Dispatch for exponentiation on Float32 intervals (#482)

* Dispatch for exponentiation on Float32 intervals * Update functions.jl * ups * add test Co-authored-by: lucaferranti <49938764+lucaferranti@users.noreply.github.com>
JuliaIntervals · May 7, 2022 · 06f49c2 · 06f49c2
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commit 06f49c2
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diff --git a/src/intervals/functions.jl b/src/intervals/functions.jl
@@ -9,7 +9,7 @@
 for T in (:Integer, :Float64, :BigFloat, :Interval)
     @eval ^(a::Interval{Float64}, x::$T) = atomic(Interval{Float64}, bigequiv(a)^x)
 end
-
+^(a::Interval{Float32}, x::Interval) = atomic(Interval{Float32}, bigequiv(a)^x)
 
 # Integer power:
 

diff --git a/test/interval_tests/numeric.jl b/test/interval_tests/numeric.jl
@@ -377,6 +377,7 @@ end
         a = Interval{Float32}(1e38)
         b = Interval{Float32}(1e2)
         @test a * b == Interval{Float32}(floatmax(Float32), Inf)
+        @test Interval(1.0f0) ^ Interval(1.0f0) == Interval(1.0f0) # test for PR #482
     end