Make exp(::Complex{Irrational}) work (JuliaLang#21596)

Addresses JuliaLang#21204.
Liozou · Apr 29, 2017 · a0c1429 · a0c1429
1 parent 41376e2
commit a0c1429
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/base/complex.jl b/base/complex.jl
@@ -504,7 +504,7 @@ function exp(z::Complex)
  end
  else
  er = exp(zr)
- if zi == zero(zi)
+ if iszero(zi)
  Complex(er, zi)
  else
  Complex(er*cos(zi), er*sin(zi))

diff --git a/test/complex.jl b/test/complex.jl
@@ -943,3 +943,10 @@ end
 
 # issue #19240
 @test big(1)/(10+10im) ≈ (5-5im)/big(100) ≈ big"0.05" - big"0.05"*im
+
+@testset "Complex Irrationals, issue #21204" begin
+ for x in (pi, e, catalan) # No need to test all of them
+ @test typeof(Complex(x, x)) == Complex{typeof(x)}
+ @test exp(complex(x, x)) ≈ exp(x) * cis(x)
+ end
+end