Struct frounding::RoundingState

pub struct RoundingState {
    // some fields omitted
}

RoundingState Keep track of the current rounding mode of both the SSE and the x87 FPU units.

Methods

impl RoundingState

fn new() -> Self

Create new RoundingState struct and fill it with the current status of control regiters. When going out of scope the initial rounding mode is set.

fn current_rounding(&self) -> (RoundingMode, RoundingMode)

Return the current rounding mode of both SSE and FPU.

fn sse_rounding(&self) -> RoundingMode

Return the current rounding mode of the SSE unit.

fn fpu_rounding(&self) -> RoundingMode

Return the current rounding mode of x87 FPU unit.

fn upward(&mut self)

Set the rounding mode toward +infinity for both SSE and x87 FPU.

fn sse_upward(&mut self)

Set the rounding mode of the SSE toward +infinity.

fn fpu_upward(&mut self)

Set the rounding mode of the FPU toward +infinity.

fn downward(&mut self)

Set the rounding mode toward -infinity for both SSE and x87 FPU.

fn sse_downward(&mut self)

Set the rounding mode of the SSE toward -infinity.

fn fpu_downward(&mut self)

Set the rounding mode of the FPU toward -infinity.

fn to_nearest(&mut self)

Set the rounding mode to nearest for both SSE and x87 FPU.

fn sse_to_nearest(&mut self)

Set the rounding mode of the SSE to nearest

fn fpu_to_nearest(&mut self)

Set the rounding mode of FPU to nearest

fn to_zero(&mut self)

Set the rounding mode toward zero (aka truncate) for both SSE and x87 FPU.

fn sse_to_zero(&mut self)

Set the rounding mode of SSE toward zero (aka truncate)

fn fpu_to_zero(&mut self)

Set the rounding mode of FPU toward zero (aka truncate)

Trait Implementations

impl Clone for RoundingState

fn clone(&self) -> RoundingState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RoundingState

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Drop for RoundingState

Drop trait is implimented as when going out of scope the default status of the control registers. is retrived.

fn drop(&mut self)

A method called when the value goes out of scope.