Use tighter array types for round(T, Array) etc. when possible

base/floatfuncs.jl

@@ -67,13 +67,13 @@ round{T<:Integer}(::Type{T}, x::FloatingPoint, r::RoundingMode) = trunc(T,round(
 for f in (:trunc,:floor,:ceil,:round)
  @eval begin
  function ($f){T,R}(::Type{T}, x::AbstractArray{R,1})
- T[ ($f)(T, x[i]) for i = 1:length(x) ]
+ [ ($f)(T, x[i])::T for i = 1:length(x) ]
  end
  function ($f){T,R}(::Type{T}, x::AbstractArray{R,2})
- T[ ($f)(T, x[i,j]) for i = 1:size(x,1), j = 1:size(x,2) ]
+ [ ($f)(T, x[i,j])::T for i = 1:size(x,1), j = 1:size(x,2) ]
  end
  function ($f){T}(::Type{T}, x::AbstractArray)
- reshape(T[ ($f)(T, x[i]) for i = 1:length(x) ], size(x))
+ reshape([ ($f)(T, x[i])::T for i = 1:length(x) ], size(x))
  end
  end
 end
@@ -89,13 +89,13 @@ function round(x::AbstractArray, r::RoundingMode)
 end
 
 function round{T,R}(::Type{T}, x::AbstractArray{R,1}, r::RoundingMode)
- T[ round(T, x[i], r) for i = 1:length(x) ]
+ [ round(T, x[i], r)::T for i = 1:length(x) ]
 end
 function round{T,R}(::Type{T}, x::AbstractArray{R,2}, r::RoundingMode)
- T[ round(T, x[i,j], r) for i = 1:size(x,1), j = 1:size(x,2) ]
+ [ round(T, x[i,j], r)::T for i = 1:size(x,1), j = 1:size(x,2) ]
 end
 function round{T}(::Type{T}, x::AbstractArray, r::RoundingMode)
- reshape(T[ round(T, x[i], r) for i = 1:length(x) ], size(x))
+ reshape([ round(T, x[i], r)::T for i = 1:length(x) ], size(x))
 end
 
 # adapted from Matlab File Exchange roundsd: https://www.mathworks.com/matlabcentral/fileexchange/26212