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Feature: Polynomials and rational functions #469

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lounres merged 132 commits from feature/polynomials into dev 2022-07-28 18:04:06 +03:00
Conversation 19 Commits 132 Files Changed 51 +3 -2
3 changed files with 3 additions and 2 deletions
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2
kmath-functions/src/commonMain/kotlin/space/kscience/kmath/functions/AbstractPolynomial.kt
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@ -295,7 +295,7 @@ public interface AbstractPolynomialSpace<C, P: AbstractPolynomial<C>> : Ring<P>
* If polynomial is a constant polynomial represents and returns it as constant. * If polynomial is a constant polynomial represents and returns it as constant.
* Otherwise, (when the polynomial is not constant polynomial) raises corresponding exception. * Otherwise, (when the polynomial is not constant polynomial) raises corresponding exception.
*/ */
public fun P.asConstant(): C = asConstantOrNull() ?: error("Can not represent non-constant polynomial as a constant") public fun P.asConstant(): C = requireNotNull(asConstantOrNull()) { "Can not represent non-constant polynomial as a constant" }
override fun add(left: P, right: P): P = left + right override fun add(left: P, right: P): P = left + right
override fun multiply(left: P, right: P): P = left * right override fun multiply(left: P, right: P): P = left * right

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kmath-functions/src/commonMain/kotlin/space/kscience/kmath/functions/AbstractRationalFunction.kt
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@ -460,7 +460,7 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
* If polynomial is a constant polynomial represents and returns it as constant. * If polynomial is a constant polynomial represents and returns it as constant.
* Otherwise, (when the polynomial is not constant polynomial) raises corresponding exception. * Otherwise, (when the polynomial is not constant polynomial) raises corresponding exception.
*/ */
public fun P.asConstant(): C = asConstantOrNull() ?: error("Can not represent non-constant polynomial as a constant") public fun P.asConstant(): C = requireNotNull(asConstantOrNull()) { "Can not represent non-constant polynomial as a constant" }
/** /**
* Degree of the polynomial, [see also](https://en.wikipedia.org/wiki/Degree_of_a_polynomial). If the polynomial is * Degree of the polynomial, [see also](https://en.wikipedia.org/wiki/Degree_of_a_polynomial). If the polynomial is

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kmath-functions/src/commonTest/kotlin/space/kscience/kmath/functions/PolynomialUtilTest.kt
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@ -11,6 +11,7 @@ import kotlin.test.Test
import kotlin.test.assertEquals import kotlin.test.assertEquals
import kotlin.test.assertFailsWith import kotlin.test.assertFailsWith
class PolynomialUtilTest { class PolynomialUtilTest {
@Test @Test
fun test_substitute_Double() { fun test_substitute_Double() {