Merge pull request #52 from jishnub/to_index

to_index for RealInfinity

Author: jishnub

Project.toml

@@ -1,7 +1,7 @@
 name = "Infinities"
 uuid = "e1ba4f0e-776d-440f-acd9-e1d2e9742647"
 authors = ["Sheehan Olver <[email protected]>"]
-version = "0.1.8"
+version = "0.1.9"
 
 [compat]
 Aqua = "0.8"

src/Infinities.jl

@@ -68,6 +68,8 @@ angle(x::RealInfinity) = π*signbit(x)
 string(y::RealInfinity) = signbit(y) ? "-∞" : "+∞"
 show(io::IO, y::RealInfinity) = print(io, string(y))
 
+Base.to_index(i::RealInfinity) = convert(Integer, i)
+
 #######
 # ComplexInfinity
 #######

test/runtests.jl

@@ -203,6 +203,8 @@ using Aqua
             @test convert(Float16, -∞) ≡ Float16(-∞) ≡ -Inf16
             @test convert(BigFloat, -∞)::BigFloat == BigFloat(-∞)::BigFloat == -BigFloat(Inf)
         end
+
+        @test Base.to_index(RealInfinity()) ≡ ℵ₀
     end
 
     @testset "ComplexInfinity" begin