Enum cranelift_codegen_shared::condcodes::FloatCC

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pub enum FloatCC {
    Ordered,
    Unordered,
    Equal,
    NotEqual,
    OrderedNotEqual,
    UnorderedOrEqual,
    LessThan,
    LessThanOrEqual,
    GreaterThan,
    GreaterThanOrEqual,
    UnorderedOrLessThan,
    UnorderedOrLessThanOrEqual,
    UnorderedOrGreaterThan,
    UnorderedOrGreaterThanOrEqual,
}

[−] Expand description

Condition code for comparing floating point numbers.

This condition code is used by the fcmp instruction to compare floating point values. Two IEEE floating point values relate in exactly one of four ways:

1. UN - unordered when either value is NaN.
2. EQ - equal numerical value.
3. LT - x is less than y.
4. GT - x is greater than y.

Note that 0.0 and -0.0 relate as EQ because they both represent the number 0.

The condition codes described here are used to produce a single boolean value from the comparison. The 14 condition codes here cover every possible combination of the relation above except the impossible !UN & !EQ & !LT & !GT and the always true UN | EQ | LT | GT.

Variants

Ordered

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EQ | LT | GT

Unordered

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UN

Equal

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EQ

NotEqual

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The C ‘!=’ operator is the inverse of ‘==’: NotEqual. UN | LT | GT

OrderedNotEqual

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LT | GT

UnorderedOrEqual

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UN | EQ

LessThan

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LT

LessThanOrEqual

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LT | EQ

GreaterThan

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GT

GreaterThanOrEqual

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GT | EQ

UnorderedOrLessThan

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UN | LT

UnorderedOrLessThanOrEqual

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UN | LT | EQ

UnorderedOrGreaterThan

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UN | GT

UnorderedOrGreaterThanOrEqual

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UN | GT | EQ

Trait Implementations

impl Clone for FloatCC[+]

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fn clone(&self) -> FloatCC[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl CondCode for FloatCC[+]

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fn inverse(self) -> Self[−]

Get the inverse condition code of self.

fn reverse(self) -> Self[−]

Get the reversed condition code for self.

impl Copy for FloatCC

impl Debug for FloatCC[+]

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

Formats the value using the given formatter.

impl Display for FloatCC[+]

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

Formats the value using the given formatter.

impl Eq for FloatCC

impl FromStr for FloatCC[+]

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type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>[−]

Parses a string s to return a value of this type.

impl Hash for FloatCC[+]

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl PartialEq<FloatCC> for FloatCC[+]

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fn eq(&self, other: &FloatCC) -> bool[−]

This method tests for self and other values to be equal, and is used by ==.

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#[must_use]pub fn ne(&self, other: &Rhs) -> bool[−]

This method tests for !=.

impl StructuralEq for FloatCC

impl StructuralPartialEq for FloatCC