OSQuantityVector& OSQuantityVector::operator-=(Quantity rQuantity) {
if (isTemperature() && rQuantity.isTemperature()) {
if (isAbsolute() && rQuantity.isAbsolute()) {
// units must be the same, check that exponent on this is 1
std::vector<std::string> bus = m_units.baseUnits();
assert(bus.size() == 1);
if (m_units.baseUnitExponent(bus[0]) == 1) {
setAsRelative();
rQuantity.setAsRelative();
}
} else if (!isAbsolute() && rQuantity.isAbsolute()) {
setAsAbsolute();
} else if (isAbsolute() && !rQuantity.isAbsolute()) {
rQuantity.setAsAbsolute();
}
}
if (units() != rQuantity.units()) {
LOG_AND_THROW("Cannot subtract OSQuantityVector and Quantity with different units (" << units()
<< " and " << rQuantity.units() << ").");
}
if (scale() != rQuantity.scale()) {
rQuantity.setScale(scale().exponent);
}
double value = rQuantity.value();
for (unsigned i = 0, n = size(); i < n; ++i) {
m_values[i] -= value;
}
return *this;
}
OSQuantityVector& OSQuantityVector::operator-=(OSQuantityVector rVector) {
unsigned n = size();
if (this == &rVector) {
clear();
resize(n,0.0);
return *this;
}
if (isTemperature() && rVector.isTemperature()) {
if (isAbsolute() && rVector.isAbsolute()) {
// units must be the same, check that exponent on this is 1
std::vector<std::string> bus = m_units.baseUnits();
assert(bus.size() == 1);
if (m_units.baseUnitExponent(bus[0]) == 1) {
setAsRelative();
rVector.setAsRelative();
}
} else if (!isAbsolute() && rVector.isAbsolute()) {
setAsAbsolute();
} else if (isAbsolute() && !rVector.isAbsolute()) {
rVector.setAsAbsolute();
}
}
if (units() != rVector.units()) {
LOG_AND_THROW("Cannot subtract OSQuantityVectors with different units (" << units()
<< " and " << rVector.units() << ").");
}
if (rVector.size() != n) {
LOG_AND_THROW("Cannot subtract vectors of different sizes.");
}
if (scale() != rVector.scale()) {
rVector.setScale(scale().exponent);
}
DoubleVector rValues = rVector.values();
for (unsigned i = 0; i < n; ++i) {
m_values[i] -= rValues[i];
}
return *this;
}
Quantity& Quantity::operator-=(const Quantity& temp) {
if (this == &temp) {
m_value = 0.0;
return *this;
}
// copy input reference so we can change its properties
Quantity rQuantity(temp);
if (isTemperature() && rQuantity.isTemperature()) {
if (isAbsolute() && rQuantity.isAbsolute()) {
// units must be the same, check that exponent on this is 1
std::vector<std::string> bus = baseUnits();
OS_ASSERT(bus.size() == 1);
if (baseUnitExponent(bus[0]) == 1) {
setAsRelative();
rQuantity.setAsRelative();
}
} else if (!isAbsolute() && rQuantity.isAbsolute()) {
setAsAbsolute();
} else if (isAbsolute() && !rQuantity.isAbsolute()) {
rQuantity.setAsAbsolute();
}
}
if (m_units != rQuantity.m_units) {
LOG_AND_THROW("Cannot subtract quantities with different units.");
}
if (scale() != rQuantity.scale()) {
Quantity wRQuantity(rQuantity);
wRQuantity.setScale(scale().exponent);
m_value -= wRQuantity.value();
}
else {
m_value -= rQuantity.value();
}
return *this;
}