[hamradio-commits] [gnss-sdr] 133/251: avoiding division by zero

[Carles Fernandez]

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carles_fernandez-guest pushed a commit to branch master
in repository gnss-sdr.

commit f180de905dee0da2f6aca4e33adf1a60b207ed77
Author: Carles Fernandez <carles.fernandez at gmail.com>
Date:   Sat May 23 09:54:23 2015 +0200

    avoiding division by zero
---
 src/algorithms/telemetry_decoder/libs/viterbi_decoder.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/algorithms/telemetry_decoder/libs/viterbi_decoder.cc b/src/algorithms/telemetry_decoder/libs/viterbi_decoder.cc
index 9750d22..3a90ab1 100644
--- a/src/algorithms/telemetry_decoder/libs/viterbi_decoder.cc
+++ b/src/algorithms/telemetry_decoder/libs/viterbi_decoder.cc
@@ -338,7 +338,11 @@ int Viterbi_Decoder::do_tb_and_decode(int traceback_length, int requested_decodi
             state = it->get_anchestor_state_of_current_state(state);
             t_out--;
         }
-    indicator_metric /= n_im;
+    if(n_im > 0)
+        {
+            indicator_metric /= n_im;
+        }
+
     VLOG(BLOCK) << "indicator metric: " << indicator_metric;
     // remove old states
     if (d_trellis_paths.begin() + traceback_length + overstep_length <= d_trellis_paths.end())

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