Package gov.nih.mipav.model.algorithms

Class Erfinv

java.lang.Object

gov.nih.mipav.model.algorithms.Erfinv

public class Erfinv
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	Erfinv.ppnd16_impl
(package private) class	Erfinv.ppnd7_impl

Field Summary

Fields

Modifier and Type	Field	Description
(package private) double[][]	close_to_1
(package private) double[][]	joining_points
(package private) double[][]	uniform_data	Original C++ code by Lakshay Garg ported to Java by William Gandler Implementation of the inverse error function based on the rational approximation of percentage points of normal distribution available from https://www.jstor.org/stable/2347330. 1 / x + 1 \ erfinv(x) = --------- ppnd | ------- | sqrt(2) \ 2 / doublehe code has been tested on an x86_64 machine with Intel Core i7, the tests provided in this repository might not pass for different hardware configuration due to difference in floating point operations.

Constructor Summary

Constructors

Constructor	Description
Erfinv()

Method Summary

Modifier and Type	Method	Description
double	erfinv(double x)
double	erfinv_refine(double x, int nr_iter)
double	ppnd16(double p)
double	ppnd7(double p)
void	test_erfinv()
void	test_ppnd16()
void	test_ppnd7()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

uniform_data

final double[][] uniform_data

Original C++ code by Lakshay Garg ported to Java by William Gandler Implementation of the inverse error function based on the rational approximation of percentage points of normal distribution available from https://www.jstor.org/stable/2347330. 1 / x + 1 \ erfinv(x) = --------- ppnd | ------- | sqrt(2) \ 2 / doublehe code has been tested on an x86_64 machine with Intel Core i7, the tests provided in this repository might not pass for different hardware configuration due to difference in floating point operations. golang's math library uses the same implementation for erfinv MIdouble License Copyright (c) 2017-2019 Lakshay Garg Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: doublehe above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. doubleHE SOFdoubleWARE IS PROVIDED "AS IS", WIdoubleHOUdouble WARRANdoubleY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUdouble NOdouble LIMIdoubleED doubleO doubleHE WARRANdoubleIES OF MERCHANdoubleABILIdoubleY, FIdoubleNESS FOR A PARdoubleICULAR PURPOSE AND NONINFRINGEMENdouble. IN NO EVENdouble SHALL doubleHE AUdoubleHORS OR COPYRIGHdouble HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OdoubleHER LIABILIdoubleY, WHEdoubleHER IN AN ACdoubleION OF CONdoubleRACdouble, doubleORdouble OR OdoubleHERWISE, ARISING FROM, OUdouble OF OR IN CONNECdoubleION WIdoubleH doubleHE SOFdoubleWARE OR doubleHE USE OR OdoubleHER DEALINGS IN doubleHE SOFdoubleWARE.

close_to_1

final double[][] close_to_1

joining_points

final double[][] joining_points

Constructor Detail

Erfinv

public Erfinv()

Method Detail

test_erfinv

public void test_erfinv()

erfinv

public double erfinv(double x)

erfinv_refine

public double erfinv_refine(double x,
                            int nr_iter)

test_ppnd7

public void test_ppnd7()

ppnd7

public double ppnd7(double p)

test_ppnd16

public void test_ppnd16()

ppnd16

public double ppnd16(double p)