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Examples for type-safe dimensions

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Alexander Nozik 2019-12-09 19:57:26 +03:00
parent 09f2f37780
commit 169801060b
2 changed files with 6 additions and 4 deletions
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README.md
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@ -40,6 +40,8 @@ can be used for a wide variety of purposes from high performance calculations to
* **Streaming** Streaming operations on mathematical objects and objects buffers.
* **Type-safe dimensions** Type-safe dimensions for matrix operations.
* **Commons-math wrapper** It is planned to gradually wrap most parts of [Apache commons-math](http://commons.apache.org/proper/commons-math/)
library in Kotlin code and maybe rewrite some parts to better suit the Kotlin programming paradigm, however there is no fixed roadmap for that. Feel free
to submit a feature request if you want something to be done first.

8
examples/src/main/kotlin/scientifik/kmath/structures/typeSafeDimensions.kt
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@ -14,14 +14,14 @@ fun DMatrixContext<Double, RealField>.simple() {
m1.transpose() + m2
}
object D5: Dimension{
object D5 : Dimension {
override val dim: UInt = 5u
}
fun DMatrixContext<Double, RealField>.custom() {
val m1 = produce<D2, D5> { i, j -> (i+j).toDouble() }
val m2 = produce<D5,D2> { i, j -> (i-j).toDouble() }
val m3 = produce<D2,D2> { i, j -> (i-j).toDouble() }
val m1 = produce<D2, D5> { i, j -> (i + j).toDouble() }
val m2 = produce<D5, D2> { i, j -> (i - j).toDouble() }
val m3 = produce<D2, D2> { i, j -> (i - j).toDouble() }
(m1 dot m2) + m3
}