnu.nonL.kpart) < 1e-12 and math.abs(sgnu.valL.real) and
			 math.abs(sgnu.valL.imag) < 1e-12 and math.abs(sgnu.valL.jpart) < 1e-12 and math.abs(sgnu.valL.kpart) < 1e-12 then sgnu.nonL.imag = 1 end
		return -sgnu * p.omath.asinh( v * sgnu )
	end,
	acos=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u, v = p.omath.vectorPartOctonion(z), 
					p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		local sgnu = p.omath.sgn(u)
		if math.abs(sgnu.nonL.imag) < 1e-12 and math.abs(sgnu.nonL.jpart) < 1e-12 and math.abs(sgnu.nonL.kpart) < 1e-12 and math.abs(sgnu.valL.real) and
			 math.abs(sgnu.valL.imag) < 1e-12 and math.abs(sgnu.valL.jpart) < 1e-12 and math.abs(sgnu.valL.kpart) < 1e-12 then sgnu.nonL.imag = 1 end
		return -sgnu * p.omath.acosh( v )
	end,
	atan=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u, v = p.omath.vectorPartOctonion(z), 
					p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		local sgnu = p.omath.sgn(u)
		if math.abs(sgnu.nonL.imag) < 1e-12 and math.abs(sgnu.nonL.jpart) < 1e-12 and math.abs(sgnu.nonL.kpart) < 1e-12 and math.abs(sgnu.valL.real) and
			 math.abs(sgnu.valL.imag) < 1e-12 and math.abs(sgnu.valL.jpart) < 1e-12 and math.abs(sgnu.valL.kpart) < 1e-12 then sgnu.nonL.imag = 1 end
		return -sgnu * p.omath.atanh( v * sgnu )
	end,
	acot=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u, v = p.omath.vectorPartOctonion(z), 
					p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		local sgnu = p.omath.sgn(u)
		if math.abs(sgnu.nonL.imag) < 1e-12 and math.abs(sgnu.nonL.jpart) < 1e-12 and math.abs(sgnu.nonL.kpart) < 1e-12 and math.abs(sgnu.valL.real) and
			 math.abs(sgnu.valL.imag) < 1e-12 and math.abs(sgnu.valL.jpart) < 1e-12 and math.abs(sgnu.valL.kpart) < 1e-12 then sgnu.nonL.imag = 1 end
		return sgnu * p.omath.acoth( v * sgnu )
	end,
	sinh=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.vectorPartOctonion(z)
		return ( math.cos(p.omath.abs(u)) * math.sinh(nonL.real) ) + ( p.omath.sgn(u) * math.sin(p.omath.abs(u)) * math.cosh(nonL.real) )
	end,
	cosh=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.vectorPartOctonion(z)
		return ( math.cos(p.omath.abs(u)) * math.cosh(nonL.real) ) + ( p.omath.sgn(u) * math.sin(p.omath.abs(u)) * math.sinh(nonL.real) )
	end,
	tanh=function(z)
		local theta = p.omath.readComplexNumber(z)
		return p.omath.sinh(theta) * p.omath.inverse( p.omath.cosh(theta) )
	end,
	coth=function(z)
		local theta = p.omath.readComplexNumber(z)
		return p.omath.cosh(theta) * p.omath.inverse( p.omath.sinh(theta) )
	end,

