Struct NonNegativeRealScalar 

pub struct NonNegativeRealScalar<RealType: RealScalar>(/* private fields */);

Type-safe wrapper for non-negative real scalar values.

NonNegativeRealScalar<T> guarantees that wrapped values are greater than or equal to zero. Zero is valid for this type. For values that must be strictly positive, use PositiveRealScalar.

Mathematical Definition

NonNegativeRealScalar<T> = { x ∈ T : x ≥ 0 }

This is the set of non-negative real numbers ℝ₀⁺, which includes zero.

Use Cases

• Distances (can be zero when comparing a value to itself)
• Absolute values
• Magnitudes
• Any quantity that is mathematically required to be ≥ 0

Examples

Basic Usage

use num_valid::{*, scalars::*};
use try_create::TryNew;

// Zero is valid
let zero = NonNegativeRealScalar::try_new(0.0_f64).unwrap();
assert_eq!(zero.as_raw_scalar_ref(), &0.0);

// Positive values are valid
let positive = NonNegativeRealScalar::try_new(5.0_f64).unwrap();

// Negative values are rejected
assert!(matches!(
    NonNegativeRealScalar::try_new(-1.0_f64),
    Err(ErrorsNonNegativeRealScalar::NegativeValue { .. })
));

Use Case: Computing Distances

use num_valid::{*, scalars::NonNegativeRealScalar};
use try_create::TryNew;

fn distance(a: f64, b: f64) -> NonNegativeRealScalar<f64> {
    NonNegativeRealScalar::try_new((a - b).abs()).unwrap()
}

// Different points
let d1 = distance(0.0, 5.0);
assert_eq!(*d1.as_raw_scalar_ref(), 5.0);

// Same point (zero distance is valid!)
let d2 = distance(3.0, 3.0);
assert_eq!(d2.as_raw_scalar_ref(), &0.0);

Algebraic and Ordering Operations

NonNegativeRealScalar supports:

• Addition: Sum of non-negative values is non-negative
• Multiplication: Product of non-negative values is non-negative
• Integer powers: Raising non-negative to any integer exponent yields non-negative
• Additive identity (Zero): For neutral addition operations
• Multiplicative identity (One): For neutral multiplication operations
• Comparison (Max, Min): Ordering and selection helpers

use num::{One, Zero};
use num_valid::{
    *,
    functions::{Max, Min, Pow},
    scalars::NonNegativeRealScalar,
};
use try_create::TryNew;

let a = NonNegativeRealScalar::try_new(1.25_f64).unwrap();
let b = NonNegativeRealScalar::try_new(2.75_f64).unwrap();

// Add preserves non-negativity for valid operands.
let sum = a.clone() + &b;
assert_eq!(*sum.as_raw_scalar_ref(), 4.0);

// Multiply preserves non-negativity
let product = a * b;
assert!(*product.as_raw_scalar_ref() > 0.0);

// Integer powers preserve non-negativity
let base = NonNegativeRealScalar::try_new(2.0_f64).unwrap();
let squared = base.clone().pow(2u32);
assert_eq!(*squared.as_raw_scalar_ref(), 4.0);

// Zero is the additive identity.
let z = NonNegativeRealScalar::<f64>::zero();
assert!(z.is_zero());
assert_eq!(*(sum + z).as_raw_scalar_ref(), 4.0);

// One is the multiplicative identity.
let one = NonNegativeRealScalar::<f64>::one();
let result = base.clone() * one;
assert_eq!(*result.as_raw_scalar_ref(), 2.0);

let x = NonNegativeRealScalar::try_new(1.0_f64).unwrap();
let y = NonNegativeRealScalar::try_new(3.0_f64).unwrap();
assert_eq!(*Max::max_by_ref(&x, &y).as_raw_scalar_ref(), 3.0);
assert_eq!(*Min::min_by_value(x, y).as_raw_scalar_ref(), 1.0);

Implementations

impl<RealType: RealScalar> NonNegativeRealScalar<RealType>

pub fn into_inner(self) -> RealType

Consumes the struct and returns the inner value.

impl<RealType: RealScalar> NonNegativeRealScalar<RealType>

pub fn sqrt(self) -> Self

Computes the square root of this non-negative scalar.

Since the input is guaranteed to be non-negative, the result is always defined and remains non-negative.

Examples

use num_valid::{*, scalars::NonNegativeRealScalar};
use try_create::TryNew;

let value = NonNegativeRealScalar::try_new(4.0_f64).unwrap();
let sqrt = value.sqrt();
assert_eq!(sqrt.as_raw_scalar_ref(), &2.0);

pub fn new(value: RealType) -> Self

Trait Implementations

impl<RealType: RealScalar> Add for NonNegativeRealScalar<RealType>

Implements additive composition for NonNegativeRealScalar.

