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pub enum Cmp {
Equal,
Greater,
Less,
}
pub fn min(x: var, y: var) -> @typeOf(x + y) {
if (x < y) x else y
}
pub fn max(x: var, y: var) -> @typeOf(x + y) {
if (x > y) x else y
}
pub error Overflow;
pub fn mulOverflow(inline T: type, a: T, b: T) -> %T {
var answer: T = undefined;
if (@mulWithOverflow(T, a, b, &answer)) error.Overflow else answer
}
pub fn addOverflow(inline T: type, a: T, b: T) -> %T {
var answer: T = undefined;
if (@addWithOverflow(T, a, b, &answer)) error.Overflow else answer
}
pub fn subOverflow(inline T: type, a: T, b: T) -> %T {
var answer: T = undefined;
if (@subWithOverflow(T, a, b, &answer)) error.Overflow else answer
}
pub fn shlOverflow(inline T: type, a: T, b: T) -> %T {
var answer: T = undefined;
if (@shlWithOverflow(T, a, b, &answer)) error.Overflow else answer
}
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