From bf7a28e922645ea50c865375caa4be6dd3d5bf90 Mon Sep 17 00:00:00 2001
From: Jan Weidner <jw3126@gmail.com>
Date: Wed, 24 Nov 2021 11:00:05 +0100
Subject: [PATCH] improve eltype of symrange

---
 src/RangeHelpers.jl | 2 +-
 test/runtests.jl    | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/RangeHelpers.jl b/src/RangeHelpers.jl
index 6677c2c..f7de5af 100644
--- a/src/RangeHelpers.jl
+++ b/src/RangeHelpers.jl
@@ -410,7 +410,7 @@ function _symrange(center, start, step, stop, length)
 end
 
 function _symrange(center, start::Nothing, step, stop::Nothing, length)
-    c = float(something(center, zero(step)))
+    c = float(center*one(step))
     if isodd(length)
         hl = Int((length - 1)/2)
         anchorrange(c, pre=hl, post=hl, step=step)
diff --git a/test/runtests.jl b/test/runtests.jl
index b580c08..b9623b4 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -66,6 +66,9 @@ end
 
     r = @inferred symrange(stop=strictabove(-2), step=-1)
     @test r === 1.5:-1.0:-1.5
+
+    r = @inferred symrange(step=2.5f0, length=106)
+    @test eltype(r) === Float32
 end
 
 @testset "prolong" begin