CHANGELOG.md

@@ -15,6 +15,7 @@
 - `Fitting` utility object in prob/stat
 - ND4J support module submitting `NDStructure` and `NDAlgebra` over `INDArray`.
 - Coroutine-deterministic Monte-Carlo scope with a random number generator.
+- Some minor utilities to `kmath-for-real`.
 
 ### Changed
 - Package changed from `scientifik` to `kscience.kmath`.
@@ -25,12 +26,14 @@
 - `kmath-ast` doesn't depend on heavy `kotlin-reflect` library.
 - Full autodiff refactoring based on `Symbol`
 - `kmath-prob` renamed to `kmath-stat`
+- Grid generators moved to `kmath-for-real`
 
 ### Deprecated
 
 ### Removed
 - `kmath-koma` module because it doesn't support Kotlin 1.4.
 - Support of `legacy` JS backend (we will support only IR)
+- `toGrid` method.
 
 ### Fixed
 - `symbol` method in `MstExtendedField` (https://github.com/mipt-npm/kmath/pull/140)

build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
     id("ru.mipt.npm.project")
 }
 
-internal val kmathVersion: String by extra("0.2.0-dev-3")
+internal val kmathVersion: String by extra("0.2.0-dev-4")
 internal val bintrayRepo: String by extra("kscience")
 internal val githubProject: String by extra("kmath")
 

kmath-core/src/commonMain/kotlin/kscience/kmath/structures/RealBuffer.kt

@@ -5,19 +5,19 @@ package kscience.kmath.structures
  *
  * @property array the underlying array.
  */
+@Suppress("OVERRIDE_BY_INLINE")
 public inline class RealBuffer(public val array: DoubleArray) : MutableBuffer<Double> {
     override val size: Int get() = array.size
 
-    override operator fun get(index: Int): Double = array[index]
+    override inline operator fun get(index: Int): Double = array[index]
 
-    override operator fun set(index: Int, value: Double) {
+    override inline operator fun set(index: Int, value: Double) {
         array[index] = value
     }
 
     override operator fun iterator(): DoubleIterator = array.iterator()
 
-    override fun copy(): MutableBuffer<Double> =
-        RealBuffer(array.copyOf())
+    override fun copy(): RealBuffer = RealBuffer(array.copyOf())
 }
 
 /**
@@ -34,6 +34,11 @@ public inline fun RealBuffer(size: Int, init: (Int) -> Double): RealBuffer = Rea
  */
 public fun RealBuffer(vararg doubles: Double): RealBuffer = RealBuffer(doubles)
 
+/**
+ * Simplified [RealBuffer] to array comparison
+ */
+public fun RealBuffer.contentEquals(vararg doubles: Double): Boolean = array.contentEquals(doubles)
+
 /**
  * Returns a [DoubleArray] containing all of the elements of this [MutableBuffer].
  */

kmath-for-real/src/commonMain/kotlin/kscience/kmath/real/RealVector.kt

@@ -14,8 +14,9 @@ import kotlin.math.sqrt
 
 public typealias RealPoint = Point<Double>
 
-public fun DoubleArray.asVector(): RealVector = RealVector(asBuffer())
-public fun List<Double>.asVector(): RealVector = RealVector(asBuffer())
+public fun RealPoint.asVector(): RealVector = RealVector(this)
+public fun DoubleArray.asVector(): RealVector = asBuffer().asVector()
+public fun List<Double>.asVector(): RealVector = asBuffer().asVector()
 
 public object VectorL2Norm : Norm<Point<out Number>, Double> {
     override fun norm(arg: Point<out Number>): Double = sqrt(arg.asIterable().sumByDouble(Number::toDouble))

kmath-for-real/src/commonMain/kotlin/kscience/kmath/real/grids.kt

@@ -1,5 +1,7 @@
-package kscience.kmath.misc
+package kscience.kmath.real
 
+import kscience.kmath.linear.Point
+import kscience.kmath.structures.asBuffer
 import kotlin.math.abs
 
