Function pbrt::clamp

pub fn clamp<T>(val: T, low: T, high: T) -> T where
    T: PartialOrd, 

Clamp val between low and high.

Examples

use pbrt::clamp;

assert_eq!(clamp(-1., 0., 1.), 0.);
assert_eq!(clamp(0.5, 0., 1.), 0.5);
assert_eq!(clamp(2., 0., 1.), 1.0);

assert_eq!(clamp(-1, 0, 2), 0);
assert_eq!(clamp(1, 0, 2), 1);
assert_eq!(clamp(3, 0, 2), 2);