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many lint fixes

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Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов
2022-01-10 16:47:37 +03:00
parent 94929878fe
commit 74765b4c5f
23 changed files with 190 additions and 85 deletions
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14
util/rand/rand.go
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@@ -10,16 +10,19 @@ type Rand struct {
buf [8]byte
}
// Int31 function implementation
func (r *Rand) Int31() int32 {
_, _ = crand.Read(r.buf[:4])
return int32(binary.BigEndian.Uint32(r.buf[:4]) & ^uint32(1<<31))
}
// Int function implementation
func (r *Rand) Int() int {
u := uint(r.Int63())
return int(u << 1 >> 1) // clear sign bit if int == int32
}
// Float64 function implementation
func (r *Rand) Float64() float64 {
again:
f := float64(r.Int63()) / (1 << 63)
@@ -29,6 +32,7 @@ again:
return f
}
// Float32 function implementation
func (r *Rand) Float32() float32 {
again:
f := float32(r.Float64())
@@ -38,14 +42,17 @@ again:
return f
}
// Uint32 function implementation
func (r *Rand) Uint32() uint32 {
return uint32(r.Int63() >> 31)
}
// Uint64 function implementation
func (r *Rand) Uint64() uint64 {
return uint64(r.Int63())>>31 | uint64(r.Int63())<<32
}
// Intn function implementation
func (r *Rand) Intn(n int) int {
if n <= 1<<31-1 {
return int(r.Int31n(int32(n)))
@@ -53,12 +60,13 @@ func (r *Rand) Intn(n int) int {
return int(r.Int63n(int64(n)))
}
// Int63 function implementation
func (r *Rand) Int63() int64 {
_, _ = crand.Read(r.buf[:])
return int64(binary.BigEndian.Uint64(r.buf[:]) & ^uint64(1<<63))
}
// Int31n copied from the standard library math/rand implementation of Int31n
// Int31n function implementation copied from the standard library math/rand implementation of Int31n
func (r *Rand) Int31n(n int32) int32 {
if n&(n-1) == 0 { // n is power of two, can mask
return r.Int31() & (n - 1)
@@ -71,7 +79,7 @@ func (r *Rand) Int31n(n int32) int32 {
return v % n
}
// Int63n copied from the standard library math/rand implementation of Int63n
// Int63n function implementation copied from the standard library math/rand implementation of Int63n
func (r *Rand) Int63n(n int64) int64 {
if n&(n-1) == 0 { // n is power of two, can mask
return r.Int63() & (n - 1)
@@ -84,7 +92,7 @@ func (r *Rand) Int63n(n int64) int64 {
return v % n
}
// Shuffle copied from the standard library math/rand implementation of Shuffle
// Shuffle function implementation copied from the standard library math/rand implementation of Shuffle
func (r *Rand) Shuffle(n int, swap func(i, j int)) {
if n < 0 {
panic("invalid argument to Shuffle")