Merge pull request #635 from ChristophHotter/adjoint_symbolics

adjoint(y::Symbolic{<:Number})

Author: bowenszhu

src/methods.jl

@@ -165,6 +165,8 @@ promote_symtype(::typeof(Base.conj), T::Type{<:Number}) = T
 Base.conj(s::Symbolic{<:Number}) = islike(s, Real) ? s : term(conj, s)
 promote_symtype(::typeof(Base.imag), T::Type{<:Number}) = Real
 Base.imag(s::Symbolic{<:Number}) = islike(s, Real) ? zero(symtype(s)) : term(imag, s)
+Base.adjoint(s::Symbolic{<:Number}) = conj(s)
+
 
 ## Booleans
 

test/basics.jl

@@ -357,3 +357,11 @@ end
     end
     @test repr(sin(x) + sin(x)) == "sin(x) + sin(x)"
 end
+
+@testset "Adjoint" begin
+    @syms x::Real y
+    ax = adjoint(x)
+    @test isequal(ax, x)
+    @test ax === x
+    @test isequal(adjoint(y), conj(y)) 
+end