	asinh=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		return p.omath.elog( u + p.omath.sqrt( u * u + p.omath.getOctonionNumber(1,0,0,0,0,0,0,0) ) )
	end,
	acosh=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		return p.omath.elog( u + p.omath.sqrt( u + p.omath.getOctonionNumber(1,0,0,0,0,0,0,0) ) * p.omath.sqrt( u + p.omath.getOctonionNumber(-1,0,0,0,0,0,0,0) ) )
	end,
	atanh=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		return ( p.omath.elog( p.omath.getOctonionNumber(1,0,0,0,0,0,0,0) + u ) - p.omath.elog( p.omath.getOctonionNumber(1,0,0,0,0,0,0,0) - u ) ) / 2
	end,
	acoth=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		return ( p.omath.elog( p.omath.getOctonionNumber(1,0,0,0,0,0,0,0) + p.omath.inverse(u) ) - p.omath.elog( p.omath.getOctonionNumber(1,0,0,0,0,0,0,0) - p.omath.inverse(u) ) ) / 2
	end,
	dot = function (op1, op2) 
		local nonL1, valL1 = p.omath.readOctonionNumberQpart(op1)
		local nonL2, valL2 = p.omath.readOctonionNumberQpart(op2)
		return nonL1.real * nonL2.real + nonL1.imag * nonL2.imag + nonL1.jpart * nonL2.jpart + nonL1.kpart * nonL2.kpart +
			valL1.real * valL2.real + valL1.imag * valL2.imag + valL1.jpart * valL2.jpart + valL1.kpart * valL2.kpart
	end,
	outer = function (op1, op2) 
		local nonL1, valL1 = p.omath.readOctonionNumberQpart(op1)
		local nonL2, valL2 = p.omath.readOctonionNumberQpart(op2)
		local x1, x2, x3, x4, x5, x6, x7 = nonL1.imag, nonL1.jpart, nonL1.kpart, valL1.real, valL1.imag, valL1.jpart, valL1.kpart
		local y1, y2, y3, y4, y5, y6, y7 = nonL2.imag, nonL2.jpart, nonL2.kpart, valL2.real, valL2.imag, valL2.jpart, valL2.kpart
		return p.omath.getOctonionNumber(0,
			x2*y4 - x4*y2 + x3*y7 - x7*y3 + x5*y6 - x6*y5,
			x3*y5 - x5*y3 + x4*y1 - x1*y4 + x6*y7 - x7*y6,
			x4*y6 - x6*y4 + x5*y2 - x2*y5 + x7*y1 - x1*y7,
			x5*y7 - x7*y5 + x6*y3 - x3*y6 + x1*y2 - x2*y1,
			x6*y1 - x1*y6 + x7*y4 - x4*y7 + x2*y3 - x3*y2,
			x7*y2 - x2*y7 + x1*y5 - x5*y1 + x3*y4 - x4*y3,
			x1*y3 - x3*y1 + x2*y6 - x6*y2 + x4*y5 - x5*y4
		)
	end,
	scalarPartQuaternion=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return qmath.getQuaternionNumber(nonL.real, 0, 0, 0)
	end,
	scalarPartOctonion=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return p.omath.getOctonionNumber(nonL.real, 0, 0, 0, 0, 0, 0, 0)
	end,
	nonRealPart=function(z) 
		return p.omath.vectorPartOctonion(z)
	end,
	vectorPartOctonion=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		return p.omath.getOctonionNumber(0, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
	end,
	sgn=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local nonL_len, valL_len = qmath.abs(nonL), qmath.abs(valL)
		local length = math.sqrt( nonL_len * nonL_len + valL_len * valL_len )
		if length <= 0 then return p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0, 0) end
		return z / length
	end,
	arg=function(z) --TODO: verify
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local nonL_len, valL_len = qmath.abs(nonL), qmath.abs(valL)
		local length = math.sqrt( nonL_len * nonL_len + valL_len * valL_len )
		return math.acos( nonL.real / length )
	end,
	cis=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.vectorPartOctonion(z)
		return p.omath.cos(u) + p.omath.getOctonionNumber(0, 1, 0, 0, 0, 0, 0, 0) * p.omath.sin(u)
	end,

