uhd: use int to round down for gain group

1 files changed, 2 insertions, 5 deletions

diff --git a/host/lib/utils/gain_group.cpp b/host/lib/utils/gain_group.cpp
index 5a14fa96f..1be09dee2 100644
--- a/host/lib/utils/gain_group.cpp
+++ b/host/lib/utils/gain_group.cpp
@@ -21,13 +21,10 @@
 #include <uhd/utils/assert.hpp>
 #include <boost/foreach.hpp>
 #include <boost/bind.hpp>
-#include <boost/math/special_functions/round.hpp>
 #include <algorithm>
 #include <vector>
 #include <iostream>
 
-#define rint(x) boost::math::iround(x)
-
 using namespace uhd;
 
 static const bool verbose = false;
@@ -86,7 +83,7 @@ public:
         BOOST_FOREACH(const gain_fcns_t &fcns, all_fcns){
             const gain_range_t range = fcns.get_range();
             gain_bucket.push_back(
-                max_step*rint(std::clip(gain_left_to_distribute, range.min, range.max)/max_step)
+                max_step*int(std::clip(gain_left_to_distribute, range.min, range.max)/max_step)
             );
             gain_left_to_distribute -= gain_bucket.back();
         }
@@ -109,7 +106,7 @@ public:
         //fill in the largest step sizes first that are less than the remainder
         BOOST_FOREACH(size_t i, indexes_step_size_dec){
             const gain_range_t range = all_fcns.at(i).get_range();
-            float additional_gain = range.step*rint(
+            float additional_gain = range.step*int(
                 std::clip(gain_bucket.at(i) + gain_left_to_distribute, range.min, range.max
             )/range.step) - gain_bucket.at(i);
             gain_bucket.at(i) += additional_gain;