kstats-core/org.oremif.kstats.core

Package-level declarations

Types

ConfidenceInterval

data class ConfidenceInterval(val lower: Double, val upper: Double)

A confidence interval with a lower and upper bound.

Properties

EULER_MASCHERONI

const val EULER_MASCHERONI: Double = 0.5772156649015329

The Euler-Mascheroni constant, approximately 0.5772.

Functions

fun beta(a: Double, b: Double): Double

Computes the beta function for parameters a and b.

fun digamma(x: Double): Double

Computes the digamma (psi) function at x.

fun erf(x: Double): Double

Computes the error function at x.

fun erfc(x: Double): Double

Computes the complementary error function at x, equal to 1 - erf(x).

fun erfcInv(y: Double): Double

Computes the inverse complementary error function at y.

fun erfInv(x: Double): Double

Computes the inverse error function at x.

fun findQuantile(p: Double, cdf: (Double) -> Double, pdf: (Double) -> Double, initialGuess: Double, lowerBound: Double = Double.NEGATIVE_INFINITY, upperBound: Double = Double.POSITIVE_INFINITY): Double

Finds the quantile value x such that cdf(x) = p, using Newton-Raphson with bisection fallback.

fun gamma(x: Double): Double

Computes the gamma function at x.

fun gcd(a: Long, b: Long): Long

Computes the greatest common divisor of two integers using the Euclidean algorithm.

generalizedHarmonic

fun generalizedHarmonic(n: Int, s: Double): Double

Computes the generalized harmonic number H(n, s) = Σ_{i=1}^{n} 1/i^s.

fun lcm(a: Long, b: Long): Long

Computes the least common multiple of two integers.

fun lnBeta(a: Double, b: Double): Double

Computes the natural logarithm of the beta function for parameters a and b.

fun lnCombination(n: Int, k: Int): Double

Computes the natural logarithm of the binomial coefficient "n choose k".

fun lnFactorial(n: Int): Double

Computes the natural logarithm of n factorial.

fun lnGamma(x: Double): Double

Computes the natural logarithm of the gamma function at x.

fun lnPermutation(n: Int, k: Int): Double

Computes the natural logarithm of the number of k-permutations of n items.

regularizedBeta

fun regularizedBeta(x: Double, a: Double, b: Double): Double

Computes the regularized incomplete beta function I(x; a, b) at point x.

regularizedGammaP

fun regularizedGammaP(a: Double, x: Double): Double

Computes the lower regularized incomplete gamma function P(a, x).

regularizedGammaQ

fun regularizedGammaQ(a: Double, x: Double): Double

Computes the upper regularized incomplete gamma function Q(a, x), the complement of regularizedGammaP.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

expect fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator backed by the Web Crypto API.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

actual fun secureRandom(): Random

Returns a cryptographically secure random number generator for the current platform.

fun trigamma(x: Double): Double

Computes the trigamma function at x.