Since both operands are guaranteed to be non-negative, their sum is also non-negative.

type Output = NonNegativeRealScalar<RealType>

The resulting type after applying the + operator.

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

Performs the + operation.

impl<'a, RealType: RealScalar> Add<&'a NonNegativeRealScalar<RealType>> for NonNegativeRealScalar<RealType>

Implements reference-based addition for NonNegativeRealScalar.

This allows adding a reference to a non-negative scalar without consuming it. Since both operands are guaranteed to be non-negative, their sum is also non-negative.

type Output = NonNegativeRealScalar<RealType>

The resulting type after applying the + operator.

fn add( self, other: &'a NonNegativeRealScalar<RealType>, ) -> NonNegativeRealScalar<RealType>

Performs the + operation.

impl<'a, RealType: RealScalar> Add<&'a NonNegativeRealScalar<RealType>> for PositiveRealScalar<RealType>

Adds a NonNegativeRealScalar by reference to a PositiveRealScalar, yielding a PositiveRealScalar.

Since self is strictly positive (x > 0) and other is non-negative (y ≥ 0), their sum is strictly positive: x + y > 0.

type Output = PositiveRealScalar<RealType>

The resulting type after applying the + operator.

fn add( self, other: &'a NonNegativeRealScalar<RealType>, ) -> PositiveRealScalar<RealType>

Performs the + operation.

impl<'a, RealType: RealScalar> Add<&'a PositiveRealScalar<RealType>> for NonNegativeRealScalar<RealType>

Adds a PositiveRealScalar by reference to a NonNegativeRealScalar, yielding a PositiveRealScalar.

Since other is strictly positive (x > 0) and self is non-negative (y ≥ 0), their sum is strictly positive: x + y > 0.

type Output = PositiveRealScalar<RealType>

The resulting type after applying the + operator.

fn add( self, other: &'a PositiveRealScalar<RealType>, ) -> PositiveRealScalar<RealType>

Performs the + operation.

impl<RealType: RealScalar> Add<NonNegativeRealScalar<RealType>> for PositiveRealScalar<RealType>

Adds a NonNegativeRealScalar to a PositiveRealScalar, yielding a PositiveRealScalar.

Since self is strictly positive (x > 0) and other is non-negative (y ≥ 0), their sum is strictly positive: x + y > 0.

Examples

use num_valid::{*, scalars::*};
use try_create::TryNew;

let pos = PositiveRealScalar::try_new(2.0_f64).unwrap();
let non_neg = NonNegativeRealScalar::try_new(3.0_f64).unwrap();

let result: PositiveRealScalar<f64> = pos + non_neg;
assert_eq!(result.as_raw_scalar_ref(), &5.0);

type Output = PositiveRealScalar<RealType>

The resulting type after applying the + operator.

fn add( self, other: NonNegativeRealScalar<RealType>, ) -> PositiveRealScalar<RealType>

Performs the + operation.

impl<RealType: RealScalar> Add<PositiveRealScalar<RealType>> for NonNegativeRealScalar<RealType>

Adds a PositiveRealScalar to a NonNegativeRealScalar, yielding a PositiveRealScalar.

Since other is strictly positive (x > 0) and self is non-negative (y ≥ 0), their sum is strictly positive: x + y > 0.

Examples

use num_valid::{*, scalars::*};
use try_create::TryNew;

let non_neg = NonNegativeRealScalar::try_new(0.0_f64).unwrap(); // zero!
let pos = PositiveRealScalar::try_new(5.0_f64).unwrap();

let result: PositiveRealScalar<f64> = non_neg + pos;
assert_eq!(result.as_raw_scalar_ref(), &5.0);

type Output = PositiveRealScalar<RealType>

The resulting type after applying the + operator.

fn add( self, other: PositiveRealScalar<RealType>, ) -> PositiveRealScalar<RealType>

Performs the + operation.

impl<RealType: RealScalar> AddAssign for NonNegativeRealScalar<RealType>

Implements in-place addition for NonNegativeRealScalar by value.

This allows adding a non-negative scalar value to self.

fn add_assign(&mut self, other: NonNegativeRealScalar<RealType>)

Performs the += operation.

impl<'a, RealType: RealScalar> AddAssign<&'a NonNegativeRealScalar<RealType>> for NonNegativeRealScalar<RealType>

Implements in-place reference-based addition for NonNegativeRealScalar.

