forked from kscience/kmath
added shiftOperartion and diff
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@ -199,12 +199,25 @@ public open class SeriesAlgebra<T, out A : Ring<T>, out BA : BufferAlgebra<T, A>
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}
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}
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/**
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* Zip buffer with itself, but shifted
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* */
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public inline fun Buffer<T>.shiftOp(
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shift: Int = 1,
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crossinline operation: A.(left: T, right: T) -> T
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): Buffer<T> {
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val shifted = this.moveTo(this.startOffset+shift)
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return zip(shifted, operation)
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}
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override fun Buffer<T>.unaryMinus(): Buffer<T> = map { -it }
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override fun add(left: Buffer<T>, right: Buffer<T>): Series<T> = left.zip(right) { l, r -> l + r }
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override fun multiply(left: Buffer<T>, right: Buffer<T>): Buffer<T> = left.zip(right) { l, r -> l * r }
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public inline fun Buffer<T>.diff(): Buffer<T> = this.shiftOp {l, r -> r - l}
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public companion object
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}
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