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Quaternion type: Difference between revisions
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=={{header|Julia}}==
This is from the [https://github.com/JuliaLang/julia/blob/master/examples/quaternion.jl quaternion example file] included with Julia 0.2, which implements a quaternion type complete with arithmetic, type conversions and promotion rules, and pretty-printing:
<lang julia>import Base: convert, promote_rule,
immutable Quaternion{T<:Real} <: Number
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