Struct ControlRegister

pub struct ControlRegister(/* private fields */);

Available on AArch64 only.

FPCR: Influences floating-point instruction execution.

Implementations

impl ControlRegister

pub fn alternative_half_precision_format(&self) -> bool

AHP: Use an alternative format for half-precision floats when converting to/from other formats. Otherwise, use the IEEE half-precision format.

pub fn default_nan(&self) -> bool

DN: Always use the default encoding for NaN results. Otherwise, use the encoding from an input operand.

pub fn flush_to_zero(&self) -> bool

FZ: When a result would be denormal, yield zero instead. Otherwise, use the IEEE 754 behavior.

pub fn rounding_mode(&self) -> RoundingMode

RMode: The IEEE 754 rounding mode in use.

pub fn flush_to_zero_half_precision(&self) -> bool

FZ16: Counterpart to flush_to_zero for half-precision calculations.

Requires FEAT_FP16.

pub fn trapped_exceptions(&self) -> Exceptions

For each type of floating-point exception, defines whether the error will be trapped. If false, the corresponding flag in StatusRegister::exceptions will be set instead.

pub fn set_alternative_half_precision_format(&mut self, value: bool)

AHP: Use an alternative format for half-precision floats when converting to/from other formats. Otherwise, use the IEEE half-precision format.

pub fn with_alternative_half_precision_format(&mut self, value: bool) -> Self

AHP: Use an alternative format for half-precision floats when converting to/from other formats. Otherwise, use the IEEE half-precision format.

pub fn set_default_nan(&mut self, value: bool)

DN: Always use the default encoding for NaN results. Otherwise, use the encoding from an input operand.

pub fn with_default_nan(&mut self, value: bool) -> Self

DN: Always use the default encoding for NaN results. Otherwise, use the encoding from an input operand.

pub fn set_flush_to_zero(&mut self, value: bool)

FZ: When a result would be denormal, yield zero instead. Otherwise, use the IEEE 754 behavior.

pub fn with_flush_to_zero(&mut self, value: bool) -> Self

FZ: When a result would be denormal, yield zero instead. Otherwise, use the IEEE 754 behavior.

pub fn set_rounding_mode(&mut self, value: RoundingMode)

RMode: The IEEE 754 rounding mode in use.

pub fn with_rounding_mode(&self, value: RoundingMode) -> Self

RMode: The IEEE 754 rounding mode in use.

pub fn set_flush_to_zero_half_precision(&mut self, value: bool)

FZ16: Counterpart to flush_to_zero for half-precision calculations.

Requires FEAT_FP16.

pub fn with_flush_to_zero_half_precision(&mut self, value: bool) -> Self

FZ16: Counterpart to flush_to_zero for half-precision calculations.

Requires FEAT_FP16.

pub fn set_trapped_exceptions(&mut self, value: Exceptions)

For each type of floating-point exception, defines whether the error will be trapped. If false, the corresponding flag in StatusRegister::exceptions will be set instead.

pub fn with_trapped_exceptions(&self, value: Exceptions) -> Self

For each type of floating-point exception, defines whether the error will be trapped. If false, the corresponding flag in StatusRegister::exceptions will be set instead.

impl ControlRegister

pub fn get() -> Self

Retrieve the current value of this register

pub fn set(value: Self)

Update the register to the given value.

Trait Implementations

impl Bitfield<u64> for ControlRegister

fn new(value: T) -> Self

Construct a new bitfield type from its underlying representation

fn value(self) -> T

Unwrap the bitfield into its underlying representation

impl Clone for ControlRegister

fn clone(&self) -> ControlRegister

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ControlRegister

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

Formats the value using the given formatter.

impl Default for ControlRegister

fn default() -> ControlRegister

Returns the “default value” for a type.

impl From<ControlRegister> for u64

fn from(val: ControlRegister) -> Self

Converts to this type from the input type.

impl From<u64> for ControlRegister

fn from(val: u64) -> Self

Converts to this type from the input type.

impl PartialEq for ControlRegister

fn eq(&self, other: &ControlRegister) -> 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 Copy for ControlRegister

impl Eq for ControlRegister

impl StructuralPartialEq for ControlRegister