From c21dfe50df1c1399190a7c5c100c5d0b14ab7ef8 Mon Sep 17 00:00:00 2001
From: Pjotr Prins
Date: Fri, 28 Sep 2018 15:22:11 +0000
Subject: Fixes regression #179

---
 src/lapack.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'src/lapack.cpp')

diff --git a/src/lapack.cpp b/src/lapack.cpp
index eb5b16b..31b6add 100644
--- a/src/lapack.cpp
+++ b/src/lapack.cpp
@@ -253,8 +253,10 @@ double EigenDecomp(gsl_matrix *G, gsl_matrix *U, gsl_vector *eval,
   return d;
 }
 
-// Same as EigenDecomp but zeroes eigenvalues close to zero. When
-// negative eigenvalues remain a warning is issued.
+// Does NOT set eigenvalues to be positive. G gets destroyed. Returns
+// eigen trace and values in U and eval (eigenvalues).  Same as
+// EigenDecomp but zeroes eigenvalues close to zero. When negative
+// eigenvalues remain a warning is issued.
 double EigenDecomp_Zeroed(gsl_matrix *G, gsl_matrix *U, gsl_vector *eval,
                           const size_t flag_largematrix) {
   EigenDecomp(G,U,eval,flag_largematrix);
@@ -262,7 +264,8 @@ double EigenDecomp_Zeroed(gsl_matrix *G, gsl_matrix *U, gsl_vector *eval,
   int count_zero_eigenvalues = 0;
   int count_negative_eigenvalues = 0;
   for (size_t i = 0; i < eval->size; i++) {
-    if (std::abs(gsl_vector_get(eval, i)) < EIGEN_MINVALUE)
+    // if (std::abs(gsl_vector_get(eval, i)) < EIGEN_MINVALUE)
+    if (gsl_vector_get(eval, i) < 1e-10)
       gsl_vector_set(eval, i, 0.0);
     // checks
     if (gsl_vector_get(eval,i) == 0.0)
-- 
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