Trait glm::ApproxEq

pub trait ApproxEq {
    type BaseType: BaseFloat;
    fn is_close_to(&self, rhs: &Self, max_diff: Self::BaseType) -> bool;

    fn is_approx_eq(&self, rhs: &Self) -> bool { ... }
}

Trait for comparing types that are derived from float numbers.

Note

Comparing float numbers is tricky. This trait is mainly for convenience. See this article for the details of comparing float numbers.

Associated Types

type BaseType: BaseFloat

Required Methods

fn is_close_to(&self, rhs: &Self, max_diff: Self::BaseType) -> bool

Returns true if the difference between x and y is less than max_diff.

Note

The meanings of "difference" and "less than" are up to the implementations.

Example

use glm::*;

let v1 = vec2(1000., 2000.); let v2 = vec2(1010., 1080.); assert!(v1.is_close_to(&v2, 50.)); assert!(!v1.is_close_to(&v2, 10.));

Provided Methods

fn is_approx_eq(&self, rhs: &Self) -> bool

Returns true if the difference between x and y is less than machine epsilon.

Example

use glm::*;

let f = 0.1_f32;
let mut sum = 0f32;
for i in 0..10 {
    sum += f;
}
assert_eq!(1.0_f32 == sum, false);
assert_eq!(1f32.is_approx_eq(&sum), true);

Implementations on Foreign Types

impl ApproxEq for f32

type BaseType = f32

fn is_close_to(&self, rhs: &f32, max_diff: f32) -> bool

fn is_approx_eq(&self, rhs: &Self) -> bool

impl ApproxEq for f64

type BaseType = f64

fn is_close_to(&self, rhs: &f64, max_diff: f64) -> bool

fn is_approx_eq(&self, rhs: &Self) -> bool

Implementors

• impl<T: BaseFloat> ApproxEq for Vector2<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Vector3<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Vector4<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix2<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix3x2<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix4x2<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix2x3<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix3<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix4x3<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix2x4<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix3x4<T> type BaseType = T;

• impl<T: BaseFloat> ApproxEq for Matrix4<T> type BaseType = T;