pub struct Usd(pub f64);Expand description
A struct representing USD (in future, inflation-adjusted) value. That’s it. Just a newtype. But extremely powerful.
Tuple Fields§
§0: f64Implementations§
Methods from Deref<Target = f64>§
pub const RADIX: u32 = 2
pub const BITS: u32 = 64
pub const MANTISSA_DIGITS: u32 = 53
pub const DIGITS: u32 = 15
pub const EPSILON: f64 = 2.2204460492503131e-16_f64
pub const MIN: f64 = -1.7976931348623157e+308_f64
pub const MIN_POSITIVE: f64 = 2.2250738585072014e-308_f64
pub const MAX: f64 = 1.7976931348623157e+308_f64
pub const MIN_EXP: i32 = -1021
pub const MAX_EXP: i32 = 1024
pub const MIN_10_EXP: i32 = -307
pub const MAX_10_EXP: i32 = 308
pub const NAN: f64
pub const INFINITY: f64
pub const NEG_INFINITY: f64
pub const MAX_EXACT_INTEGER: i64
pub const MIN_EXACT_INTEGER: i64
pub const SIGN_MASK: u64 = 0x8000_0000_0000_0000
pub const EXPONENT_MASK: u64 = 0x7ff0_0000_0000_0000
pub const MANTISSA_MASK: u64 = 0x000f_ffff_ffff_ffff
1.62.0 · Sourcepub fn total_cmp(&self, other: &f64) -> Ordering
pub fn total_cmp(&self, other: &f64) -> Ordering
Returns the ordering between self and other.
Unlike the standard partial comparison between floating point numbers,
this comparison always produces an ordering in accordance to
the totalOrder predicate as defined in the IEEE 754 (2008 revision)
floating point standard. The values are ordered in the following sequence:
- negative quiet NaN
- negative signaling NaN
- negative infinity
- negative numbers
- negative subnormal numbers
- negative zero
- positive zero
- positive subnormal numbers
- positive numbers
- positive infinity
- positive signaling NaN
- positive quiet NaN.
The ordering established by this function does not always agree with the
PartialOrd and PartialEq implementations of f64. For example,
they consider negative and positive zero equal, while total_cmp
doesn’t.
The interpretation of the signaling NaN bit follows the definition in the IEEE 754 standard, which may not match the interpretation by some of the older, non-conformant (e.g. MIPS) hardware implementations.
§Example
struct GoodBoy {
name: String,
weight: f64,
}
let mut bois = vec![
GoodBoy { name: "Pucci".to_owned(), weight: 0.1 },
GoodBoy { name: "Woofer".to_owned(), weight: 99.0 },
GoodBoy { name: "Yapper".to_owned(), weight: 10.0 },
GoodBoy { name: "Chonk".to_owned(), weight: f64::INFINITY },
GoodBoy { name: "Abs. Unit".to_owned(), weight: f64::NAN },
GoodBoy { name: "Floaty".to_owned(), weight: -5.0 },
];
bois.sort_by(|a, b| a.weight.total_cmp(&b.weight));
// `f64::NAN` could be positive or negative, which will affect the sort order.
if f64::NAN.is_sign_negative() {
assert!(bois.into_iter().map(|b| b.weight)
.zip([f64::NAN, -5.0, 0.1, 10.0, 99.0, f64::INFINITY].iter())
.all(|(a, b)| a.to_bits() == b.to_bits()))
} else {
assert!(bois.into_iter().map(|b| b.weight)
.zip([-5.0, 0.1, 10.0, 99.0, f64::INFINITY, f64::NAN].iter())
.all(|(a, b)| a.to_bits() == b.to_bits()))
}Trait Implementations§
Source§impl AddAssign for Usd
impl AddAssign for Usd
Source§fn add_assign(&mut self, __rhs: Usd)
fn add_assign(&mut self, __rhs: Usd)
Performs the
+= operation. Read moreimpl Copy for Usd
Source§impl<'de> Deserialize<'de> for Usd
impl<'de> Deserialize<'de> for Usd
Source§fn deserialize<__D>(
__deserializer: __D,
) -> Result<Usd, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<Usd, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
Source§impl<__derive_more_Rhs> DivAssign<__derive_more_Rhs> for Usd
impl<__derive_more_Rhs> DivAssign<__derive_more_Rhs> for Usd
Source§fn div_assign(&mut self, __rhs: __derive_more_Rhs)
fn div_assign(&mut self, __rhs: __derive_more_Rhs)
Performs the
/= operation. Read moreSource§impl<__derive_more_Rhs> MulAssign<__derive_more_Rhs> for Usd
impl<__derive_more_Rhs> MulAssign<__derive_more_Rhs> for Usd
Source§fn mul_assign(&mut self, __rhs: __derive_more_Rhs)
fn mul_assign(&mut self, __rhs: __derive_more_Rhs)
Performs the
*= operation. Read moreSource§impl PartialOrd for Usd
impl PartialOrd for Usd
Source§impl Serialize for Usd
impl Serialize for Usd
Source§fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
Serialize this value into the given Serde serializer. Read more
impl StructuralPartialEq for Usd
Auto Trait Implementations§
impl Freeze for Usd
impl RefUnwindSafe for Usd
impl Send for Usd
impl Sync for Usd
impl Unpin for Usd
impl UnsafeUnpin for Usd
impl UnwindSafe for Usd
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for Twhere
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impl<D> OwoColorize for D
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Set the background color generically. Read more
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fn black(&self) -> FgColorDisplay<'_, Black, Self>
Change the foreground color to black
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fn on_black(&self) -> BgColorDisplay<'_, Black, Self>
Change the background color to black
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fn red(&self) -> FgColorDisplay<'_, Red, Self>
Change the foreground color to red
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fn on_red(&self) -> BgColorDisplay<'_, Red, Self>
Change the background color to red
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fn green(&self) -> FgColorDisplay<'_, Green, Self>
Change the foreground color to green
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fn on_green(&self) -> BgColorDisplay<'_, Green, Self>
Change the background color to green
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fn yellow(&self) -> FgColorDisplay<'_, Yellow, Self>
Change the foreground color to yellow
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Change the background color to yellow
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Change the foreground color to blue
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Change the background color to blue
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Change the foreground color to purple
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Change the foreground color to cyan
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Change the background color to cyan
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Change the foreground color to white
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Change the background color to white
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Change the foreground color to the terminal default
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Change the background color to the terminal default
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Change the foreground color to bright black
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Change the foreground color to bright red
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Change the foreground color to bright green
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Change the foreground color to bright blue
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Cross out the text
Source§fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>where
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Set the background color at runtime. Only use if you do not know what color to use at
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Source§impl<T> PolicyExt for Twhere
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