use_quantum_basic_usage/
basic_usage.rs

1use use_quantum::{
2    MatterWave, Photon, QuantumNumbers, REDUCED_PLANCK_CONSTANT, RYDBERG_ENERGY_EV,
3    hydrogen_energy_level_ev, minimum_position_uncertainty,
4};
5
6fn approx_eq(left: f64, right: f64) -> bool {
7    let scale = left.abs().max(right.abs()).max(1.0);
8    (left - right).abs() <= 1.0e-12 * scale
9}
10
11fn main() -> Result<(), &'static str> {
12    let photon = Photon::from_wavelength(500.0e-9).ok_or("expected valid photon wavelength")?;
13    let matter_wave =
14        MatterWave::from_mass_velocity(2.0, 3.0).ok_or("expected valid matter wave")?;
15    let quantum_numbers =
16        QuantumNumbers::new(2, 1, 0, 1).ok_or("expected valid quantum numbers")?;
17
18    assert!(photon.energy_ev().ok_or("expected photon energy in eV")? > 0.0);
19    assert!(
20        matter_wave
21            .wavelength()
22            .ok_or("expected matter wavelength")?
23            > 0.0
24    );
25    assert!(approx_eq(quantum_numbers.spin_projection(), 0.5));
26    assert!(approx_eq(
27        hydrogen_energy_level_ev(1).ok_or("expected hydrogen energy level")?,
28        -RYDBERG_ENERGY_EV,
29    ));
30    assert!(approx_eq(
31        minimum_position_uncertainty(REDUCED_PLANCK_CONSTANT)
32            .ok_or("expected minimum uncertainty")?,
33        0.5,
34    ));
35
36    Ok(())
37}
use_quantum_basic_usage/basic_usage.rs

use_quantum_basic_usage/
basic_usage.rs
