prevent unnecessary conversion

JuliaLang · Aug 30, 2024 · 073e4aa · 073e4aa
1 parent 3974869
commit 073e4aa
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/base/intfuncs.jl b/base/intfuncs.jl
@@ -298,7 +298,10 @@ function invmod(n::T) where {T<:BitInteger}
 end
 
 # ^ for any x supporting *
-to_power_type(x::Number) = first(promote(x, one(x), x*x))
+function to_power_type(x::Number)
+    T = promote_type(typeof(x), typeof(one(x)), typeof(x*x))
+    convert(T, x)
+end
 to_power_type(x) = x
 @noinline throw_domerr_powbysq(::Any, p) = throw(DomainError(p, LazyString(
     "Cannot raise an integer x to a negative power ", p, ".",