	exp=function(z) --Cayley-Dickson construction
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u = p.omath.vectorPartOctonion(z)
		return ( (p.omath.sgn(u) * math.sin(p.omath.abs(u))) + math.cos(p.omath.abs(u))) * math.exp(nonL.real)
	end,
	elog=function(z)
		local nonL, valL = p.omath.readOctonionNumberQpart(z)
		local u, v = p.omath.vectorPartOctonion(z), 
					p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
		return (p.omath.sgn(u) * p.omath.arg(v)) + math.log(p.omath.abs(v))
	end,
	log=function(z,basez)
		if basez~=nil then return p.omath.elog(basez) * p.omath.inverse(p.omath.elog(z)) end
		return p.omath.elog(z)
	end,
	pow=function(op1,op2)
		local check_op1, check_op2 = tonumber(tostring(op1)) or -1, tonumber(tostring(op2)) or -1
		if check_op1 == 1 then return p.omath.getOctonionNumber(1, 0, 0, 0, 0, 0, 0, 0) end -- 1^z === 1
		if check_op2 == 1 then return op1 end -- z^1 === z
		if check_op2 == 0 then -- z^0
			if check_op1 ~= 0 then return p.omath.getOctonionNumber(1, 0, 0, 0, 0, 0, 0, 0) -- z^0 === 1, z ≠ 0
			else return p.omath.getOctonionNumber(tonumber('nan'), 0, 0, 0, 0, 0, 0, 0) end --0^0 Indeterminate
		elseif check_op1 == 0 then 
			if check_op2 < 0 then return p.omath.getOctonionNumber(tonumber('inf'), 0, 0, 0, 0, 0, 0, 0) end -- 0^(-n) Infinity
			return p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0, 0) -- 0^z === 0, z ≠ 0
		end
		--a ^ z
		local _zero = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0, 0)
		local a = p.omath.getOctonionNumberQ(p.omath.readOctonionNumberQpart(op1))
		local z = p.omath.getOctonionNumberQ(p.omath.readOctonionNumberQpart(op2))
		a:clean();z:clean();
		if a.valL == _zero and z.valL == _zero then 
			return p.omath.getOctonionNumberQ(qmath.pow(a.nonL, z.nonL), qmath.getQuaternionNumber(0, 0, 0, 0))
		end
		return p.omath.exp(z * p.omath.elog(a)):clean()
	end,
	CayleyDickson=function(this) --Cayley-Dickson construction
		local nonL, valL = p.omath.readOctonionNumberQpart(this)
		local q_zero = qmath.getQuaternionNumber(0, 0, 0, 0)
		local body = ''
		local function zero_flag(num)
			return num ~= 0 and 1 or 0
		end
		local check_sign = qmath.readComplexNumber(valL)
		check_sign:clean()

		if nonL ~= q_zero then body = tostring(nonL) end
		
		local lmag_body = ''
		if valL ~= q_zero then 
			if(zero_flag(check_sign.real)+zero_flag(check_sign.imag)+zero_flag(check_sign.jpart)+zero_flag(check_sign.kpart) >= 2)then
				lmag_body = '+('.. tostring(valL) ..')'
			else
				if (
					(check_sign.real > 0) or
					(check_sign.real == 0 and check_sign.imag > 0) or
					(check_sign.real == 0 and check_sign.imag == 0 and check_sign.jpart > 0) or
					(check_sign.real == 0 and check_sign.imag == 0 and check_sign.jpart == 0 and check_sign.kpart > 0)
				) then lmag_body =  '+' .. lmag_body end
				if check_sign.real == 1 and check_sign.imag == 0 and check_sign.jpart == 0 and check_sign.kpart == 0 then
				else
					lmag_body = lmag_body..tostring(valL)
				end
			end
			if lmag_body ~= '' then
				body = body .. lmag_body .. '*l'
			end
		end
		if p._isNaN(nonL.real) or p._isNaN(nonL.imag) or p._isNaN(nonL.imag) or p._isNaN(nonL.imag) or
			p._isNaN(check_sign.real) or p._isNaN(check_sign.imag) or p._isNaN(check_sign.imag) or p._isNaN(check_sign.imag)then body = 'nan' end
		if body == '' then body = '0' end
		return body
	end,
	random=function(op1, op2)
		if type(op1)==type(nil) and type(op2)==type(nil) then return p.omath.getOctonionNumberQ(qmath.random(), qmath.getQuaternionNumber(0, 0, 0, 0)) end
		local op1_a, op1_b = p.omath.readOctonionNumberQpart(op1)
		local op2_a, op2_b = p.omath.readOctonionNumberQpart(op2)
		if type(op2)==type(nil) then return p.omath.getOctonionNumberQ(qmath.random(op1_a), qmath.random(op1_b)) end
		return p.omath.getOctonionNumberQ(qmath.random(op1_a, op2_a), qmath.random(op1_b, op2_b))
	end,
	isReal=function(z) return p.omath.abs(p.omath.nonRealPart(z)) < 1e-14 end,