 /**
@@ -32,6 +34,9 @@ public fun ClosedFloatingPointRange<Double>.toSequenceWithStep(step: Double): Se
     }
 }
 
+public infix fun ClosedFloatingPointRange<Double>.step(step: Double): Point<Double> =
+    toSequenceWithStep(step).toList().asBuffer()
+
 /**
  * Convert double range to sequence with the fixed number of points
  */
@@ -39,12 +44,3 @@ public fun ClosedFloatingPointRange<Double>.toSequenceWithPoints(numPoints: Int)
     require(numPoints > 1) { "The number of points should be more than 2" }
     return toSequenceWithStep(abs(endInclusive - start) / (numPoints - 1))
 }
-
-/**
- * Convert double range to array of evenly spaced doubles, where the size of array equals [numPoints]
- */
-@Deprecated("Replace by 'toSequenceWithPoints'")
-public fun ClosedFloatingPointRange<Double>.toGrid(numPoints: Int): DoubleArray {
-    require(numPoints >= 2) { "Can't create generic grid with less than two points" }
-    return DoubleArray(numPoints) { i -> start + (endInclusive - start) / (numPoints - 1) * i }
-}

kmath-for-real/src/commonMain/kotlin/kscience/kmath/real/realBuffer.kt

@@ -1,8 +0,0 @@
-package kscience.kmath.real
-
-import kscience.kmath.structures.RealBuffer
-
-/**
- * Simplified [RealBuffer] to array comparison
- */
-public fun RealBuffer.contentEquals(vararg doubles: Double): Boolean = array.contentEquals(doubles)

kmath-for-real/src/commonTest/kotlin/kaceince/kmath/real/GridTest.kt

@@ -0,0 +1,13 @@
+package kaceince.kmath.real
+
+import kscience.kmath.real.step
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class GridTest {
+    @Test
+    fun testStepGrid(){
+        val grid = 0.0..1.0 step 0.2
+        assertEquals(6, grid.size)
+    }
+}

kmath-for-real/src/commonTest/kotlin/kaceince/kmath/real/RealMatrixTest.kt

@@ -1,9 +1,10 @@
-package scientific.kmath.real
+package kaceince.kmath.real
 
 import kscience.kmath.linear.VirtualMatrix
 import kscience.kmath.linear.build
 import kscience.kmath.real.*
 import kscience.kmath.structures.Matrix
+import kscience.kmath.structures.contentEquals
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue

kmath-for-real/src/commonTest/kotlin/kaceince/kmath/real/RealVectorTest.kt

@@ -1,11 +1,14 @@
-package kscience.kmath.linear
+package kaceince.kmath.real
 
+import kscience.kmath.linear.MatrixContext
+import kscience.kmath.linear.asMatrix
+import kscience.kmath.linear.transpose
 import kscience.kmath.operations.invoke
 import kscience.kmath.real.RealVector
 import kotlin.test.Test
 import kotlin.test.assertEquals
 
-internal class VectorTest {
+internal class RealVectorTest {
     @Test
     fun testSum() {
         val vector1 = RealVector(5) { it.toDouble() }

settings.gradle.kts

@@ -8,8 +8,8 @@ pluginManagement {
         maven("https://dl.bintray.com/kotlin/kotlinx")
     }
 
-    val toolsVersion = "0.6.4-dev-1.4.20-M2"
-    val kotlinVersion = "1.4.20-M2"
+    val toolsVersion = "0.7.0"
+    val kotlinVersion = "1.4.20"
 
     plugins {
         id("kotlinx.benchmark") version "0.2.0-dev-20"
@@ -17,7 +17,7 @@ pluginManagement {
         id("ru.mipt.npm.mpp") version toolsVersion
         id("ru.mipt.npm.jvm") version toolsVersion
         id("ru.mipt.npm.publish") version toolsVersion
-        kotlin("jvm")  version kotlinVersion
+        kotlin("jvm") version kotlinVersion
         kotlin("plugin.allopen") version kotlinVersion
     }
 }