This allows adding a reference to a non-negative scalar to self without consuming self.

fn add_assign(&mut self, other: &'a NonNegativeRealScalar<RealType>)

Performs the += operation.

impl<RealType: RealScalar> AsRef<NonNegativeRealScalar<RealType>> for AbsoluteTolerance<RealType>

fn as_ref(&self) -> &NonNegativeRealScalar<RealType>

Converts this type into a shared reference of the (usually inferred) input type.

impl<RealType: RealScalar> AsRef<NonNegativeRealScalar<RealType>> for RelativeTolerance<RealType>

fn as_ref(&self) -> &NonNegativeRealScalar<RealType>

Converts this type into a shared reference of the (usually inferred) input type.

impl<RealType: RealScalar> AsRef<RealType> for NonNegativeRealScalar<RealType>

fn as_ref(&self) -> &RealType

Converts this type into a shared reference of the (usually inferred) input type.

impl<RealType: Clone + RealScalar> Clone for NonNegativeRealScalar<RealType>

fn clone(&self) -> NonNegativeRealScalar<RealType>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<RealType: Debug + RealScalar> Debug for NonNegativeRealScalar<RealType>

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

Formats the value using the given formatter.

impl<'de, RealType> Deserialize<'de> for NonNegativeRealScalar<RealType>

where RealType: for<'a> Deserialize<'a> + RealScalar,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<RealType> Display for NonNegativeRealScalar<RealType>

where RealType: Display + RealScalar,

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

Formats the value using the given formatter.

impl<RealType: RealScalar> From<PositiveRealScalar<RealType>> for NonNegativeRealScalar<RealType>

Converts a PositiveRealScalar<T> to a NonNegativeRealScalar<T>.

This conversion is mathematically valid because every positive number (x > 0) is also non-negative (x ≥ 0). The conversion is infallible and zero-cost.

Examples

use num_valid::{*, scalars::*};
use try_create::TryNew;

let positive = PositiveRealScalar::try_new(5.0_f64).unwrap();
let non_negative: NonNegativeRealScalar<f64> = positive.into();

assert_eq!(non_negative.as_raw_scalar_ref(), &5.0);

fn from(positive: PositiveRealScalar<RealType>) -> Self

Converts to this type from the input type.

impl<RealType: RealScalar> IntoInner for NonNegativeRealScalar<RealType>

fn into_inner(self) -> Self::InnerType

Consumes the struct and returns the inner value.

type InnerType = RealType

The type of the inner value that will be extracted.

impl<RealType: RealScalar> Max for NonNegativeRealScalar<RealType>

Implements Max for NonNegativeRealScalar.

Maximum selection is delegated to the default trait behavior based on PartialOrd.

fn max_by_ref<'a>(&'a self, other: &'a Self) -> &'a Self

Returns a reference to the maximum of self and other.

fn max_by_value(self, other: Self) -> Self

Returns the maximum of self and other, consuming both values.

impl<RealType: RealScalar> Min for NonNegativeRealScalar<RealType>

Implements Min for NonNegativeRealScalar.

Minimum selection is delegated to the default trait behavior based on PartialOrd.

fn min_by_ref<'a>(&'a self, other: &'a Self) -> &'a Self

Returns a reference to the minimum of self and other.

fn min_by_value(self, other: Self) -> Self

Returns the minimum of self and other, consuming both values.

impl<RealType: RealScalar> Mul for NonNegativeRealScalar<RealType>

Implements multiplicative composition for NonNegativeRealScalar.

Since both operands are guaranteed to be non-negative, their product is also non-negative.

type Output = NonNegativeRealScalar<RealType>

The resulting type after applying the * operator.

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

Performs the * operation.

impl<'a, RealType: RealScalar> Mul<&'a NonNegativeRealScalar<RealType>> for NonNegativeRealScalar<RealType>

Implements reference-based multiplication for NonNegativeRealScalar.

This allows multiplying a non-negative scalar by a reference to another non-negative scalar without consuming it. Since both operands are guaranteed to be non-negative, their product is also non-negative.

type Output = NonNegativeRealScalar<RealType>

The resulting type after applying the * operator.

fn mul( self, other: &'a NonNegativeRealScalar<RealType>, ) -> NonNegativeRealScalar<RealType>

Performs the * operation.

impl<RealType: RealScalar> MulAssign for NonNegativeRealScalar<RealType>

Implements in-place multiplication for NonNegativeRealScalar by value.

This allows multiplying self by a non-negative scalar value.

fn mul_assign(&mut self, other: NonNegativeRealScalar<RealType>)

Performs the *= operation.

impl<'a, RealType: RealScalar> MulAssign<&'a NonNegativeRealScalar<RealType>> for NonNegativeRealScalar<RealType>

Implements in-place reference-based multiplication for NonNegativeRealScalar.

