Struct Angle 

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

Represents an angle value in degrees.

Implementations

impl Angle

pub const fn zero() -> Self

Returns a zero angle.

pub fn new(value: f32) -> Self

Creates a new angle value, normalizing it to the range [0, 360).

impl Angle

pub fn degrees_from_keywords( horizontal: Option<HorizontalKeyword>, vertical: Option<VerticalKeyword>, ) -> Angle

Calculates the angle from horizontal and vertical keywords.

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 Angle

fn clone(&self) -> Angle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Angle

impl Debug for Angle

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

Formats the value using the given formatter.

impl Default for Angle

fn default() -> Angle

Returns the “default value” for a type.

impl Deref for Angle

type Target = f32

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'i> FromCss<'i> for Angle

const VALID_TOKENS: &'static [CssToken]

Returns the list of valid CSS tokens for this type.

fn from_css(input: &mut Parser<'i, '_>) -> ParseResult<'i, Angle>

Parses the type from a Parser instance.

fn from_str(source: &'i str) -> ParseResult<'i, Self>

where Self: Sized,

Helper function to parse the type from a string.

const EXPECT_MESSAGE: CssExpectedMessage = CssExpectedMessage::OneValue

Message template used when building parse errors for this type.

impl Neg for Angle

type Output = Angle

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl PartialEq for Angle

fn eq(&self, other: &Angle) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Angle

impl TailwindPropertyParser for Angle

fn parse_tw(token: &str) -> Option<Self>

Parse a tailwind property from a token.

fn parse_tw_with_arbitrary(token: &str) -> Option<Self>

Parse a tailwind property from a token, with support for arbitrary values.

impl ToCss for Angle

fn to_css<W: Write>(&self, dest: &mut W) -> Result

Write the CSS representation of this value into dest.