Created
November 1, 2016 05:59
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buffer for double
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| /** | |
| buffer for double | |
| */ | |
| type DoubleBuffer struct { | |
| index int32 | |
| buffer []float64 | |
| isFull bool | |
| } | |
| func NewDoubleBuffer(size int32) *DoubleBuffer { | |
| return &DoubleBuffer{ | |
| buffer:make([]float64, size), | |
| } | |
| } | |
| func (b *DoubleBuffer) Reset() { | |
| b.index = 0 | |
| b.isFull = false | |
| } | |
| func (b *DoubleBuffer) IsFull() bool { | |
| return b.isFull | |
| } | |
| func (b *DoubleBuffer) GetAverage() float64 { | |
| entriesNum := 0 | |
| if b.isFull { | |
| entriesNum = len(b.buffer) | |
| } else { | |
| entriesNum = int(b.index) | |
| } | |
| if entriesNum == 0 { | |
| return 0 | |
| } | |
| sum := 0.0 | |
| for i := 0; i < entriesNum; i++ { | |
| sum += b.buffer[i] | |
| } | |
| return sum / float64(entriesNum) | |
| } | |
| func (b *DoubleBuffer) Put(v float64) { | |
| if int32(len(b.buffer)) == b.index { | |
| b.index = 0 | |
| } | |
| b.buffer[b.index] = v | |
| b.index++ | |
| if b.index == int32(len(b.buffer)) { | |
| b.isFull = true | |
| } | |
| } | |
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