This allows multiplying self by a reference to another non-negative scalar without consuming self.

fn mul_assign(&mut self, other: &'a NonNegativeRealScalar<RealType>)

Performs the *= operation.

impl<RealType: RealScalar> NeumaierAddable for NonNegativeRealScalar<RealType>

Implements Neumaier compensated summation for NonNegativeRealScalar.

This implementation delegates to the underlying real scalar type’s Neumaier compensated sum operation, preserving numerical stability for sums of non-negative values.

fn neumaier_compensated_sum( value: Self, sum: &mut Self, compensation: &mut Self, )

Performs one step of the Neumaier compensated summation algorithm.

impl<RealType: RealScalar> One for NonNegativeRealScalar<RealType>

fn one() -> Self

Returns the multiplicative identity element of Self, 1.

fn set_one(&mut self)

Sets self to the multiplicative identity element of Self, 1.

fn is_one(&self) -> bool

where Self: PartialEq,

Returns true if self is equal to the multiplicative identity.

impl<RealType: PartialEq + RealScalar> PartialEq for NonNegativeRealScalar<RealType>

fn eq(&self, other: &NonNegativeRealScalar<RealType>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<RealType: PartialOrd + RealScalar> PartialOrd for NonNegativeRealScalar<RealType>

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl<RealType: RealScalar> Pow<i8> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: i8) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, i8>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: i8) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<i16> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: i16) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, i16>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: i16) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<i32> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: i32) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, i32>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: i32) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<i64> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: i64) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, i64>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: i64) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<i128> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: i128) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, i128>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: i128) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<isize> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: isize) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, isize>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: isize) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<u8> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: u8) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, u8>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: u8) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<u16> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: u16) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, u16>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: u16) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<u32> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: u32) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, u32>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: u32) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<u64> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: u64) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, u64>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: u64) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<u128> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: u128) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, u128>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: u128) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> Pow<usize> for NonNegativeRealScalar<RealType>

fn pow(self, exponent: usize) -> Self

Raises the number self to the power exponent.

type Error = FunctionErrors<PowIntExponentInputErrors<<RealType as IntoInner>::InnerType, usize>, <<RealType as IntoInner>::InnerType as RawScalarValidate>::ValidationError>

The error type that can be returned by the try_pow method. This type must implement std::error::Error for proper error handling.

fn try_pow(self, exponent: usize) -> Result<Self, Self::Error>

Attempts to compute self (the base) raised to the power of exponent.

impl<RealType: RealScalar> ScalarCore for NonNegativeRealScalar<RealType>

type RawScalarType = <RealType as ScalarCore>::RawScalarType

The type of the inner value that will be extracted.

fn as_raw_scalar_ref(&self) -> &Self::RawScalarType

Returns a reference to the inner value.

fn into_raw_scalar(self) -> Self::RawScalarType

Consumes the scalar and returns its inner raw scalar value.

fn eq_raw(&self, other: &Self::RawScalarType) -> bool

Compares this scalar with a value in its underlying raw representation.

impl<RealType> Serialize for NonNegativeRealScalar<RealType>

where RealType: Serialize + RealScalar,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<RealType: PartialEq + RealScalar> StructuralPartialEq for NonNegativeRealScalar<RealType>

impl<RealType: RealScalar> TryNew for NonNegativeRealScalar<RealType>

fn try_new(value: RealType) -> Result<Self, Self::Error>

Attempts to create a NonNegativeRealScalar from a value.

Errors

Returns ErrorsNonNegativeRealScalar::NegativeValue if the input is negative.

Panics (Debug Mode Only)

In debug builds, panics if the input is not finite (NaN or infinity).

Examples

use num_valid::scalars::{NonNegativeRealScalar, ErrorsNonNegativeRealScalar};
use try_create::TryNew;

// Zero is valid
assert!(NonNegativeRealScalar::try_new(0.0_f64).is_ok());

// Positive is valid
assert!(NonNegativeRealScalar::try_new(1.0_f64).is_ok());

// Negative is rejected
assert!(matches!(
    NonNegativeRealScalar::try_new(-1.0_f64),
    Err(ErrorsNonNegativeRealScalar::NegativeValue { .. })
));

type Error = ErrorsNonNegativeRealScalar<RealType>

The error type that can be returned by the try_new method.

impl<RealType: RealScalar> Zero for NonNegativeRealScalar<RealType>

Implements Zero for NonNegativeRealScalar.

The zero value is always valid, and acts as the additive identity.

fn is_zero(&self) -> bool

Returns true if self is equal to the additive identity.

fn zero() -> Self

Returns the additive identity element of Self, 0.

fn set_zero(&mut self)

Sets self to the additive identity element of Self, 0.