From a213d2559a9070daefc826705b47ea4de6b6523a Mon Sep 17 00:00:00 2001
From: Bas Nijholt <basnijholt@gmail.com>
Date: Wed, 10 Jan 2018 12:42:44 +0100
Subject: [PATCH] call np.linalg.lstsq with rcond=-1 to suppress the
FutureWarning in numpy 1.14
Closes #182
---
kwant/linalg/lll.py | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kwant/linalg/lll.py b/kwant/linalg/lll.py
index d01e7a0a..029dc8fa 100644
--- a/kwant/linalg/lll.py
+++ b/kwant/linalg/lll.py
@@ -100,7 +100,8 @@ def lll(basis, c=1.34):
if abs(u[i+1, i]) > 0.5:
ll_reduce(i+1)
i = max(i-1, 0)
- coefs = np.linalg.lstsq(vecs_orig.T, vecs.T)[0]
+ # TODO: change to rcond=None once we depend on numpy >= 1.14.
+ coefs = np.linalg.lstsq(vecs_orig.T, vecs.T, rcond=-1)[0]
if not np.allclose(np.round(coefs), coefs, atol=1e-6):
raise RuntimeError('LLL algorithm instability.')
if not is_c_reduced(vecs, c):
--
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