[hamradio-commits] [gnss-sdr] 45/236: updating

[Carles Fernandez]

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

commit 505b13a21a473d801bf2d758ca84ad8a86bcdf95
Author: Carles Fernandez <carles.fernandez at gmail.com>
Date:   Tue Feb 16 18:46:37 2016 +0100

    updating
---
 .../libs/volk_gnsssdr_module/volk_gnsssdr/lib/qa_utils.cc           | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/qa_utils.cc b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/qa_utils.cc
index d4f06e1..e849ce1 100644
--- a/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/qa_utils.cc
+++ b/src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/qa_utils.cc
@@ -76,8 +76,10 @@ void load_random_data(void *data, volk_gnsssdr_type_t type, unsigned int n)
                         else ((uint32_t *)data)[i] = (uint32_t) scaled_rand;
                         break;
                     case 2:
-                        if(type.is_signed) ((int16_t *)data)[i] = (int16_t) scaled_rand;
-                        else ((uint16_t *)data)[i] = (uint16_t) scaled_rand;
+                        // 16 bits dot product saturates very fast even with moderate length vectors
+                    	// we produce here only 4 bits input range
+                        if(type.is_signed) ((int16_t *)data)[i] = (int16_t)((int16_t) scaled_rand % 16);
+                        else ((uint16_t *)data)[i] = (uint16_t) (int16_t)((int16_t) scaled_rand % 16);
                         break;
                     case 1:
                         if(type.is_signed) ((int8_t *)data)[i] = (int8_t) scaled_rand;

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