Enum Variadic 

pub enum Variadic {
    SameAsFixed,
    AlwaysMemory,
    BothBanks,
}

What a variadic argument does differently.

Variants

SameAsFixed

Nothing. A variadic argument is classified the same way a fixed one is.

AlwaysMemory

Every variadic argument is in the argument area, whatever registers are left.

Darwin arm64, and the divergence that makes it a separate ABI rather than AAPCS64 with notes, per spec/cross-compile/06-abis.md section 6.3. It is also the reason a variadic call there is ABI-incompatible with a non-variadic one, so calling an unprototyped function works until the day it does not.

BothBanks

A floating point argument travels in both its vector register and the corresponding general purpose one.

Windows x64, because the callee of a variadic function does not know which bank to read.

Trait Implementations

impl Clone for Variadic

fn clone(&self) -> Variadic

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Variadic

impl Debug for Variadic

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

Formats the value using the given formatter.

impl Eq for Variadic

impl PartialEq for Variadic

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Variadic