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returning cols/rows as vectors

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This commit is contained in:
Roland Grinis 2021-03-26 15:06:05 +00:00
parent 9162867fc2
commit a6354623ec
3 changed files with 24 additions and 4 deletions
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5
kmath-core/api/kmath-core.api
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@ -2768,6 +2768,11 @@ public abstract interface class space/kscience/kmath/tensors/TensorPartialDivisi
public abstract fun variance (Lspace/kscience/kmath/nd/MutableStructureND;IZZ)Lspace/kscience/kmath/nd/MutableStructureND;
}
public final class space/kscience/kmath/tensors/TensorPartialDivisionAlgebra$DefaultImpls {
public static synthetic fun mean$default (Lspace/kscience/kmath/tensors/TensorPartialDivisionAlgebra;Lspace/kscience/kmath/nd/MutableStructureND;IZILjava/lang/Object;)Lspace/kscience/kmath/nd/MutableStructureND;
public static synthetic fun variance$default (Lspace/kscience/kmath/tensors/TensorPartialDivisionAlgebra;Lspace/kscience/kmath/nd/MutableStructureND;IZZILjava/lang/Object;)Lspace/kscience/kmath/nd/MutableStructureND;
}
public final class space/kscience/kmath/tensors/core/BroadcastDoubleTensorAlgebra : space/kscience/kmath/tensors/core/DoubleTensorAlgebra {
public fun <init> ()V
public synthetic fun div (Lspace/kscience/kmath/nd/MutableStructureND;Lspace/kscience/kmath/nd/MutableStructureND;)Lspace/kscience/kmath/nd/MutableStructureND;

15
kmath-core/src/commonMain/kotlin/space/kscience/kmath/nd/Structure1D.kt
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@ -71,6 +71,21 @@ private inline class Buffer1DWrapper<T>(val buffer: Buffer<T>) : Structure1D<T>
override operator fun get(index: Int): T = buffer[index]
}
internal inline class MutableBuffer1DWrapper<T>(val buffer: MutableBuffer<T>) : MutableStructure1D<T> {
override val shape: IntArray get() = intArrayOf(buffer.size)
override val size: Int get() = buffer.size
override fun elements(): Sequence<Pair<IntArray, T>> =
buffer.asSequence().mapIndexed { index, value -> intArrayOf(index) to value }
override operator fun get(index: Int): T = buffer[index]
override fun set(index: Int, value: T) {
buffer[index] = value
}
override fun copy(): MutableBuffer<T> = buffer.copy()
}
/**
* Represent a [StructureND] as [Structure1D]. Throw error in case of dimension mismatch
*/

8
kmath-core/src/commonMain/kotlin/space/kscience/kmath/nd/Structure2D.kt
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@ -75,14 +75,14 @@ public interface MutableStructure2D<T> : Structure2D<T>, MutableStructureND<T> {
/**
* The buffer of rows of this structure. It gets elements from the structure dynamically.
*/
override val rows: List<MutableBuffer<T>>
get() = List(rowNum) { i -> VirtualMutableBuffer(colNum) { j -> get(i, j) } }
override val rows: List<MutableStructure1D<T>>
get() = List(rowNum) { i -> MutableBuffer1DWrapper(VirtualMutableBuffer(colNum) { j -> get(i, j) })}
/**
* The buffer of columns of this structure. It gets elements from the structure dynamically.
*/
override val columns: List<MutableBuffer<T>>
get() = List(colNum) { j -> VirtualMutableBuffer(rowNum) { i -> get(i, j) } }
override val columns: List<MutableStructure1D<T>>
get() = List(colNum) { j -> MutableBuffer1DWrapper(VirtualMutableBuffer(rowNum) { i -> get(i, j) }) }
}
/**