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33 lines
749 B
Go
33 lines
749 B
Go
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package compress
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import (
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"github.com/reducedb/encoding/cursor"
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"github.com/reducedb/encoding/delta/bp32"
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)
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// Compress compresses in[]int32 to out[]int32
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func Compress32(in []int32) (out []int32, err error) {
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out = make([]int32, len(in)*2)
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inpos := cursor.New()
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outpos := cursor.New()
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if err = bp32.New().Compress(in, inpos, len(in), out, outpos); err != nil {
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return nil, err
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}
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return out[:outpos.Get()], nil
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}
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// Uncompress uncompresses in[]int32 to out[]int32
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func Uncompress32(in []int32, buffer []int32) (out []int32, err error) {
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out = buffer
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inpos := cursor.New()
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outpos := cursor.New()
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if err = bp32.New().Uncompress(in, inpos, len(in), out, outpos); err != nil {
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return nil, err
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}
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return out[:outpos.Get()], nil
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}
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