pub fn min<T, A, B, C>(a: A, b: B, c: C) -> impl Goalwhere
T: Unify + PartialOrd,
A: Into<Value<T>>,
B: Into<Value<T>>,
C: Into<Value<T>>,
Expand description
Get the lesser of two values according to std::cmp::min
.
Example:
use canrun::{unify, LVar, all, Query};
use canrun::cmp::min;
let (x, y, z) = (LVar::new(), LVar::new(), LVar::new());
let goal = all![
unify(x, 1),
unify(y, 2),
unify(z, 1),
min(x, y, z),
];
let results: Vec<_> = goal.query((x, y, z)).collect();
assert_eq!(results, vec![(1, 2, 1)]);