`testapprox` should be moved or inlined

[kimikage]

The "fixed" testset depends on testapprox which is defined in "test/normed.jl" (formerly named ufixed.jl).

FixedPointNumbers.jl/test/fixed.jl

Lines 86 to 90 in 70ae1d6

	@testset "testapprox" begin
	for T in [Fixed{Int8,7}, Fixed{Int16,8}, Fixed{Int16,10}]
	testapprox(T) # defined in ufixed.jl
	end
	end

FixedPointNumbers.jl/test/normed.jl

Lines 233 to 240 in 70ae1d6

	function testapprox(::Type{T}) where {T}
	for x = typemin(T):eps(T):typemax(T)-eps(T)
	y = x+eps(T)
	@test x ≈ y
	@test y ≈ x
	@test !(x ≈ y+eps(T))
	end
	end

This thwarts the selective execution of tests and causes an error(UndefVarError: testapprox not defined) in certain environments (e.g. Julia v1.0.3 32-bit ARMv7).

I think testapprox is not so complicated. It may be a good idea to inline the function or define it locally.
This may be off topic, but I also think there are too many test cases generated by testapprox (or its friend testtrunc). @test should be outside the loop.

[kimikage]

Umm...:confused:
Should I fix only the "approx"?

function testtrunc(inc::T) where {T}
    incf = convert(Float64, inc)
    tm = reinterpret(typemax(T))/reinterpret(one(T))
    Ti = FixedPointNumbers.rawtype(T)
    itr = zero(Ti):Ti(min(1e6, typemax(Ti)-1))
    pairs = ((x = reinterpret(T, i), xf = incf * i) for i in itr)
    @test all(t -> typeof(trunc(t.x)) == T,   pairs)
    @test all(t -> trunc(t.x) == trunc(t.xf), pairs)
    @test all(t -> typeof(round(t.x)) == T,   pairs)
    @test all(t -> round(t.x) == round(t.xf), pairs)
    @test all(t -> typeof(floor(t.x)) == T,   pairs)
    @test all(t -> floor(t.x) == floor(t.xf), pairs)
    @test all(t -> typeof(ceil(t.x)) == T,    pairs)
    @test all(t -> ceil(t.x) == ceil(t.xf) || ceil(t.xf) > tm, pairs)

    @test all(t -> trunc(Int, t.x) == trunc(Int, t.xf), pairs)
    @test all(t -> round(Int, t.x) == round(Int, t.xf), pairs)
    @test all(t -> floor(Int, t.x) == floor(Int, t.xf), pairs)
    @test all(t -> ceil(Int, t.x) == ceil(Int, t.xf) || ceil(t.xf) > tm, pairs)
end

@testset "trunc" begin
    @testset "trunc $T" for T in (FixedPointNumbers.UF..., UF2...)
        testtrunc(eps(T))
    end
end

@testset "approx" begin
    @testset "approx $T" for T in FixedPointNumbers.UF
        xs = typemin(T):eps(T):typemax(T)-eps(T)
        @test all(x -> x ≈ x + eps(T), xs)
        @test all(x -> x + eps(T) ≈ x, xs)
        @test !any(x -> x - eps(T) ≈ x + eps(T), xs)
    end
end