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COM frequency rounding + testcase

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This commit is contained in:
Klaus Basan
2018-09-30 22:28:37 +02:00
parent b92d336d2a
commit 5dbf4468f2
2 changed files with 29 additions and 7 deletions
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14
src/blackmisc/aviation/comsystem.cpp
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@@ -125,14 +125,14 @@ namespace BlackMisc
{ {
if (frequency.isNull()) { return; } if (frequency.isNull()) { return; }
const double channelSpacingKHz = CComSystem::channelSpacingToFrequencyKHz(channelSpacing); const double channelSpacingKHz = CComSystem::channelSpacingToFrequencyKHz(channelSpacing);
const double f = frequency.valueRounded(CFrequencyUnit::kHz(), 0); const double fKHz = frequency.valueRounded(CFrequencyUnit::kHz(), 0);
const quint32 d = static_cast<quint32>(f / channelSpacingKHz); const int dDown = static_cast<int>(fKHz / channelSpacingKHz);
const double fDownKHz = dDown * channelSpacingKHz;
const double fUpKHz = (dDown + 1) * channelSpacingKHz;
const bool down = qAbs(fKHz - fDownKHz) < qAbs(fUpKHz - fKHz); // which is the closest value
const double fMHz(CMathUtils::round((down ? fDownKHz : fUpKHz) / 1000.0, 3));
frequency.switchUnit(CFrequencyUnit::MHz()); frequency.switchUnit(CFrequencyUnit::MHz());
const double f0 = frequency.valueRounded(CFrequencyUnit::MHz(), 3); frequency.setCurrentUnitValue(fMHz);
const double f1 = CMathUtils::round(d * (channelSpacingKHz / 1000.0), 3);
const double f2 = CMathUtils::round((d + 1) * (channelSpacingKHz / 1000.0), 3);
const bool down = qAbs(f1 - f0) < qAbs(f2 - f0); // which is the closest value
frequency.setCurrentUnitValue(down ? f1 : f2);
} }
bool CComSystem::isWithinChannelSpacing(const CFrequency &setFrequency, const CFrequency &compareFrequency, CComSystem::ChannelSpacing channelSpacing) bool CComSystem::isWithinChannelSpacing(const CFrequency &setFrequency, const CFrequency &compareFrequency, CComSystem::ChannelSpacing channelSpacing)

22
tests/blackmisc/aviation/testaviation/testaviation.cpp
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@@ -59,6 +59,9 @@ namespace BlackMiscTest
//! COM and NAV units //! COM and NAV units
void comAndNav(); void comAndNav();
//! COM frequency rounding
void comFrequencyRounding();
//! Transponder //! Transponder
void transponder(); void transponder();
@@ -108,6 +111,25 @@ namespace BlackMiscTest
QVERIFY2(!CNavSystem::isValidCivilNavigationFrequency(CFrequency(200.0, CFrequencyUnit::MHz())), "Expect invalid nav frequency"); QVERIFY2(!CNavSystem::isValidCivilNavigationFrequency(CFrequency(200.0, CFrequencyUnit::MHz())), "Expect invalid nav frequency");
} }
void CTestAviation::comFrequencyRounding()
{
const CFrequency f1 = CFrequency(122.8, CFrequencyUnit::MHz());
const CFrequency f2 = CFrequency(122.795, CFrequencyUnit::MHz());
const CFrequency f3 = CFrequency(122.805, CFrequencyUnit::MHz());
QVERIFY2(f1 == f1, "Ups, how can this fail");
QVERIFY2(f1 != f2, "Ups, how can this fail");
QVERIFY2(f1 != f3, "Ups, how can this fail");
CFrequency up(f2);
CComSystem::roundToChannelSpacing(up, CComSystem::ChannelSpacing25KHz);
QVERIFY2(up == f1, "Expect rounding up");
CFrequency down(f3);
CComSystem::roundToChannelSpacing(down, CComSystem::ChannelSpacing25KHz);
QVERIFY2(down == f1, "Expect rounding up");
}
void CTestAviation::transponder() void CTestAviation::transponder()
{ {
CTransponder t1 = CTransponder::getStandardTransponder(7000, CTransponder::StateStandby); CTransponder t1 = CTransponder::getStandardTransponder(7000, CTransponder::StateStandby);