Function x0_always_zero

crates/virtual-machine/tests/vm_registers.rs:4–8

()

#[test]
fn x0_always_zero() {
    let mut regs = Registers::new();
    regs.write_x(0, 42);
    assert_eq!(regs.read_x(0), 0, "x0 must always read as zero");
}

#[test]
fn x_roundtrip() {