[mlpack-svn] master: Use a deterministic starting point for max-cut test (944a39c)

[gitdub at big.cc.gt.atl.ga.us]

Repository : https://github.com/mlpack/mlpack

On branch  : master
Link       : https://github.com/mlpack/mlpack/compare/6b14d78fc09cb205ffa7a297f5e6310b2ad83e25...9147fd3ee8072669c18422de4ea6fbe8f964b423

>---------------------------------------------------------------

commit 944a39ce02fedba760ed47d46a65ac42fb99c1c0
Author: Stephen Tu <tu.stephenl at gmail.com>
Date:   Sun Jan 4 01:00:39 2015 -0800

    Use a deterministic starting point for max-cut test


>---------------------------------------------------------------

944a39ce02fedba760ed47d46a65ac42fb99c1c0
 src/mlpack/tests/lrsdp_test.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/mlpack/tests/lrsdp_test.cpp b/src/mlpack/tests/lrsdp_test.cpp
index 312efd7..3045f1a 100644
--- a/src/mlpack/tests/lrsdp_test.cpp
+++ b/src/mlpack/tests/lrsdp_test.cpp
@@ -155,9 +155,13 @@ BOOST_AUTO_TEST_CASE(ErdosRenyiRandomGraphMaxCutSDP)
   if (ceil(r) > laplacian.n_rows)
     r = laplacian.n_rows;
 
-  std::srand(0xDEADBEEF);
-  arma::mat coordinates = arma::randu<arma::mat>(laplacian.n_rows, ceil(r));
-  std::srand(std::time(nullptr));
+  // initialize coordinates to a feasible point
+  arma::mat coordinates(laplacian.n_rows, ceil(r));
+  coordinates.zeros();
+  for (size_t i = 0; i < coordinates.n_rows; ++i)
+  {
+    coordinates(i, i % coordinates.n_cols) = 1.;
+  }
 
   LRSDP maxcut(laplacian.n_rows, 0, coordinates);
   maxcut.SparseC() = laplacian;