pub struct Dollars(/* private fields */);Expand description
US Dollar amount as floating point
Implementations§
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
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 Dollars
impl AddAssign for Dollars
Source§fn add_assign(&mut self, rhs: Self)
fn add_assign(&mut self, rhs: Self)
+= operation. Read moreSource§impl Bytes for Dollars
impl Bytes for Dollars
Source§impl CheckedSub<usize> for Dollars
impl CheckedSub<usize> for Dollars
fn checked_sub(self, rhs: usize) -> Option<Self>
Source§impl CheckedSub for Dollars
impl CheckedSub for Dollars
fn checked_sub(self, rhs: Self) -> Option<Self>
Source§impl<'de> Deserialize<'de> for Dollars
impl<'de> Deserialize<'de> for Dollars
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
Source§impl Formattable for Dollars
impl Formattable for Dollars
Source§impl From<CentsSigned> for Dollars
impl From<CentsSigned> for Dollars
Source§fn from(value: CentsSigned) -> Self
fn from(value: CentsSigned) -> Self
Source§impl From<CentsUnsigned> for Dollars
impl From<CentsUnsigned> for Dollars
Source§fn from(value: CentsUnsigned) -> Self
fn from(value: CentsUnsigned) -> Self
Source§impl From<CentsUnsignedCompact> for Dollars
impl From<CentsUnsignedCompact> for Dollars
Source§fn from(value: CentsUnsignedCompact) -> Self
fn from(value: CentsUnsignedCompact) -> Self
Source§impl From<Dollars> for CentsSigned
impl From<Dollars> for CentsSigned
Source§impl From<Dollars> for CentsUnsigned
impl From<Dollars> for CentsUnsigned
Source§impl From<Dollars> for CentsUnsignedCompact
impl From<Dollars> for CentsUnsignedCompact
Source§impl JsonSchema for Dollars
impl JsonSchema for Dollars
Source§fn schema_id() -> Cow<'static, str>
fn schema_id() -> Cow<'static, str>
Source§fn json_schema(generator: &mut SchemaGenerator) -> Schema
fn json_schema(generator: &mut SchemaGenerator) -> Schema
Source§fn inline_schema() -> bool
fn inline_schema() -> bool
$ref keyword. Read moreSource§impl Ord for Dollars
impl Ord for Dollars
Source§impl PartialOrd for Dollars
impl PartialOrd for Dollars
Source§impl Pco for Dollars
impl Pco for Dollars
type NumberType = <f64 as Pco>::NumberType
impl Copy for Dollars
impl Eq for Dollars
impl TransparentPco<<f64 as Pco>::NumberType> for Dollars
Auto Trait Implementations§
impl Freeze for Dollars
impl RefUnwindSafe for Dollars
impl Send for Dollars
impl Sync for Dollars
impl Unpin for Dollars
impl UnwindSafe for Dollars
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key and return true if they are equal.Source§impl<T> FromInnerSlice<<T as Pco>::NumberType> for Twhere
T: PcoVecValue,
impl<T> FromInnerSlice<<T as Pco>::NumberType> for Twhere
T: PcoVecValue,
const _SIZE_CHECK: ()
const _ALIGN_CHECK: ()
fn from_inner_slice(vec: Vec<<T as Pco>::NumberType>) -> Vec<T>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more