	OctonionNumberMeta = {
		__add = function (op1, op2) 
			local op1_a, op1_b = p.omath.readOctonionNumberQpart(op1)
			local op2_a, op2_b = p.omath.readOctonionNumberQpart(op2)
			return p.omath.getOctonionNumberQ(op1_a + op2_a, op1_b + op2_b) 
		end,
		__sub = function (op1, op2) 
			local op1_a, op1_b = p.omath.readOctonionNumberQpart(op1)
			local op2_a, op2_b = p.omath.readOctonionNumberQpart(op2)
			return p.omath.getOctonionNumberQ(op1_a - op2_a, op1_b - op2_b) 
		end,
		__mul = function (op1, op2) 
			local _a, _b = p.omath.readOctonionNumberQpart(op1)
			local _c, _d = p.omath.readOctonionNumberQpart(op2)
			local r_nonL = _a*_c - qmath.conjugate(_d)*_b
			local r_valL = _d*_a + _b*qmath.conjugate(_c)
			return p.omath.getOctonionNumberQ(r_nonL, r_valL) 
		end,
		__div = function (op1, op2) 
			local op_div = p.omath.inverse(op2)
			local _a, _b = p.omath.readOctonionNumberQpart(op1)
			local _c, _d = p.omath.readOctonionNumberQpart(op_div)
			local r_nonL = _a*_c - qmath.conjugate(_d)*_b
			local r_valL = _d*_a + _b*qmath.conjugate(_c)
			return p.omath.getOctonionNumberQ(r_nonL, r_valL) 
		end,
		__mod = function (op1, op2) 
			local x = p.omath.readComplexNumber(op1)
			local y = p.omath.readComplexNumber(op2)
			return x - y * qmath.floor(x / y) 
		end,
		__tostring = function (this) 
			local nonL, valL = p.omath.readOctonionNumberQpart(this)
			local body = ''
			if nonL.real ~= 0 then body = tostring(nonL.real) end
			if nonL.imag ~= 0 then 
				if body ~= '' and nonL.imag > 0 then body = body .. '+' end
				if nonL.imag == -1 then  body = body .. '-' end
				if math.abs(nonL.imag) ~= 1 then body = body .. tostring(nonL.imag) end
				body = body .. 'i'
			end
			if nonL.jpart ~= 0 then 
				if body ~= '' and nonL.jpart > 0 then body = body .. '+' end
				if nonL.jpart == -1 then  body = body .. '-' end
				if math.abs(nonL.jpart) ~= 1 then body = body .. tostring(nonL.jpart) end
				body = body .. 'j'
			end
			if nonL.kpart ~= 0 then 
				if body ~= '' and nonL.kpart > 0 then body = body .. '+' end
				if nonL.kpart == -1 then  body = body .. '-' end
				if math.abs(nonL.kpart) ~= 1 then body = body .. tostring(nonL.kpart) end
				body = body .. 'k'
			end
			if valL.real ~= 0 then 
				if body ~= '' and valL.real > 0 then body = body .. '+' end
				if valL.real == -1 then  body = body .. '-' end
				if math.abs(valL.real) ~= 1 then body = body .. tostring(valL.real) .. '*' end
				body = body .. 'l'
			end
			if valL.imag ~= 0 then 
				if body ~= '' and valL.imag > 0 then body = body .. '+' end
				if valL.imag == -1 then  body = body .. '-' end
				if math.abs(valL.imag) ~= 1 then body = body .. tostring(valL.imag) .. '*' end
				body = body .. 'il'
			end
			if valL.jpart ~= 0 then 
				if body ~= '' and valL.jpart > 0 then body = body .. '+' end
				if valL.jpart == -1 then  body = body .. '-' end
				if math.abs(valL.jpart) ~= 1 then body = body .. tostring(valL.jpart) .. '*' end
				body = body .. 'jl'
			end
			if valL.kpart ~= 0 then 
				if body ~= '' and valL.kpart > 0 then body = body .. '+' end
				if valL.kpart == -1 then  body = body .. '-' end
