From: Michael Orlitzky <michael@orlitzky.com>
Date: Mon, 3 Nov 2014 03:03:08 +0000 (-0500)
Subject: Convert "n" to an integer explicitly in has_admissible_extreme_rank().
X-Git-Url: http://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=f32328c79ac937b3cbbbbfa92e93741f0d373261;p=sage.d.git

Convert "n" to an integer explicitly in has_admissible_extreme_rank().
---

diff --git a/mjo/cone/doubly_nonnegative.py b/mjo/cone/doubly_nonnegative.py
index b43c974..89bacb9 100644
--- a/mjo/cone/doubly_nonnegative.py
+++ b/mjo/cone/doubly_nonnegative.py
@@ -99,10 +99,12 @@ def has_admissible_extreme_rank(A):
 
     """
     if not A.is_symmetric():
+        # This function is more or less internal, so blow up if passed
+        # something unexpected.
         raise ValueError('The matrix ``A`` must be symmetric.')
 
     r = rank(A)
-    n = A.nrows() # Columns would work, too, since ``A`` is symmetric.
+    n = ZZ(A.nrows()) # Columns would work, too, since ``A`` is symmetric.
 
     if r == 0:
         # Zero is in the doubly-nonnegative cone.