Struct Percentage 

pub struct Percentage(/* private fields */);

Implementations

impl Percentage

pub fn new(value: u8) -> Self

pub fn new_normalized(value: f32) -> Self

Methods from Deref<Target = f32>

pub const RADIX: u32 = 2

pub const BITS: u32 = 32

pub const MANTISSA_DIGITS: u32 = 24

pub const DIGITS: u32 = 6

pub const EPSILON: f32 = 1.19209290e-07_f32

pub const MIN: f32 = -3.40282347e+38_f32

pub const MIN_POSITIVE: f32 = 1.17549435e-38_f32

pub const MAX: f32 = 3.40282347e+38_f32

pub const MIN_EXP: i32 = -125

pub const MAX_EXP: i32 = 128

pub const MIN_10_EXP: i32 = -37

pub const MAX_10_EXP: i32 = 38

pub const NAN: f32

pub const INFINITY: f32

pub const NEG_INFINITY: f32

pub const MAX_EXACT_INTEGER: i32

pub const MIN_EXACT_INTEGER: i32

pub const SIGN_MASK: u32 = 0x8000_0000

pub const EXPONENT_MASK: u32 = 0x7f80_0000

pub const MANTISSA_MASK: u32 = 0x007f_ffff

pub fn total_cmp(&self, other: &f32) -> 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 f32. 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: f32,
}

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: f32::INFINITY },
    GoodBoy { name: "Abs. Unit".to_owned(), weight: f32::NAN },
    GoodBoy { name: "Floaty".to_owned(), weight: -5.0 },
];

bois.sort_by(|a, b| a.weight.total_cmp(&b.weight));

// `f32::NAN` could be positive or negative, which will affect the sort order.
if f32::NAN.is_sign_negative() {
    assert!(bois.into_iter().map(|b| b.weight)
        .zip([f32::NAN, -5.0, 0.1, 10.0, 99.0, f32::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, f32::INFINITY, f32::NAN].iter())
        .all(|(a, b)| a.to_bits() == b.to_bits()))
}

Trait Implementations

impl Clone for Percentage

fn clone(&self) -> Percentage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Percentage

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for Percentage

type Target = f32

The resulting type after dereferencing.

fn deref(&self) -> &f32

Dereferences the value.

impl<'de> Deserialize<'de> for Percentage

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Percentage

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<f32> for Percentage

fn from(value: f32) -> Self

Converts to this type from the input type.

impl From<u8> for Percentage

fn from(value: u8) -> Self

Converts to this type from the input type.

impl Serialize for Percentage

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Percentage