Struct floating_bar::r64

pub struct r64(_);

The 64-bit floating bar type.

Methods

impl r64

pub fn numer(self) -> u64

Returns the numerator value for this rational number.

pub fn denom(self) -> u64

Returns the denominator value for this rational number.

pub fn floor(self) -> r64

Returns the largest integer less than or equal to a number.

pub fn ceil(self) -> r64

Returns the smallest integer greater than or equal to a number.

pub fn round(self) -> r64

Returns the nearest integer to a number. Round half-way cases away from zero.

pub fn trunc(self) -> r64

Returns the integer part of a number.

pub fn fract(self) -> r64

Returns the fractional part of a number.

pub fn abs(self) -> r64

Computes the absolute value of self. Returns NaN if the number is NaN.

pub fn signum(self) -> r64

Returns a number that represents the sign of self.

• 1 if the number is positive
• -1 if the number is negative
• 0 if the number is +0, -0, or NaN

pub fn pow(self, p: i32) -> r64

Raises a number to an integer power.

pub fn checked_pow(self, p: i32) -> Option<r64>

Raises a number to an integer power.

pub fn checked_sqrt(self) -> Option<r64>

Takes the checked square root of a number.

If self is positive and both the numerator and denominator are perfect squares, this returns their square root. Otherwise, returns None.

pub fn is_nan(self) -> bool

Returns true if this value is NaN and false otherwise.

pub fn is_normal(self) -> bool

Returns true if the number is neither zero, subnormal, or NaN.

pub fn is_positive(self) -> bool

Returns true if and only if self has a positive sign, including +0.0 (but not NaNs with positive sign bit).

pub fn is_negative(self) -> bool

Returns true if and only if self has a negative sign, including -0.0 (but not NaNs with negative sign bit).

pub fn recip(self) -> r64

Takes the reciprocal (inverse) of a number, 1/x.

Panics

Panics when trying to set a numerator of zero as denominator.

pub fn max(self, other: r64) -> r64

Returns the maximum of the two numbers.

If one of the arguments is NaN, then the other argument is returned.

pub fn min(self, other: r64) -> r64

Returns the minimum of the two numbers.

If one of the arguments is NaN, then the other argument is returned.

pub fn to_bits(self) -> u64

Raw transmutation to u64.

pub fn from_bits(bits: u64) -> r64

Raw transmutation from u64.

pub fn simplify(self) -> r64

Cancels out common factors between the numerator and the denominator.

Trait Implementations

impl From<u8> for r64

fn from(v: u8) -> Self

Performs the conversion.

impl From<i8> for r64

fn from(v: i8) -> Self

Performs the conversion.

impl From<u16> for r64

fn from(v: u16) -> Self

Performs the conversion.

impl From<i16> for r64

fn from(v: i16) -> Self

Performs the conversion.

impl From<u32> for r64

fn from(v: u32) -> Self

Performs the conversion.

impl From<i32> for r64

fn from(v: i32) -> Self

Performs the conversion.

impl From<r32> for r64

fn from(v: r32) -> Self

Performs the conversion.

impl From<f32> for r64

fn from(f: f32) -> Self

Performs the conversion.

impl From<f64> for r64

fn from(f: f64) -> Self

Based on: https://www.johndcook.com/blog/2010/10/20/best-rational-approximation/

impl Into<f32> for r64

fn into(self) -> f32

Performs the conversion.

impl Into<f64> for r64

fn into(self) -> f64

Performs the conversion.

impl Clone for r64

fn clone(&self) -> r64

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for r64

impl Default for r64

fn default() -> r64

Returns the "default value" for a type.

impl Eq for r64

impl PartialEq<r64> for r64

fn eq(&self, other: &r64) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialOrd<r64> for r64

fn partial_cmp(&self, other: &r64) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use] fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use] fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use] fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use] fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Debug for r64

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

Formats the value using the given formatter.

impl Display for r64

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

Formats the value using the given formatter.

impl Div<r64> for r64

type Output = r64

The resulting type after applying the / operator.

fn div(self, other: r64) -> r64

Performs the / operation.

impl Rem<r64> for r64

type Output = r64

The resulting type after applying the % operator.

fn rem(self, other: r64) -> r64

Performs the % operation.

impl Sub<r64> for r64

type Output = r64

The resulting type after applying the - operator.

fn sub(self, other: r64) -> r64

Performs the - operation.

impl FromStr for r64

type Err = ParseRatioErr

The associated error which can be returned from parsing.

fn from_str(src: &str) -> Result<Self, Self::Err>

Converts a string in base 10 to a rational.

This function accepts strings such as

• '157/50'
• '-157/50'
• '25', or equivalently, '25/1'
• 'NaN'

Leading and trailing whitespace represent an error.

Return value

Err(ParseRatioError) if the string did not represent a valid number. Otherwise, Ok(n) where n is the floating-bar number represented by src.

impl Add<r64> for r64

type Output = r64

The resulting type after applying the + operator.

fn add(self, other: r64) -> r64

Performs the + operation.

impl Mul<r64> for r64

type Output = r64

The resulting type after applying the * operator.

fn mul(self, other: r64) -> r64

Performs the * operation.

impl Neg for r64

type Output = r64

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl StructuralEq for r64