				if math.abs(valL.kpart) ~= 1 then body = body .. tostring(valL.kpart) .. '*' end
				body = body .. 'kl'
			end
			if p._isNaN(nonL.real) or p._isNaN(nonL.imag) or p._isNaN(nonL.jpart) or p._isNaN(nonL.kpart) or
				p._isNaN(valL.real) or p._isNaN(valL.imag) or p._isNaN(valL.jpart) or p._isNaN(valL.kpart) then body = 'nan' end
			if body == '' then body = '0' end
			return body
		end,
		__unm = function (this)
			return p.omath.getOctonionNumberQ(-this.nonL, -this.valL) 
		end,
		__eq = function (op1, op2)
			return op1.nonL == op2.nonL and op1.valL == op2.valL
		end,
	},
	ele=function(id)
		local _zero = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0, 0)
		local eles = (p.omath.elements or {})
		local id_msg = tonumber(tostring(id)) or 0
		return eles[id_msg+1]or _zero
	end,
	readComplexNumber = function(z)
		if type(z) == type({}) then --if already be complex number, don't run string find.
			if z.numberType == "complex" then
				return p.omath.getOctonionNumber(z.real, z.imag, 0, 0, 0, 0, 0, 0)
			elseif z.numberType == "quaternion" then
				return p.omath.getOctonionNumber(z.real, z.imag, z.jpart, z.kpart, 0, 0, 0, 0)
			elseif z.numberType == "octonion" then
				return z
			end
		elseif type(z) == type(0) then
			return p.omath.getOctonionNumber(z, 0, 0, 0, 0, 0, 0, 0)
		elseif type(z) == type(true) then
			return p.omath.getOctonionNumber(z and 1 or 0, 0, 0, 0, 0, 0, 0, 0)
		end
	end,
	readOctonionNumberQpart = function(z)
		if type(z) == type({}) then --if already be complex number, don't run string find.
			if z.numberType == "complex" then
				return qmath.getQuaternionNumber(z.real, z.imag, 0, 0), qmath.getQuaternionNumber(0, 0, 0, 0)
			elseif z.numberType == "quaternion" then
				return qmath.getQuaternionNumber(z.real, z.imag, z.jpart, z.kpart), qmath.getQuaternionNumber(0, 0, 0, 0)
			elseif z.numberType == "octonion" then
				return z.nonL, z.valL
			end
		elseif type(z) == type(0) then
			return qmath.getQuaternionNumber(z, 0, 0, 0), qmath.getQuaternionNumber(0, 0, 0, 0)
		elseif type(z) == type(true) then
			return qmath.getQuaternionNumber(z and 1 or 0, 0, 0, 0), qmath.getQuaternionNumber(0, 0, 0, 0)
		end
	end,
	getOctonionNumberQ = function(nonL, valL)
		return p.omath.getOctonionNumber(nonL.real, nonL.imag, nonL.jpart, nonL.kpart, valL.real, valL.imag, valL.jpart, valL.kpart)
	end,
	getOctonionNumber = function(real, imag, jpart, kpart, lpart, ilmag, jlpart, klpart)
		local OctonionNumber = {}
		setmetatable(OctonionNumber,p.omath.OctonionNumberMeta) 
		function OctonionNumber:update()
			self.nonL:update()
			self.valL:update()
			self.argument = 0
			self.length = math.sqrt( self.nonL.length * self.nonL.length + self.valL.length * self.valL.length )
		end
		function OctonionNumber:clean()
			self.nonL:clean()
			self.valL:clean()
			return self
		end
		OctonionNumber.nonL = qmath.getQuaternionNumber(real, imag, jpart, kpart)
		OctonionNumber.valL = qmath.getQuaternionNumber(lpart, ilmag, jlpart, klpart)
		OctonionNumber.numberType = "octonion"
		return OctonionNumber
	end,
	toOctonionNumber = function(num_str)
		local real, imag, jpart, kpart, lpart, ilpart, jlpart, klpart
		if num_str == nil then return nil end
		
