mirror of
https://github.com/featurebasedb/featurebase.git
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3c832591df
This commit moves the index package to the root. Because pilosa is an index at its core, it's redundant to have an index subpackage. It also provides better naming such as `pilosa.Bitmap` instead of `index.Bitmap`.
74 lines
1.2 KiB
Go
74 lines
1.2 KiB
Go
package pilosa
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import (
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"fmt"
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)
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type Blocks []uint64
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// NewBlocks returns a 32-length Block.
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func NewBlocks() Blocks {
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return make(Blocks, 32)
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}
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func (a Blocks) bitcount() uint64 {
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fmt.Println("bitcount:", a)
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return popcntSlice(a)
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}
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func (a Blocks) union(other Blocks) Blocks {
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ret := NewBlocks()
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for i, _ := range a {
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ret[i] = a[i] | other[i]
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}
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return ret
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}
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func (a Blocks) invert() Blocks {
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other := NewBlocks()
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for i, _ := range a {
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other[i] = ^a[i]
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}
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return other
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}
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func (a Blocks) copy() Blocks {
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other := NewBlocks()
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for i, _ := range a {
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other[i] = a[i]
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}
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return other
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}
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func (a Blocks) andcount(other Blocks) uint64 {
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println("andcount")
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return popcntAndSliceAsm(a, other)
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}
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func (a Blocks) intersection(other Blocks) Blocks {
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ret := NewBlocks()
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for i, _ := range a {
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ret[i] = a[i] & other[i]
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}
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return ret
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}
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func (a Blocks) difference(other Blocks) Blocks {
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ret := NewBlocks()
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for i, _ := range a {
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ret[i] = a[i] &^ other[i]
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}
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return ret
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}
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func (a Blocks) setBit(i uint8, bit uint8) (changed bool) {
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val := a[i] & (1 << bit)
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a[i] |= 1 << bit
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return val == 0
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}
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func (a Blocks) clearBit(i uint8, bit uint8) (changed bool) {
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val := a[i] & (1 << bit)
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a[i] &= ^(1 << bit)
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return val != 0
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}
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