local imath = require "imath"imath is taken from Libraries and tools for
Lua.
imath is an arbitrary-precision
integer library for Lua based on
imath.
imath library:
__add(x,y) add(x,y) pow(x,y)
__div(x,y) bits(x) powmod(x,y,m)
__eq(x,y) compare(x,y) quotrem(x,y)
__idiv(x,y) div(x,y) root(x,n)
__le(x,y) egcd(x,y) shift(x,n)
__lt(x,y) gcd(x,y) sqr(x)
__mod(x,y) invmod(x,m) sqrt(x)
__mul(x,y) iseven(x) sub(x,y)
__pow(x,y) isodd(x) text(t)
__shl(x,n) iszero(x) tonumber(x)
__shr(x,n) lcm(x,y) tostring(x,[base])
__sub(x,y) mod(x,y) totext(x)
__tostring(x) mul(x,y) version
__unm(x) neg(x)
abs(x) new(x,[base])