kmath/kmath-jafama/README.md
2021-07-29 07:16:26 +07:00

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# Module kmath-jafama
Integration with [Jafama](https://github.com/jeffhain/jafama).
- [jafama-double](src/main/kotlin/space/kscience/kmath/jafama/) : Double ExtendedField implementations based on Jafama
## Artifact:
The Maven coordinates of this project are `space.kscience:kmath-jafama:0.3.0-dev-14`.
**Gradle:**
```gradle
repositories {
maven { url 'https://repo.kotlin.link' }
mavenCentral()
}
dependencies {
implementation 'space.kscience:kmath-jafama:0.3.0-dev-14'
}
```
**Gradle Kotlin DSL:**
```kotlin
repositories {
maven("https://repo.kotlin.link")
mavenCentral()
}
dependencies {
implementation("space.kscience:kmath-jafama:0.3.0-dev-14")
}
```
## Example usage
All the `DoubleField` uses can be replaced with `JafamaDoubleField` or `StrictJafamaDoubleField`.
```kotlin
import space.kscience.kmath.jafama.*
import space.kscience.kmath.operations.*
fun main() {
val a = 2.0
val b = StrictJafamaDoubleField { exp(a) }
println(JafamaDoubleField { b + a })
println(StrictJafamaDoubleField { ln(b) })
}
```
## Performance
According to KMath benchmarks on GraalVM, Jafama functions are slower than JDK math; however, there are indications that on Hotspot Jafama is a bit faster.
> **Can't find appropriate benchmark data. Try generating readme files after running benchmarks**.