		if type(num_str) == type({}) then --if already be complex number, don't run string find.
			if num_str.numberType == "complex" then
				return p.omath.getOctonionNumber(
					num_str.real, num_str.imag, 0, 0, 0, 0, 0, 0
				)
			elseif num_str.numberType == "quaternion" then
				return p.omath.getOctonionNumber(
					num_str.real, num_str.imag, num_str.jpart, num_str.kpart, 0, 0, 0, 0
				)
			elseif num_str.numberType == "octonion" then
				return num_str
			end
		elseif type(num_str) == type(0) then
			return p.omath.getOctonionNumber(num_str, 0, 0, 0, 0, 0, 0, 0)
		elseif type(num_str) == type(true) then
			return p.omath.getOctonionNumber(num_str and 1 or 0, 0, 0, 0, 0, 0, 0, 0)
		end

		if ( type(num_str)==type(0) or ( (type(num_str)==type({"table"})) and type(num_str.real)==type(0) ) ) then
			real, imag, jpart, kpart, lpart, ilpart, jlpart, klpart = tonumber(num_str) or num_str.real, (tonumber(num_str) and 0) or (num_str.imag or 0), (tonumber(num_str) and 0) or (num_str.jpart or 0), (tonumber(num_str) and 0) or (num_str.kpart or 0), 0, 0, 0, 0
		elseif ( (num_str.nonL or {}).numberType == "quaternion" ) then
			real, imag, jpart, kpart, lpart, ilpart, jlpart, klpart = qmath.readPart(num_str.nonL), qmath.readPart(num_str.valL or qmath.getQuaternionNumber(0,0,0,0))
		else
			real, imag, jpart, kpart, lpart, ilpart, jlpart, klpart = p.omath.toOctonionNumberPart(tostring(num_str))
		end
		if real == nil or imag == nil or jpart == nil or kpart == nil or lpart == nil or ilpart == nil or jlpart == nil or klpart == nil then return nil end
		return p.omath.getOctonionNumber(real, imag, jpart, kpart, lpart, ilpart, jlpart, klpart)
	end,
	toOctonionNumberPart = function(num_str)
		if type(num_str) == type(function()end) then return end
		if type(num_str) == type(true) then if num_str then return 1,0,0,0,0,0,0,0 else return 0,0,0,0,0,0,0,0 end end

		local body = ''
		local real, imag, jpart, kpart, lpart, ilpart, jlpart, klpart = 0, 0, 0, 0, 0, 0, 0, 0
		local split_str = mw.text.split(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(
				mw.ustring.gsub(num_str or '','(%d)%s*%*%s*([ijkl])','%1%2'),
			'%s+',''),'%++([%d%.])',',+%1'),'%++([ijkl])',',+1%1'),'%-+([%d%.])',',-%1'),'%-+([ijkl])',',-1%1'),'%*+([%d%.])',',*%1'),'%*+([ijkl])',',*1%1'),'%/+([%d%.])',',/%1'),'%/+([ijkl])',',/1%1'),',')
		local first = true
		local continue = false
		for k,v in pairs(split_str) do
			continue = false
			local val = mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.text.trim(v),'^(%.)','0%1'),'^([%d%.])','+%1'),'([%+%-])([%d%.])','%1\48%2'),'^([ijkl]+)','+1%1')
			if mw.ustring.find(val,"%/") or mw.ustring.find(val,"%*") then return end

			if val == nil or val == '' then if first == true then first = false continue = true else return end end
			if not continue then
				local num_text = mw.ustring.match(val,"[%+%-][%d%.]+[ijkl]*")
				if num_text ~= val then return end
				local num_part = tonumber(mw.ustring.match(num_text,"[%+%-][%d%.]+"))
				if num_part == nil then return end
				local f_start, f_end = mw.ustring.find(num_text,"[ijkl]+")
				local part_str = ''
				if f_start then part_str = mw.ustring.sub(num_text, f_start, f_end) end
				
				if part_str == "" then real = real + num_part -- +1.0
				elseif part_str == "i" then imag = imag + num_part -- +i
				elseif part_str == "j" then jpart = jpart + num_part -- +j
				elseif part_str == "k" then kpart = kpart + num_part -- +k
				elseif part_str == "l" then lpart = lpart + num_part -- +l

				elseif part_str == "ij" then kpart = kpart + num_part -- +ij == +k
				elseif part_str == "ik" then jpart = jpart - num_part -- +ik == -j
				elseif part_str == "il" then ilpart = ilpart + num_part -- +il == +il

				elseif part_str == "ji" then kpart = kpart - num_part -- +ji == -k
				elseif part_str == "jk" then imag = imag + num_part -- +jk == +i
				elseif part_str == "jl" then jlpart = jlpart + num_part -- +jl == +jl

				elseif part_str == "ki" then jpart = jpart + num_part -- +ki == +j
				elseif part_str == "kj" then imag = imag - num_part -- +kj == -i
				elseif part_str == "kl" then klpart = klpart + num_part -- +kl == +kl

