mbalszun/units

MBa Units

A small units library supporting intregral powers of kilogram, meter and seconds and - spearate from that - angles in rad

Here is a simple example, of how this can be used

#include <mba-units/units.hpp>
#include <mba-units/fmt.hpp>

#include <iostream>

using namespace mba;

constexpr units::UPos distance_traveled( units::USpeed v, units::UAccel a, units::UTime t )
{
	return t * v + 0.5 * a * square( t );
	// equivalent:
	// return t * v +  a * t * t / 2.0
}

using namespace mba::units::litterals;

constexpr auto initial_speed = 2.0_mps;
constexpr auto acceleration  = units::UAccel{1.0};

int main()
{

	constexpr auto dist = distance_traveled( initial_speed, acceleration, 3.0_s );
	static_assert( dist == 10.5_m );

	std::cout << "With an initial speed of " << sformat( initial_speed ) << " and an acceleration of "
			  << sformat( acceleration ) << " we will travel " << sformat( dist ) << " in " << sformat( 3.0_s )
			  << std::endl;

/**
 * Prints:
 *
 * With an initial speed of 2m_s^-1 and an acceleration of 1m_s^-2 we will travel 10.5m in 3s
 *
 */

// Compile time error examples
#if 0
	auto wrong_order = distance_traveled( acceleration, initial_speed, 3.0_s );
#endif

#if 0
	auto strange = acceleration + initial_speed;
#endif
}