Merge pull request #64 from JuliaAlgebra/ratone

Implements one for rational

Author: blegat

src/rational.jl

@@ -65,3 +65,5 @@ _minus(s::RationalPoly, p) = (s.num - p * s.den) / s.den
 
 Base.zero(::RationalPoly{NT}) where {NT} = zero(NT)
 Base.zero(::Type{RationalPoly{NT, DT}}) where {NT, DT} = zero(NT)
+Base.one(::RationalPoly{NT}) where {NT} = one(NT)
+Base.one(::Type{RationalPoly{NT, DT}}) where {NT, DT} = one(NT)

test/rational.jl

@@ -12,6 +12,8 @@
     @test (1/x + 1/x) / 2 == ((1 / (x^2 - 1) + (x+1)) - (x+1)) * ((x^2 - 1) / x)
     #@test typeof(zero(1/x)) == Term{true, Int}
     @test iszero(zero(1/x))
+    @test zero(1/x) == 0
+    @test one(1/x) == 1
     #@test typeof(zero(RationalPoly{true, Float64, Int})) == Polynomial{true, Float64}
     #@test iszero(zero(RationalPoly{true, Float64, Int}))
     #@test typeof(x / 2) == Term{true, Float64}