				elseif part_str == "li" then ilpart = ilpart - num_part -- +li == -il
				elseif part_str == "lj" then jlpart = jlpart - num_part -- +lj == -jl
				elseif part_str == "lk" then klpart = klpart - num_part -- +lk == -kl
				end
			end
		end
		return real, imag, jpart, kpart, lpart, ilpart, jlpart, klpart
	end,
	halfNumberParts = function(num)
		local nonL, valL = p.omath.readOctonionNumberQpart(num)
		return {nonL, valL}
	end,
	init = function()
		p.omath.pi = p.omath.getOctonionNumber(math.pi, 0, 0, 0, 0, 0, 0, 0) 
		p.omath["π"] = p.omath.getOctonionNumber(math.pi, 0, 0, 0, 0, 0, 0, 0)
		p.omath["°"] = p.omath.getOctonionNumber(math.pi/180, 0, 0, 0, 0, 0, 0, 0)
		p.omath.e = p.omath.getOctonionNumber(math.exp(1), 0, 0, 0, 0, 0, 0, 0)
		p.omath.nan = p.omath.getOctonionNumber(tonumber("nan"), tonumber("nan"), tonumber("nan"), tonumber("nan"), tonumber("nan"), tonumber("nan"), tonumber("nan"), tonumber("nan")) 
		p.omath.zero = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0, 0) 
		p.omath.one = p.omath.getOctonionNumber(1, 0, 0, 0, 0, 0, 0, 0) 
		p.omath[-1] = p.omath.getOctonionNumber(-1, 0, 0, 0, 0, 0, 0, 0) 
		p.omath.i = p.omath.getOctonionNumber(0, 1, 0, 0, 0, 0, 0, 0) 
		p.omath.j = p.omath.getOctonionNumber(0, 0, 1, 0, 0, 0, 0, 0)
		p.omath.k = p.omath.getOctonionNumber(0, 0, 0, 1, 0, 0, 0, 0) 
		p.omath.l = p.omath.getOctonionNumber(0, 0, 0, 0, 1, 0, 0, 0) 
		
		p.omath.ij = p.omath.getOctonionNumber(0, 0, 0, 1, 0, 0, 0, 0)-- +k
		p.omath.ik = p.omath.getOctonionNumber(0, 0,-1, 0, 0, 0, 0, 0)-- -j
		p.omath.il = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 1, 0, 0)-- +il
		
		p.omath.ji = p.omath.getOctonionNumber(0, 0, 0,-1, 0, 0, 0, 0)-- -k
		p.omath.jk = p.omath.getOctonionNumber(0, 1, 0, 0, 0, 0, 0, 0)-- +i
		p.omath.jl = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 1, 0)-- +jl
		
		p.omath.ki = p.omath.getOctonionNumber(0, 0, 1, 0, 0, 0, 0, 0)-- +j
		p.omath.kj = p.omath.getOctonionNumber(0,-1, 0, 0, 0, 0, 0, 0)-- -i
		p.omath.kl = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0, 1)-- +kl
		
		p.omath.li = p.omath.getOctonionNumber(0, 0, 0, 0, 0,-1, 0, 0)-- -il
		p.omath.lj = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0,-1, 0)-- -jl
		p.omath.lk = p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0,-1)-- -kl
		
		p.omath[0],p.omath[1] = p.omath.zero,p.omath.one
		p.omath.numberType = comp_lib._numberType
		p.omath.constructor = p.omath.toOctonionNumber
		
		p.omath.elements = {
			p.omath.getOctonionNumber(1, 0, 0, 0, 0, 0, 0, 0),
			p.omath.getOctonionNumber(0, 1, 0, 0, 0, 0, 0, 0),
			p.omath.getOctonionNumber(0, 0, 1, 0, 0, 0, 0, 0),
			p.omath.getOctonionNumber(0, 0, 0, 1, 0, 0, 0, 0),
			p.omath.getOctonionNumber(0, 0, 0, 0, 1, 0, 0, 0),
			p.omath.getOctonionNumber(0, 0, 0, 0, 0, 1, 0, 0),
			p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 1, 0),
			p.omath.getOctonionNumber(0, 0, 0, 0, 0, 0, 0, 1),
		}

		return p.omath
	end

}

return p