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KMP library for tensors #300

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grinisrit merged 215 commits from feature/tensor-algebra into dev 2021-05-08 09:48:04 +03:00
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1 changed files with 5 additions and 3 deletions
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kmath-core/src/commonMain/kotlin/space/kscience/kmath/tensors/core/BufferedTensor.kt
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@ -34,7 +34,8 @@ public open class BufferedTensor<T>(
public fun vectorSequence(): Sequence<MutableStructure1D<T>> = sequence {
check(shape.size >= 1) {"todo"}
val vectorOffset = linearStructure.strides[0]
val n = shape.size
val vectorOffset = shape[n - 1]
val vectorShape = intArrayOf(shape.last())
for (offset in 0 until numel step vectorOffset) {
val vector = BufferedTensor<T>(vectorShape, buffer, offset).as1D()
@ -44,8 +45,9 @@ public open class BufferedTensor<T>(
public fun matrixSequence(): Sequence<MutableStructure2D<T>> = sequence {
check(shape.size >= 2) {"todo"}
val matrixOffset = linearStructure.strides[1]
val matrixShape = intArrayOf(shape[shape.size - 2], shape.last()) //todo better way?
val n = shape.size
val matrixOffset = shape[n - 1] * shape[n - 2]
val matrixShape = intArrayOf(shape[n - 2], shape[n - 1]) //todo better way?
for (offset in 0 until numel step matrixOffset) {
val matrix = BufferedTensor<T>(matrixShape, buffer, offset).as2D()
yield(matrix)