Struct DenormalGuard 

pub struct DenormalGuard { /* private fields */ }

RAII guard that enables denormal-flush mode on construction and restores the prior FPU control word on drop. See module docs.

Implementations

impl DenormalGuard

pub fn new() -> Self

Set FTZ/DAZ (x86_64) or FZ (aarch64). On other targets this is a no-op and the guard is a zero-sized stub.

Implemented via inline asm rather than the _mm_getcsr / _mm_setcsr intrinsics: those are deprecated in current stable Rust and the _MM_DENORMALS_ZERO_ON constant isn’t always available alongside them. The two-instruction stmxcsr / ldmxcsr pair is the same machine code the intrinsics emit, just spelled differently in source.

Trait Implementations

impl Default for DenormalGuard

fn default() -> Self

Returns the “default value” for a type.

impl Drop for DenormalGuard

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.