[−][src]Trait rustc_apfloat::ieee::Semantics
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Represents floating point arithmetic semantics.
Associated Constants
const BITS: usize
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Total number of bits in the in-memory format.
const PRECISION: usize
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Number of bits in the significand. This includes the integer bit.
const MAX_EXP: ExpInt
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The largest E such that 2E is representable; this matches the definition of IEEE 754.
const MIN_EXP: ExpInt
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The smallest E such that 2E is a normalized number; this matches the definition of IEEE 754.
const QNAN_BIT: usize
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The significand bit that marks NaN as quiet.
const QNAN_SIGNIFICAND: u128
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The significand bitpattern to mark a NaN as quiet. NOTE: for X87DoubleExtended we need to set two bits instead of 2.
Provided Methods
fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn to_bits(x: IeeeFloat<Self>) -> u128
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Implementors
impl Semantics for DoubleS
[src]
impl Semantics for DoubleS
const BITS: usize
[src]
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const PRECISION: usize
[src]
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const MAX_EXP: ExpInt
[src]
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const MIN_EXP: ExpInt
[src]
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const QNAN_BIT: usize
[src]
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const QNAN_SIGNIFICAND: u128
[src]
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fn from_bits(bits: u128) -> IeeeFloat<Self>
[src]
fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn to_bits(x: IeeeFloat<Self>) -> u128
[src]
fn to_bits(x: IeeeFloat<Self>) -> u128
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impl Semantics for HalfS
[src]
impl Semantics for HalfS
const BITS: usize
[src]
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const PRECISION: usize
[src]
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const MAX_EXP: ExpInt
[src]
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const MIN_EXP: ExpInt
[src]
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const QNAN_BIT: usize
[src]
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const QNAN_SIGNIFICAND: u128
[src]
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fn from_bits(bits: u128) -> IeeeFloat<Self>
[src]
fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn to_bits(x: IeeeFloat<Self>) -> u128
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fn to_bits(x: IeeeFloat<Self>) -> u128
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impl Semantics for QuadS
[src]
impl Semantics for QuadS
const BITS: usize
[src]
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const PRECISION: usize
[src]
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const MAX_EXP: ExpInt
[src]
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const MIN_EXP: ExpInt
[src]
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const QNAN_BIT: usize
[src]
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const QNAN_SIGNIFICAND: u128
[src]
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fn from_bits(bits: u128) -> IeeeFloat<Self>
[src]
fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn to_bits(x: IeeeFloat<Self>) -> u128
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fn to_bits(x: IeeeFloat<Self>) -> u128
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impl Semantics for SingleS
[src]
impl Semantics for SingleS
const BITS: usize
[src]
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const PRECISION: usize
[src]
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const MAX_EXP: ExpInt
[src]
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const MIN_EXP: ExpInt
[src]
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const QNAN_BIT: usize
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const QNAN_SIGNIFICAND: u128
[src]
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fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn to_bits(x: IeeeFloat<Self>) -> u128
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fn to_bits(x: IeeeFloat<Self>) -> u128
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impl Semantics for X87DoubleExtendedS
[src]
impl Semantics for X87DoubleExtendedS
const BITS: usize
[src]
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const PRECISION: usize
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const MAX_EXP: ExpInt
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const QNAN_SIGNIFICAND: u128
[src]
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For x87 extended precision, we want to make a NaN, not a pseudo-NaN. Maybe we should expose the ability to make pseudo-NaNs?
fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn from_bits(bits: u128) -> IeeeFloat<Self>
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Integer bit is explicit in this format. Intel hardware (387 and later) does not support these bit patterns: exponent = all 1's, integer bit 0, significand 0 ("pseudoinfinity") exponent = all 1's, integer bit 0, significand nonzero ("pseudoNaN") exponent = 0, integer bit 1 ("pseudodenormal") exponent!=0 nor all 1's, integer bit 0 ("unnormal") At the moment, the first two are treated as NaNs, the second two as Normal.
fn to_bits(x: IeeeFloat<Self>) -> u128
[src]
fn to_bits(x: IeeeFloat<Self>) -> u128
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const MIN_EXP: ExpInt
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const QNAN_BIT: usize
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impl<F: Float> Semantics for FallbackExtendedS<F>
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impl<F: Float> Semantics for FallbackExtendedS<F>
const BITS: usize
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const PRECISION: usize
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const MAX_EXP: ExpInt
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const MIN_EXP: ExpInt
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const QNAN_BIT: usize
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const QNAN_SIGNIFICAND: u128
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fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn to_bits(x: IeeeFloat<Self>) -> u128
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fn to_bits(x: IeeeFloat<Self>) -> u128
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impl<F: Float> Semantics for FallbackS<F>
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impl<F: Float> Semantics for FallbackS<F>
const BITS: usize
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const PRECISION: usize
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const MAX_EXP: ExpInt
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const MIN_EXP: ExpInt
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const QNAN_BIT: usize
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const QNAN_SIGNIFICAND: u128
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fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn from_bits(bits: u128) -> IeeeFloat<Self>
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fn to_bits(x: IeeeFloat<Self>) -> u128
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fn to_bits(x: IeeeFloat<Self>) -> u128
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