diff options
| -rw-r--r-- | gr-qtgui/lib/freqcontrolpanel.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gr-qtgui/lib/freqcontrolpanel.cc b/gr-qtgui/lib/freqcontrolpanel.cc index 269b88a23d..5840989949 100644 --- a/gr-qtgui/lib/freqcontrolpanel.cc +++ b/gr-qtgui/lib/freqcontrolpanel.cc @@ -21,6 +21,7 @@ */ #include <gnuradio/qtgui/freqcontrolpanel.h> +#include <cmath> FreqControlPanel::FreqControlPanel(FreqDisplayForm *form) : QVBoxLayout(), @@ -245,7 +246,7 @@ FreqControlPanel::notifyAvgSlider(int val) void FreqControlPanel::toggleFFTSize(int val) { - int index = static_cast<int>(logf(static_cast<float>(val))/logf(2.0f)) - 5; + int index = static_cast<int>(round(logf(static_cast<float>(val))/logf(2.0f))) - 5; d_fft_size_combo->setCurrentIndex(index); } |