From 049ac896671dded53e4482b1b677b02131ef4d93 Mon Sep 17 00:00:00 2001 From: Alexander Nozik Date: Wed, 30 Sep 2020 12:30:06 +0300 Subject: [PATCH] More informative toString for NDBuffer and Complex --- .../kscience/kmath/operations/ComplexDemo.kt | 6 ++- .../kscience/kmath/operations/Complex.kt | 5 +++ .../kscience/kmath/structures/NDStructure.kt | 38 +++++++++++++------ 3 files changed, 37 insertions(+), 12 deletions(-) diff --git a/examples/src/main/kotlin/kscience/kmath/operations/ComplexDemo.kt b/examples/src/main/kotlin/kscience/kmath/operations/ComplexDemo.kt index 3c97940a8..34b3c9981 100644 --- a/examples/src/main/kotlin/kscience/kmath/operations/ComplexDemo.kt +++ b/examples/src/main/kotlin/kscience/kmath/operations/ComplexDemo.kt @@ -5,15 +5,19 @@ import kscience.kmath.structures.NDField import kscience.kmath.structures.complex fun main() { + // 2d element val element = NDElement.complex(2, 2) { index: IntArray -> Complex(index[0].toDouble() - index[1].toDouble(), index[0].toDouble() + index[1].toDouble()) } + println(element) - val compute = (NDField.complex(8)) { + // 1d element operation + val result = with(NDField.complex(8)) { val a = produce { (it) -> i * it - it.toDouble() } val b = 3 val c = Complex(1.0, 1.0) (a pow b) + c } + println(result) } diff --git a/kmath-core/src/commonMain/kotlin/kscience/kmath/operations/Complex.kt b/kmath-core/src/commonMain/kotlin/kscience/kmath/operations/Complex.kt index 24bfec054..7bd7b6085 100644 --- a/kmath-core/src/commonMain/kotlin/kscience/kmath/operations/Complex.kt +++ b/kmath-core/src/commonMain/kotlin/kscience/kmath/operations/Complex.kt @@ -176,6 +176,11 @@ public data class Complex(val re: Double, val im: Double) : FieldElement { override val objectSize: Int = 16 diff --git a/kmath-core/src/commonMain/kotlin/kscience/kmath/structures/NDStructure.kt b/kmath-core/src/commonMain/kotlin/kscience/kmath/structures/NDStructure.kt index fd679d073..c107ef7cc 100644 --- a/kmath-core/src/commonMain/kotlin/kscience/kmath/structures/NDStructure.kt +++ b/kmath-core/src/commonMain/kotlin/kscience/kmath/structures/NDStructure.kt @@ -70,7 +70,7 @@ public interface NDStructure { public fun build( strides: Strides, bufferFactory: BufferFactory = Buffer.Companion::boxing, - initializer: (IntArray) -> T + initializer: (IntArray) -> T, ): BufferNDStructure = BufferNDStructure(strides, bufferFactory(strides.linearSize) { i -> initializer(strides.index(i)) }) @@ -79,40 +79,40 @@ public interface NDStructure { */ public inline fun auto( strides: Strides, - crossinline initializer: (IntArray) -> T + crossinline initializer: (IntArray) -> T, ): BufferNDStructure = BufferNDStructure(strides, Buffer.auto(strides.linearSize) { i -> initializer(strides.index(i)) }) public inline fun auto( type: KClass, strides: Strides, - crossinline initializer: (IntArray) -> T + crossinline initializer: (IntArray) -> T, ): BufferNDStructure = BufferNDStructure(strides, Buffer.auto(type, strides.linearSize) { i -> initializer(strides.index(i)) }) public fun build( shape: IntArray, bufferFactory: BufferFactory = Buffer.Companion::boxing, - initializer: (IntArray) -> T + initializer: (IntArray) -> T, ): BufferNDStructure = build(DefaultStrides(shape), bufferFactory, initializer) public inline fun auto( shape: IntArray, - crossinline initializer: (IntArray) -> T + crossinline initializer: (IntArray) -> T, ): BufferNDStructure = auto(DefaultStrides(shape), initializer) @JvmName("autoVarArg") public inline fun auto( vararg shape: Int, - crossinline initializer: (IntArray) -> T + crossinline initializer: (IntArray) -> T, ): BufferNDStructure = auto(DefaultStrides(shape), initializer) public inline fun auto( type: KClass, vararg shape: Int, - crossinline initializer: (IntArray) -> T + crossinline initializer: (IntArray) -> T, ): BufferNDStructure = auto(type, DefaultStrides(shape), initializer) } @@ -274,6 +274,22 @@ public abstract class NDBuffer : NDStructure { result = 31 * result + buffer.hashCode() return result } + + override fun toString(): String { + val bufferRepr: String = when (shape.size) { + 1 -> buffer.asSequence().joinToString(prefix = "[", postfix = "]", separator = ", ") + 2 -> (0 until shape[0]).joinToString(prefix = "[", postfix = "]", separator = ", ") { i -> + (0 until shape[1]).joinToString(prefix = "[", postfix = "]", separator = ", ") { j -> + val offset = strides.offset(intArrayOf(i, j)) + buffer[offset].toString() + } + } + else -> "..." + } + return "NDBuffer(shape=${shape.contentToString()}, buffer=$bufferRepr)" + } + + } /** @@ -281,7 +297,7 @@ public abstract class NDBuffer : NDStructure { */ public class BufferNDStructure( override val strides: Strides, - override val buffer: Buffer + override val buffer: Buffer, ) : NDBuffer() { init { if (strides.linearSize != buffer.size) { @@ -295,7 +311,7 @@ public class BufferNDStructure( */ public inline fun NDStructure.mapToBuffer( factory: BufferFactory = Buffer.Companion::auto, - crossinline transform: (T) -> R + crossinline transform: (T) -> R, ): BufferNDStructure { return if (this is BufferNDStructure) BufferNDStructure(this.strides, factory.invoke(strides.linearSize) { transform(buffer[it]) }) @@ -310,7 +326,7 @@ public inline fun NDStructure.mapToBuffer( */ public class MutableBufferNDStructure( override val strides: Strides, - override val buffer: MutableBuffer + override val buffer: MutableBuffer, ) : NDBuffer(), MutableNDStructure { init { @@ -324,7 +340,7 @@ public class MutableBufferNDStructure( public inline fun NDStructure.combine( struct: NDStructure, - crossinline block: (T, T) -> T + crossinline block: (T, T) -> T, ): NDStructure { require(shape.contentEquals(struct.shape)) { "Shape mismatch in structure combination" } return NDStructure.auto(shape) { block(this[it], struct[it]) }