Enum Reading 

pub enum Reading {
    Signed,
    Unsigned,
}

Which reading of its operands the test the count came from took.

It matters to anybody widening the value a symbolic count is built out of. The count is the distance to the limit of the exit test, the limit is a value of the counter’s own type, and what that value means is the reading its test took. A limit past the middle of a thirty two bit type is a large number to an unsigned test and a negative one to a signed test, and a consumer that sign extends what an unsigned test compared has turned a loop over three billion elements into a loop that runs no times.

Variants

Signed

The test read its operands as signed, so widening the count means sign extending it.

Unsigned

The test read them as unsigned, so widening the count means zero extending it.

Trait Implementations

impl Clone for Reading

fn clone(&self) -> Reading

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Reading

impl Debug for Reading

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Reading

impl PartialEq for Reading

fn eq(&self, other: &Reading) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Reading