Package de.tilman_neumann.jml.hyperbolic

Class ArcCosH

java.lang.Object

de.tilman_neumann.jml.hyperbolic.ArcCosH

public class ArcCosH
extends Object

Inverse hyperbolic cosinus function.

Author:

Tilman Neumann

Constructor Summary

Constructors

Constructor	Description
ArcCosH()

Method Summary

Modifier and Type	Method	Description
static BigDecimal	acosh1(BigDecimal x, Scale scale)	Computes the "++" branch of acosh(x) = + ln(x + sqrt(x^2-1)).
static BigDecimal	acoshAbs(BigDecimal x, Scale scale)	The absolute value of acosh(x) implemented by ln() formula.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArcCosH

public ArcCosH()

Method Detail

acoshAbs

public static BigDecimal acoshAbs(BigDecimal x,
                                  Scale scale)

The absolute value of acosh(x) implemented by ln() formula.

Parameters:

x - real argument >= 1

scale - wanted accuracy in after-comma digits

Returns:

positive value acosh(x), the negation is the second solution

acosh1

public static BigDecimal acosh1(BigDecimal x,
                                Scale scale)

Computes the "++" branch of acosh(x) = + ln(x + sqrt(x^2-1)).

Parameters:

x - real argument >= 1

scale -

Returns:

"++" branch of acosh(x)