complex numbers should be given equal place in Julia (#46476)

base/complex.jl

@@ -1067,18 +1067,32 @@ end
 #Requires two different RoundingModes for the real and imaginary components
 """
     round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]])
-    round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]]; digits=, base=10)
-    round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]]; sigdigits=, base=10)
+    round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]]; digits=0, base=10)
+    round(z::Complex[, RoundingModeReal, [RoundingModeImaginary]]; sigdigits, base=10)
 
 Return the nearest integral value of the same type as the complex-valued `z` to `z`,
 breaking ties using the specified [`RoundingMode`](@ref)s. The first
 [`RoundingMode`](@ref) is used for rounding the real components while the
 second is used for rounding the imaginary components.
 
+
+`RoundingModeReal` and `RoundingModeImaginary` default to [`RoundNearest`](@ref),
+which rounds to the nearest integer, with ties (fractional values of 0.5)
+being rounded to the nearest even integer.
+
 # Example
 ```jldoctest
 julia> round(3.14 + 4.5im)
 3.0 + 4.0im
+
+julia> round(3.14 + 4.5im, RoundUp, RoundNearestTiesUp)
+4.0 + 5.0im
+
+julia> round(3.14159 + 4.512im; digits = 1)
+3.1 + 4.5im
+
+julia> round(3.14159 + 4.512im; sigdigits = 3)
+3.14 + 4.51im
 ```
 """
 function round(z::Complex, rr::RoundingMode=RoundNearest, ri::RoundingMode=rr; kwargs...)