Struct x86_64_xsave::fxsave::domain::X87FloatingPointUnitStatusWord

#[repr(transparent)]
pub struct X87FloatingPointUnitStatusWord(_);

See Figure 8-6 in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1, for the layout of the x87 FPU Control Word.

Methods

impl X87FloatingPointUnitStatusWord

pub fn save_after_raising_any_pending_unmasked_floating_point_exceptions(
) -> Self

Reads the control word after raising any pending unmasked floating point exceptions.

Uses the non-AX register form of the FSTSW instruction (ie always writes to memory); see https://github.com/HJLebbink/asm-dude/wiki/FSTSW_FNSTSW.

pub fn save() -> Self

Reads the control word.

Uses the non-AX register form of the FNSTSW instruction (ie always writes to memory); see https://github.com/HJLebbink/asm-dude/wiki/FSTSW_FNSTSW.

pub fn exception_flag_invalid_operation(self) -> bool

Invalid Operation exception flag, IE.

One of the 6 exception flags that can be controlled by the status word.

When set (true), the corresponding x87 FPU floating-point exception occurred.

pub fn exception_flag_denormalized_operand(self) -> bool

Denormalized Operand exception flag, DE.

One of the 6 exception flags that can be controlled by the status word.

When set (true), the corresponding x87 FPU floating-point exception occurred.

pub fn exception_flag_zero_divide(self) -> bool

Zero Divide exception flag, ZE.

One of the 6 exception flags that can be controlled by the status word.

When set (true), the corresponding x87 FPU floating-point exception occurred.

pub fn exception_flag_overflow(self) -> bool

Overflow exception flag, OE.

One of the 6 exception flags that can be controlled by the status word.

When set (true), the corresponding x87 FPU floating-point exception occurred.

pub fn exception_flag_underflow(self) -> bool

Underflow exception flag, UE.

One of the 6 exception flags that can be controlled by the status word.

When set (true), the corresponding x87 FPU floating-point exception occurred.

pub fn exception_flag_precision(self) -> bool

Precision exception flag, EE.

One of the 6 exception flags that can be controlled by the status word.

When set (true), the corresponding x87 FPU floating-point exception occurred.

pub fn stack_fault(self) -> bool

Stack Fault exception flag, SF.

The stack fault flag indicates that stack overflow or stack underflow has occurred with data in the x87 FPU data register stack. The x87 FPU explicitly sets the SF flag when it detects a stack overflow or underflow condition, but it does not explicitly clear the flag when it detects an invalid-arithmetic-operand condition. When this flag is set, the condition code flag C1 indicates the nature of the fault: overflow (C1 = 1) and underflow (C1 = 0).

The SF flag is a “sticky” flag, meaning that after it is set, the processor does not clear it until it is explicitly instructed to do so (for example, by an FINIT/FNINIT, FCLEX/FNCLEX, or FSAVE/FNSAVE instruction).

pub fn exception_summary_status(self) -> bool

Exception Summary Status, ES.

When set (true), a x87 FPU floating-point exception occurred.

pub fn condition_code_c0(self) -> bool

Condition Code C0.

See Table 8-1 (Condition Code Interpretation) in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1.

pub fn condition_code_c1(self) -> bool

Condition Code C1.

See Table 8-1 (Condition Code Interpretation) in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1.

pub fn condition_code_c2(self) -> bool

Condition Code C2.

See Table 8-1 (Condition Code Interpretation) in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1.

pub fn condition_code_c3(self) -> bool

Condition Code C3.

See Table 8-1 (Condition Code Interpretation) in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1.

pub fn top(self) -> u8

Top of Stack Pointer, TOP.

A pointer to the x87 FPU data register that is currently at the top of the x87 FPU register stack.

This pointer is a binary value from 0 to 7 (A 3-bit (u3) value).

pub fn fpu_busy(self) -> bool

FPU Busy, B, or B-bit.

This is for 8087 compatibility only. It reflects the contents of the ES (self.exception_summary_status()) flag.

Trait Implementations

impl Clone for X87FloatingPointUnitStatusWord

fn clone(&self) -> X87FloatingPointUnitStatusWord

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<X87FloatingPointUnitStatusWord> for X87FloatingPointUnitStatusWord

fn eq(&self, other: &X87FloatingPointUnitStatusWord) -> bool

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

fn ne(&self, other: &X87FloatingPointUnitStatusWord) -> bool

This method tests for !=.

impl PartialOrd<X87FloatingPointUnitStatusWord> for X87FloatingPointUnitStatusWord

fn partial_cmp(
    &self,
    other: &X87FloatingPointUnitStatusWord
) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &X87FloatingPointUnitStatusWord) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &X87FloatingPointUnitStatusWord) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &X87FloatingPointUnitStatusWord) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &X87FloatingPointUnitStatusWord) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for X87FloatingPointUnitStatusWord

impl Ord for X87FloatingPointUnitStatusWord

fn cmp(&self, other: &X87FloatingPointUnitStatusWord) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl Copy for X87FloatingPointUnitStatusWord

impl Default for X87FloatingPointUnitStatusWord

fn default() -> X87FloatingPointUnitStatusWord

Returns the "default value" for a type.

impl Debug for X87FloatingPointUnitStatusWord

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

Formats the value using the given formatter.

impl Hash for X87FloatingPointUnitStatusWord

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].