Struct FpuGuard 

pub struct FpuGuard { /* private fields */ }

RAII guard that protects a computation from dangerous FPU settings

On creation:

1. Triggers one-time FPU check and warning (if not already done)
2. If FZ or DAZ is enabled, disables them temporarily

On drop:

• Restores the original FPU state

Example

{
    let _guard = FpuGuard::new_protect_computation();
    // Computation here - FZ/DAZ are disabled
    perform_svd_computation();
} // Original FPU state is restored here

Performance

The overhead is negligible (a few CPU cycles for stmxcsr/ldmxcsr).

Implementations

impl FpuGuard

pub fn new_protect_computation() -> Self

Create a new guard that protects computation from FZ/DAZ

• Triggers one-time warning if dangerous FPU settings are detected
• Temporarily disables FZ/DAZ if they are enabled
• Restores original state when dropped

pub fn was_modified(&self) -> bool

Check if the guard needed to modify FPU state

Trait Implementations

impl Drop for FpuGuard

fn drop(&mut self)

Executes the destructor for this type.