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KristofferC wants to merge 2 commits into from
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add prettier printing for duals #193

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9a91b37
add prettier printing for duals
KristofferC Feb 12, 2017
87947ed
implement in terms of Partials
KristofferC Feb 12, 2017
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9 changes: 4 additions & 5 deletions src/dual.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -404,9 +404,8 @@ end
###################

function Base.show{N}(io::IO, n::Dual{N})
print(io, "Dual(", value(n))
for i in 1:N
print(io, ",", partials(n, i))
end
print(io, ")")
parts, val = partials(n), value(n)
compact = get(io, :compact, false)
show(io, val)
show(io, parts, true)
end
28 changes: 27 additions & 1 deletion src/partials.jl
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Expand Up @@ -211,4 +211,30 @@ end
# Pretty Printing #
###################

Base.show{N}(io::IO, p::Partials{N}) = print(io, "Partials", p.values)
const _subscripts = ["₀", "₁", "₂", "₃", "₄", "₅", "₆", "₇", "₈", "₉"]

Base.show(io::IO, ::MIME"text/plain", p::Partials) = show(io, p)

function Base.show{N}(io::IO, parts::Partials{N}, showing_dual = false)
compact = get(io, :compact, false)
for (i, p) in enumerate(parts)
if showing_dual == true || i != 1
if signbit(p) && !isnan(p)
p = -p
print(io, compact ? "-" : " - ")
else
print(io, compact ? "+" : " + ")
end
end
show(io, p)
if !(isa(p, Integer) && !isa(p, Bool) || isa(p, AbstractFloat) && isfinite(p))
print(io, "*")
end
print(io, "ɛ")
if length(parts) > 1
for d in reverse(digits(i))
print(io, _subscripts[d + 1])
end
end
end
end