49 lines
820 B
Rust
49 lines
820 B
Rust
|
import cmp::Ord;
|
||
|
|
|
||
|
|
trait Abs {
|
||
|
|
pure fn abs() -> self;
|
||
|
|
}
|
||
|
|
|
||
|
|
impl int: Abs {
|
||
|
|
#[inline(always)]
|
||
|
|
pure fn abs() -> int {
|
||
|
|
if self >= 0 { self }
|
||
|
|
else {-self }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl float: Abs {
|
||
|
|
#[inline(always)]
|
||
|
|
pure fn abs() -> float {
|
||
|
|
if self >= 0f { self }
|
||
|
|
else {-self }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl f32: Abs {
|
||
|
|
#[inline(always)]
|
||
|
|
pure fn abs() -> f32 {
|
||
|
|
if self >= 0f32 { self }
|
||
|
|
else {-self }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl f64: Abs {
|
||
|
|
#[inline(always)]
|
||
|
|
pure fn abs() -> f64 {
|
||
|
|
if self >= 0f64 { self }
|
||
|
|
else {-self }
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[inline(always)]
|
||
|
|
pure fn min<T:copy Ord>(&&a:T, &&b:T) -> T {
|
||
|
|
if a < b { a }
|
||
|
|
else { b }
|
||
|
|
}
|
||
|
|
|
||
|
|
#[inline(always)]
|
||
|
|
pure fn max<T:copy Ord>(&&a:T, &&b:T) -> T {
|
||
|
|
if a > b { a }
|
||
|
|
else { b }
|
||
|
|
}
|