From 6cc20eea504ce73ae32bafe8c2d40eabe1ba1f96 Mon Sep 17 00:00:00 2001
From: Fredrik Bagge Carlson <baggepinnen@gmail.com>
Date: Sun, 29 Dec 2019 15:12:50 +0800
Subject: [PATCH] prevent promotion to Float64 in unwrap

---
 src/utilities.jl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/utilities.jl b/src/utilities.jl
index 1efe7367c..6a7873b2f 100644
--- a/src/utilities.jl
+++ b/src/utilities.jl
@@ -105,7 +105,8 @@ function unwrap!(M::Array, dim=1)
         # d = M[i,:,:,...,:] - M[i-1,:,...,:]
         # M[i,:,:,...,:] -= floor((d+π) / (2π)) * 2π
         d = M[alldims(i)...] - M[alldims(i-1)...]
-        M[alldims(i)...] -= floor.((d .+ π) / 2π) * 2π
+        π2 = eltype(M)(2π)
+        M[alldims(i)...] -= floor.((d .+ π) / π2) * π2
     end
     return M
 end