diff options
Diffstat (limited to 'src/pkg/rand/rand.go')
| -rw-r--r-- | src/pkg/rand/rand.go | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/pkg/rand/rand.go b/src/pkg/rand/rand.go index 0d69490f3..68e6e2c20 100644 --- a/src/pkg/rand/rand.go +++ b/src/pkg/rand/rand.go @@ -43,7 +43,7 @@ func (r *Rand) Int31() int32 { return int32(r.Int63() >> 32) } // Int returns a non-negative pseudo-random int. func (r *Rand) Int() int { u := uint(r.Int63()); - return int(u<<1>>1); // clear sign bit if int == int32 + return int(u << 1 >> 1); // clear sign bit if int == int32 } // Int63n returns, as an int64, a non-negative pseudo-random number in [0,n). @@ -51,12 +51,12 @@ func (r *Rand) Int63n(n int64) int64 { if n <= 0 { return 0 } - max := int64((1<<63) - 1 - (1<<63)%uint64(n)); + max := int64((1 << 63) - 1 - (1<<63)%uint64(n)); v := r.Int63(); for v > max { v = r.Int63() } - return v%n; + return v % n; } // Int31n returns, as an int32, a non-negative pseudo-random number in [0,n). @@ -66,7 +66,7 @@ func (r *Rand) Int31n(n int32) int32 { return int32(r.Int63n(int64(n))) } func (r *Rand) Intn(n int) int { return int(r.Int63n(int64(n))) } // Float64 returns, as a float64, a pseudo-random number in [0.0,1.0). -func (r *Rand) Float64() float64 { return float64(r.Int63())/(1<<63) } +func (r *Rand) Float64() float64 { return float64(r.Int63()) / (1 << 63) } // Float32 returns, as a float32, a pseudo-random number in [0.0,1.0). func (r *Rand) Float32() float32 { return float32(r.Float64()) } @@ -81,7 +81,7 @@ func (r *Rand) Perm(n int) []int { m[i] = i } for i := 0; i < n; i++ { - j := r.Intn(i+1); + j := r.Intn(i + 1); m[i], m[j] = m[j], m[i]; } return m; |