Operators relating length, area and volume. More...

Functions
template<typename R1 , typename P1 , typename R2 , typename P2 >
constexpr auto	quanta::spatial::operator* (const quantity< meter_unit, R1, P1 > &lhs, const quantity< meter_unit, R2, P2 > &rhs)
	length x length = area.

template<typename R1 , typename P1 , typename R2 , typename P2 >
constexpr auto	quanta::spatial::operator* (const quantity< meter_unit, R1, P1 > &lhs, const quantity< square_meter_unit, R2, P2 > &rhs)
	length x area = volume.

template<typename R1 , typename P1 , typename R2 , typename P2 >
constexpr auto	quanta::spatial::operator* (const quantity< square_meter_unit, R1, P1 > &lhs, const quantity< meter_unit, R2, P2 > &rhs)
	area x length = volume.

template<typename R1 , typename P1 , typename R2 , typename P2 >
constexpr auto	quanta::spatial::operator/ (const quantity< square_meter_unit, R1, P1 > &lhs, const quantity< meter_unit, R2, P2 > &rhs)
	area / length = length.

template<typename R1 , typename P1 , typename R2 , typename P2 >
constexpr auto	quanta::spatial::operator/ (const quantity< cubic_meter_unit, R1, P1 > &lhs, const quantity< meter_unit, R2, P2 > &rhs)
	volume / length = area.

template<typename R1 , typename P1 , typename R2 , typename P2 >
constexpr auto	quanta::spatial::operator/ (const quantity< cubic_meter_unit, R1, P1 > &lhs, const quantity< square_meter_unit, R2, P2 > &rhs)
	volume / area = length.

Detailed Description

Operators relating length, area and volume.

Only these combinations are defined; any other product or quotient of quantities of different units (such as area x area or length / area) is ill-formed, as is adding or comparing quantities of different units.

The result precision is the product (or quotient) of the operand precisions and the representation is their common type, so products are exact for integer representations: feet(3) * feet(4) is exactly square_feet(12). Quotients divide the counts, so for integer representations they truncate in the result precision, which may be coarse when the operand precisions differ (square_meters(10) / millimeters(3) has kilometer precision and yields 3 km). Convert the operands to suitable precisions first, or use floating-point representations, for fractional results.

A product whose precision cannot be represented as a std::ratio (such as nanometers x nanometers x nanometers, 10⁻²⁷ m³) is a compile-time error.