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ratio.go
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ratio.go
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package cachescale
import (
"github.com/Deepchain-foundation/lachesis-base/inter/idx"
)
// Ratio alters the cache sizes proportionally to a ratio
type Ratio struct {
Base uint64
Target uint64
}
var _ Func = (*Ratio)(nil)
// Identity doesn't alter the cache sizes
var Identity = Ratio{1, 1}
func (r Ratio) U64(v uint64) uint64 {
muled := v * r.Target
if muled%r.Base == 0 {
return muled / r.Base
}
return muled/r.Base + 1
}
func (r Ratio) F32(v float32) float32 {
return v * (float32(r.Target) / float32(r.Base))
}
func (r Ratio) F64(v float64) float64 {
return v * (float64(r.Target) / float64(r.Base))
}
func (r Ratio) U(v uint) uint {
return uint(r.U64(uint64(v)))
}
func (r Ratio) U32(v uint32) uint32 {
return uint32(r.U64(uint64(v)))
}
func (r Ratio) I(v int) int {
return int(r.U64(uint64(v)))
}
func (r Ratio) I32(v int32) int32 {
return int32(r.U64(uint64(v)))
}
func (r Ratio) I64(v int64) int64 {
return int64(r.U64(uint64(v)))
}
func (r Ratio) Events(v idx.Event) idx.Event {
return idx.Event(r.U64(uint64(v)))
}
func (r Ratio) Blocks(v idx.Block) idx.Block {
return idx.Block(r.U64(uint64(v)))
}
func (r Ratio) Frames(v idx.Frame) idx.Frame {
return idx.Frame(r.U64(uint64(v)))
}