From eca1adccea4b25dd0cc70592b90e45704a8b601e Mon Sep 17 00:00:00 2001
From: Joseph Weston <joseph@weston.cloud>
Date: Tue, 8 Jan 2019 10:03:31 +0100
Subject: [PATCH] remove unneeded numpy output storage
The 'out' parameter is only used when you don't want numpy to
allocate a new array for the result, which is not the case here.
---
kwant/physics/dispersion.py | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kwant/physics/dispersion.py b/kwant/physics/dispersion.py
index 4109be75..5c98bf26 100644
--- a/kwant/physics/dispersion.py
+++ b/kwant/physics/dispersion.py
@@ -139,8 +139,7 @@ class Bands:
if derivative_order >= 2: # compute curvatures
# ediff_{i,j} = 1 / (E_i - E_j) if i != j, else 0
ediff = energies.reshape((-1, 1)) - energies.reshape((1, -1))
- ediff = np.divide(1, ediff, out=np.zeros_like(ediff),
- where=(ediff != 0))
+ ediff = np.divide(1, ediff, where=(ediff != 0))
h2 = - (mat + mat.conjugate().transpose())
curvatures = np.sum(eigenvectors.conjugate() * (h2 @ eigenvectors)
- 2 * ediff * np.abs(ph1p)**2, axis=0).real
--
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