Fix bug in pretty printing of CIs with negative values

Project.toml

@@ -1,7 +1,7 @@
 name = "Isoplot"
 uuid = "5adc30d5-9ddf-423c-bb15-ece697bec3ab"
 authors = ["C. Brenhin Keller <[email protected]>"]
-version = "0.2.4"
+version = "0.2.5"
 
 [deps]
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"

src/show.jl

@@ -23,7 +23,7 @@ end
 function Base.print(io::IO, x::CI)
     l = round(x.mean - x.lower, sigdigits=3)
     u = round(x.upper - x.mean, sigdigits=3)
-    d = floor(Int, log10(x.mean)) - floor(Int, log10(max(l,u)))
+    d = floor(Int, log10(abs(x.mean))) - floor(Int, log10(max(abs(l),abs(u))))
     m = round(x.mean, sigdigits=3+d)
     print(io, "$m +$u/-$l")
 end

test/runtests.jl

@@ -11,6 +11,9 @@ using Measurements
     @test ci == CI{Float64}(5.5, 3.0276503540974917, 5.5, 1.225, 9.775)
     @test "$ci" === "5.5 +4.28/-4.28"
     @test display(ci) != NaN
+
+    ci = CI(randn(100))
+    @test display(ci) != NaN
 end
 
 @testset "General" begin