You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
396 B
Go
27 lines
396 B
Go
package mathx
|
|
|
|
import (
|
|
"math/rand"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
type Proba struct {
|
|
// rand.New(...) returns a non thread safe object
|
|
r *rand.Rand
|
|
lock sync.Mutex
|
|
}
|
|
|
|
func NewProba() *Proba {
|
|
return &Proba{
|
|
r: rand.New(rand.NewSource(time.Now().UnixNano())),
|
|
}
|
|
}
|
|
|
|
func (p *Proba) TrueOnProba(proba float64) (truth bool) {
|
|
p.lock.Lock()
|
|
truth = p.r.Float64() < proba
|
|
p.lock.Unlock()
|
|
return
|
|
}
|