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stringy

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This commit is contained in:
Josh Deprez 2021-09-07 17:16:50 +10:00
parent ebbf76d312
commit 6c5f482e56
1 changed files with 10 additions and 0 deletions
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10
engine/rational.go
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@ -1,11 +1,21 @@
package engine
import "strconv"
// Rat is a (small) rational number implementation. Overflow can happen.
type Rat struct{ N, D int }
// IntRat returns the rational representation of n.
func IntRat(n int) Rat { return Rat{N: n, D: 1} }
// String returns a nice string representation like "-3/5".
func (r Rat) String() string {
if r.D == 1 {
return strconv.Itoa(r.N)
}
return strconv.Itoa(r.N) + "/" + strconv.Itoa(r.D)
}
// Int returns r.N / r.D.
func (r Rat) Int() int { return r.N / r.D }