Enum Cmp 

pub enum Cmp {
    Slt,
    Sle,
    Sgt,
    Sge,
    Eq,
    Ne,
    O,
    Uo,
    Ult,
    Ule,
    Ugt,
    Uge,
}

QBE comparison operations used in conditional instructions.

The result of a comparison is 1 if the condition is true, and 0 if false.

Examples

use qbe::{Cmp, Instr, Type, Value};

// Compare if %a is less than %b (signed comparison)
let slt_instr = Instr::Cmp(
    Type::Word,
    Cmp::Slt,
    Value::Temporary("a".to_string()),
    Value::Temporary("b".to_string()),
);

// Check if two values are equal
let eq_instr = Instr::Cmp(
    Type::Word,
    Cmp::Eq,
    Value::Temporary("x".to_string()),
    Value::Const(0),
);

Variants

Slt

Returns 1 if first value is less than second, respecting signedness

Sle

Returns 1 if first value is less than or equal to second, respecting signedness

Sgt

Returns 1 if first value is greater than second, respecting signedness

Sge

Returns 1 if first value is greater than or equal to second, respecting signedness

Eq

Returns 1 if values are equal

Ne

Returns 1 if values are not equal

O

Returns 1 if both operands are not NaN (ordered comparison)

Uo

Returns 1 if at least one operand is NaN (unordered comparison)

Ult

Returns 1 if first value is less than second, unsigned comparison

Ule

Returns 1 if first value is less than or equal to second, unsigned comparison

Ugt

Returns 1 if first value is greater than second, unsigned comparison

Uge

Returns 1 if first value is greater than or equal to second, unsigned comparison

Trait Implementations

impl Clone for Cmp

fn clone(&self) -> Cmp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Cmp

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

Formats the value using the given formatter.

impl Hash for Cmp

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Cmp

fn cmp(&self, other: &Cmp) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Cmp

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Cmp

fn partial_cmp(&self, other: &Cmp) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Cmp

impl Eq for Cmp

impl StructuralPartialEq for Cmp