Trait rustc_apfloat::ieee::Semantics
[−]
[src]
pub trait Semantics: Sized { const BITS: usize; const PRECISION: usize; const MAX_EXP: ExpInt; const MIN_EXP: ExpInt; const QNAN_BIT: usize; const QNAN_SIGNIFICAND: u128; fn from_bits(bits: u128) -> IeeeFloat<Self> { ... } fn to_bits(x: IeeeFloat<Self>) -> u128 { ... } }
🔬 This is a nightly-only experimental API. (rustc_private
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Represents floating point arithmetic semantics.
Associated Constants
const BITS: usize
🔬 This is a nightly-only experimental API. (rustc_private
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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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MIN_EXP: ExpInt = -<Self>::MAX_EXP + 1
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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QNAN_BIT: usize = <Self>::PRECISION - 2
The significand bit that marks NaN as quiet.
const QNAN_SIGNIFICAND: u128
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QNAN_SIGNIFICAND: u128 = 1 << <Self>::QNAN_BIT
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>
🔬 This is a nightly-only experimental API. (rustc_private
)
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fn to_bits(x: IeeeFloat<Self>) -> u128
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
Implementors
impl Semantics for HalfS
impl Semantics for SingleS
impl Semantics for DoubleS
impl Semantics for QuadS
impl Semantics for X87DoubleExtendedS
impl<F: Float> Semantics for FallbackS<F>
impl<F: Float> Semantics for FallbackExtendedS<F>