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use std::{
fmt,
hash::{Hash, Hasher},
ops::{Add, AddAssign, Div, DivAssign, Mul, MulAssign},
};
use crate::*;
#[derive(Debug, PartialEq, PartialOrd, Clone, Copy)]
pub struct NonNegative {
val: f64,
}
impl NonNegative {
pub fn new(val: f64) -> Result<NonNegative> {
if val >= 0.0 {
return Ok(NonNegative { val });
}
Err(ErrorKind::NumberInWrongRange)
}
pub fn zero() -> NonNegative {
NonNegative { val: 0.0 }
}
pub fn one() -> NonNegative {
NonNegative { val: 1.0 }
}
pub fn get(&self) -> f64 {
self.val
}
pub fn sqrt(&self) -> NonNegative {
NonNegative {
val: self.val.sqrt(),
}
}
}
impl From<Positive> for NonNegative {
fn from(x: Positive) -> Self {
NonNegative { val: x.get() }
}
}
impl Eq for NonNegative {}
impl Hash for NonNegative {
#[inline(always)]
fn hash<H: Hasher>(&self, state: &mut H) {
hash_f64(self.val, state);
}
}
impl Add for NonNegative {
type Output = NonNegative;
fn add(self, other: NonNegative) -> NonNegative {
NonNegative {
val: self.val + other.val,
}
}
}
impl Add<Positive> for NonNegative {
type Output = NonNegative;
fn add(self, other: Positive) -> NonNegative {
NonNegative {
val: self.val + other.get(),
}
}
}
impl AddAssign for NonNegative {
fn add_assign(&mut self, other: NonNegative) {
self.val += other.val;
}
}
impl AddAssign<Positive> for NonNegative {
fn add_assign(&mut self, other: Positive) {
self.val += other.get();
}
}
impl Mul for NonNegative {
type Output = NonNegative;
fn mul(self, other: NonNegative) -> NonNegative {
NonNegative {
val: self.val * other.val,
}
}
}
impl Mul<Positive> for NonNegative {
type Output = NonNegative;
fn mul(self, other: Positive) -> NonNegative {
NonNegative {
val: self.val * other.get(),
}
}
}
impl MulAssign for NonNegative {
fn mul_assign(&mut self, other: NonNegative) {
self.val *= other.val;
}
}
impl MulAssign<Positive> for NonNegative {
fn mul_assign(&mut self, other: Positive) {
self.val *= other.get();
}
}
impl Div for NonNegative {
type Output = NonNegative;
fn div(self, other: NonNegative) -> NonNegative {
NonNegative {
val: self.val / other.val,
}
}
}
impl Div<Positive> for NonNegative {
type Output = NonNegative;
fn div(self, other: Positive) -> NonNegative {
NonNegative {
val: self.val / other.get(),
}
}
}
impl DivAssign for NonNegative {
fn div_assign(&mut self, other: NonNegative) {
self.val /= other.val;
}
}
impl DivAssign<Positive> for NonNegative {
fn div_assign(&mut self, other: Positive) {
self.val /= other.get();
}
}
impl Into<f64> for NonNegative {
fn into(self) -> f64 {
self.val
}
}
impl AsRef<f64> for NonNegative {
fn as_ref(&self) -> &f64 {
&self.val
}
}
impl Default for NonNegative {
fn default() -> Self {
Self::zero()
}
}
impl fmt::Display for NonNegative {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", self.val)
}
}