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Add 8.33 kHz spacing helper methods

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Related to #186
This commit is contained in:
Lars Toenning
2023-02-05 11:26:15 +01:00
parent b3e5539ec2
commit 5724d286d0
2 changed files with 20 additions and 0 deletions
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13
src/blackmisc/aviation/comsystem.cpp
View File

@@ -181,6 +181,19 @@ namespace BlackMisc::Aviation
}
}
bool CComSystem::isExclusiveWithin8_33kHzChannel(const PhysicalQuantities::CFrequency &freq)
{
const int freqKHz = freq.value(CFrequencyUnit::kHz());
if (freqKHz < 118000 || freqKHz >= 137000 || !isValid8_33kHzChannel(freqKHz)) { return false; }
return !isWithin25kHzChannel(freq);
}
bool CComSystem::isWithin25kHzChannel(const PhysicalQuantities::CFrequency &freq)
{
const int end = static_cast<int>(freq.value(CFrequencyUnit::kHz())) % 100;
return end == 0 || end == 25 || end == 50 || end == 75;
}
bool CComSystem::isWithinChannelSpacing(const CFrequency &setFrequency, const CFrequency &compareFrequency, CComSystem::ChannelSpacing channelSpacing)
{
if (setFrequency.isNull() || compareFrequency.isNull()) { return false; }

7
src/blackmisc/aviation/comsystem.h
View File

@@ -148,6 +148,13 @@ namespace BlackMisc::Aviation
//! Round passed frequency in kHz to 8.33 frequency spacing
static int round8_33kHzChannel(int fKHz);
//! Is frequency a "new" 8.33 kHz frequency and not within 25 kHz spacing
//! E.g. returns false for 122.825 but true for 118.305
static bool isExclusiveWithin8_33kHzChannel(const PhysicalQuantities::CFrequency &freq);
//! Is frequency within 25 kHz frequency spacing
static bool isWithin25kHzChannel(const PhysicalQuantities::CFrequency &freq);
//! Parses almost any shitty string to a valid COM frequency
static PhysicalQuantities::CFrequency parseComFrequency(const QString &input, PhysicalQuantities::CPqString::SeparatorMode sep);