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// Copyright 2020 the Blobloom authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build (!amd64 && !arm64) || nounsafe
// +build !amd64,!arm64 nounsafe
package blobloom
import (
"math/bits"
"sync/atomic"
)
func (f *Filter) intersect(g *Filter) {
for i := range f.b {
f.b[i].intersect(&g.b[i])
}
}
func (f *Filter) union(g *Filter) {
for i := range f.b {
f.b[i].union(&g.b[i])
}
}
func (b *block) intersect(c *block) {
b[0] &= c[0]
b[1] &= c[1]
b[2] &= c[2]
b[3] &= c[3]
b[4] &= c[4]
b[5] &= c[5]
b[6] &= c[6]
b[7] &= c[7]
b[8] &= c[8]
b[9] &= c[9]
b[10] &= c[10]
b[11] &= c[11]
b[12] &= c[12]
b[13] &= c[13]
b[14] &= c[14]
b[15] &= c[15]
}
func (b *block) union(c *block) {
b[0] |= c[0]
b[1] |= c[1]
b[2] |= c[2]
b[3] |= c[3]
b[4] |= c[4]
b[5] |= c[5]
b[6] |= c[6]
b[7] |= c[7]
b[8] |= c[8]
b[9] |= c[9]
b[10] |= c[10]
b[11] |= c[11]
b[12] |= c[12]
b[13] |= c[13]
b[14] |= c[14]
b[15] |= c[15]
}
func onescount(b *block) (n int) {
n += bits.OnesCount32(b[0])
n += bits.OnesCount32(b[1])
n += bits.OnesCount32(b[2])
n += bits.OnesCount32(b[3])
n += bits.OnesCount32(b[4])
n += bits.OnesCount32(b[5])
n += bits.OnesCount32(b[6])
n += bits.OnesCount32(b[7])
n += bits.OnesCount32(b[8])
n += bits.OnesCount32(b[9])
n += bits.OnesCount32(b[10])
n += bits.OnesCount32(b[11])
n += bits.OnesCount32(b[12])
n += bits.OnesCount32(b[13])
n += bits.OnesCount32(b[14])
n += bits.OnesCount32(b[15])
return n
}
func onescountAtomic(b *block) (n int) {
n += bits.OnesCount32(atomic.LoadUint32(&b[0]))
n += bits.OnesCount32(atomic.LoadUint32(&b[1]))
n += bits.OnesCount32(atomic.LoadUint32(&b[2]))
n += bits.OnesCount32(atomic.LoadUint32(&b[3]))
n += bits.OnesCount32(atomic.LoadUint32(&b[4]))
n += bits.OnesCount32(atomic.LoadUint32(&b[5]))
n += bits.OnesCount32(atomic.LoadUint32(&b[6]))
n += bits.OnesCount32(atomic.LoadUint32(&b[7]))
n += bits.OnesCount32(atomic.LoadUint32(&b[8]))
n += bits.OnesCount32(atomic.LoadUint32(&b[9]))
n += bits.OnesCount32(atomic.LoadUint32(&b[10]))
n += bits.OnesCount32(atomic.LoadUint32(&b[11]))
n += bits.OnesCount32(atomic.LoadUint32(&b[12]))
n += bits.OnesCount32(atomic.LoadUint32(&b[13]))
n += bits.OnesCount32(atomic.LoadUint32(&b[14]))
n += bits.OnesCount32(atomic.LoadUint32(&b[15]))
return n
}
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