diff options
Diffstat (limited to 'host/lib/usrp/tune_helper.cpp')
| -rw-r--r-- | host/lib/usrp/tune_helper.cpp | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/host/lib/usrp/tune_helper.cpp b/host/lib/usrp/tune_helper.cpp index fa40a8a26..eccee7f4b 100644 --- a/host/lib/usrp/tune_helper.cpp +++ b/host/lib/usrp/tune_helper.cpp @@ -20,7 +20,6 @@ #include <uhd/usrp/dsp_props.hpp> #include <uhd/usrp/dboard_iface.hpp> //unit_t #include <uhd/utils/algorithm.hpp> -#include <boost/math/special_functions/sign.hpp> #include <cmath> using namespace uhd; @@ -37,7 +36,6 @@ static tune_result_t tune_xx_subdev_and_dsp( wax::obj subdev_freq_proxy = subdev[SUBDEV_PROP_FREQ]; std::string freq_name = dsp[DSP_PROP_FREQ_SHIFT_NAMES].as<prop_names_t>().at(chan); wax::obj dsp_freq_proxy = dsp[named_prop_t(DSP_PROP_FREQ_SHIFT, freq_name)]; - double dsp_sample_rate = dsp[DSP_PROP_CODEC_RATE].as<double>(); //------------------------------------------------------------------ //-- calculate the LO offset, only used with automatic policy @@ -73,10 +71,7 @@ static tune_result_t tune_xx_subdev_and_dsp( //------------------------------------------------------------------ //-- calculate the dsp freq, only used with automatic policy //------------------------------------------------------------------ - double delta_freq = std::fmod(tune_request.target_freq - actual_inter_freq, dsp_sample_rate); - bool outside_of_nyquist = std::abs(delta_freq) > dsp_sample_rate/2.0; - double target_dsp_freq = (outside_of_nyquist)? - boost::math::sign(delta_freq)*dsp_sample_rate - delta_freq : -delta_freq; + double target_dsp_freq = actual_inter_freq - tune_request.target_freq; //invert the sign on the dsp freq given the following conditions if (unit == dboard_iface::UNIT_TX) target_dsp_freq *= -1.0; |