wgpu_types/
math.rs

1//! Utilitary math functions.
2
3use std::ops::{Add, Rem, Sub};
4
5///
6/// Aligns a `value` to an `alignment`.
7///
8/// Returns the first number greater than or equal to `value` that is also a
9/// multiple of `alignment`. If `value` is already a multiple of `alignment`,
10/// `value` will be returned.
11///
12/// # Examples
13///
14/// ```
15/// # use wgpu_types::math::align_to;
16/// assert_eq!(align_to(253, 16), 256);
17/// assert_eq!(align_to(256, 16), 256);
18/// assert_eq!(align_to(0, 16), 0);
19/// ```
20///
21pub fn align_to<T>(value: T, alignment: T) -> T
22where
23    T: Add<Output = T> + Copy + Default + PartialEq<T> + Rem<Output = T> + Sub<Output = T>,
24{
25    let remainder = value % alignment;
26    if remainder == T::default() {
27        value
28    } else {
29        value + alignment - remainder
30    }
31}
wgpu_types/math.rs

wgpu_types/
math.rs
