35 lines
1.5 KiB
Kotlin
35 lines
1.5 KiB
Kotlin
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package scientifik.kmath.nd4j
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import org.nd4j.linalg.api.ndarray.INDArray
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import scientifik.kmath.structures.NDStructure
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interface INDArrayStructureBase<T> : NDStructure<T> {
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val ndArray: INDArray
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override val shape: IntArray
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get() = narrowToIntArray(ndArray.shape())
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fun elementsIterator(): Iterator<Pair<IntArray, T>>
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override fun elements(): Sequence<Pair<IntArray, T>> = Sequence { elementsIterator() }
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}
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data class INDArrayIntStructure(override val ndArray: INDArray) : INDArrayStructureBase<Int> {
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override fun elementsIterator(): Iterator<Pair<IntArray, Int>> = INDArrayIntIterator(ndArray)
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override fun get(index: IntArray): Int = ndArray.getInt(*index)
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}
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data class INDArrayLongStructure(override val ndArray: INDArray) : INDArrayStructureBase<Long> {
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override fun elementsIterator(): Iterator<Pair<IntArray, Long>> = INDArrayLongIterator(ndArray)
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override fun get(index: IntArray): Long = ndArray.getLong(*widenToLongArray(index))
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}
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data class INDArrayDoubleStructure(override val ndArray: INDArray) : INDArrayStructureBase<Double> {
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override fun elementsIterator(): Iterator<Pair<IntArray, Double>> = INDArrayDoubleIterator(ndArray)
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override fun get(index: IntArray): Double = ndArray.getDouble(*index)
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}
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data class INDArrayFloatStructure(override val ndArray: INDArray) : INDArrayStructureBase<Float> {
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override fun elementsIterator(): Iterator<Pair<IntArray, Float>> = INDArrayFloatIterator(ndArray)
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override fun get(index: IntArray): Float = ndArray.getFloat(*index)
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}
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