uhd: Remove all occurences of boost::math::*round()

Its behaviour is almost identical to std::lround, which we use instead.
The only downside of std::lround is that it always returns a long, which
we don't always need. We thus add some casts for those cases to make the
compiler happy.

3 files changed, 6 insertions, 8 deletions

diff --git a/host/lib/usrp/usrp2/clock_ctrl.cpp b/host/lib/usrp/usrp2/clock_ctrl.cpp
index 324826dc0..8c5801bda 100644
--- a/host/lib/usrp/usrp2/clock_ctrl.cpp
+++ b/host/lib/usrp/usrp2/clock_ctrl.cpp
@@ -13,9 +13,8 @@
 #include <uhd/utils/assert_has.hpp>
 #include <uhd/utils/safe_call.hpp>
 #include <uhdlib/utils/narrow.hpp>
-#include <stdint.h>
-#include <boost/math/special_functions/round.hpp>
-#include <iostream>
+#include <cmath>
+#include <cstdint>
 
 using namespace uhd;
 
@@ -317,7 +316,7 @@ public:
         // offset_ns = 0.34 + (1600 - i_ramp_ua)*1e-4 + ((caps-1)/ramp)*6
         // delay_ns = offset_ns + range_ns * delay / 31
 
-        int delay_val = boost::math::iround(delay / 9.744e-9 * 31);
+        int delay_val = static_cast<int>(std::lround(delay / 9.744e-9 * 31));
 
         if (delay_val == 0) {
             switch (clk_regs.exp) {
diff --git a/host/lib/usrp/usrp2/dboard_iface.cpp b/host/lib/usrp/usrp2/dboard_iface.cpp
index 649019a91..169139ba1 100644
--- a/host/lib/usrp/usrp2/dboard_iface.cpp
+++ b/host/lib/usrp/usrp2/dboard_iface.cpp
@@ -18,7 +18,7 @@
 #include <uhdlib/usrp/cores/gpio_core_200.hpp>
 #include <boost/asio.hpp> //htonl and ntohl
 #include <boost/assign/list_of.hpp>
-#include <boost/math/special_functions/round.hpp>
+#include <cmath>
 
 using namespace uhd;
 using namespace uhd::usrp;
@@ -300,7 +300,7 @@ void usrp2_dboard_iface::write_aux_dac(unit_t unit, aux_dac_t which, double valu
     if (unit == UNIT_BOTH)
         throw uhd::runtime_error("UNIT_BOTH not supported.");
 
-    _dac_regs[unit].data = boost::math::iround(4095 * value / 3.3);
+    _dac_regs[unit].data = static_cast<int>(std::lround(4095 * value / 3.3));
     _dac_regs[unit].cmd  = ad5623_regs_t::CMD_WR_UP_DAC_CHAN_N;
 
     typedef uhd::dict<aux_dac_t, ad5623_regs_t::addr_t> aux_dac_to_addr;
diff --git a/host/lib/usrp/usrp2/usrp2_impl.cpp b/host/lib/usrp/usrp2/usrp2_impl.cpp
index e82a9fa71..7bdce177b 100644
--- a/host/lib/usrp/usrp2/usrp2_impl.cpp
+++ b/host/lib/usrp/usrp2/usrp2_impl.cpp
@@ -18,9 +18,8 @@
 #include <boost/asio.hpp>
 #include <boost/asio/ip/address_v4.hpp>
 #include <boost/format.hpp>
-#include <boost/math/special_functions.hpp>
-#include <functional>
 #include <cmath>
+#include <functional>
 
 using namespace uhd;
 using namespace uhd::usrp;