Package jline.api.pfqn.nc

Class Pfqn_explicit.SignedLse

java.lang.Object

jline.api.pfqn.nc.Pfqn_explicit.SignedLse

Enclosing class:

Pfqn_explicit

public static final class Pfqn_explicit.SignedLse
extends Object

Signed log-sum-exp of S = sum_i s_i exp(l_i): log|S|, sign(S), digits lost.

Public because Pfqn_explicit_ld carries the same closed form as the inner kernel of its own two sums and needs the sign alongside the magnitude.

Field Summary

Fields

Modifier and Type	Field	Description
final double	lossDigits	Decimal digits lost to cancellation.
final double	lS	Logarithm of |S|.
final int	sgn	Sign of S, zero when every term dropped out.

Constructor Summary

Constructors

Constructor	Description
SignedLse(double lS, int sgn, double lossDigits)

Method Summary

Methods inherited from class java.lang.Object

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

Field Details

lS

public final double lS

Logarithm of |S|.

sgn

public final int sgn

Sign of S, zero when every term dropped out.

lossDigits

public final double lossDigits

Decimal digits lost to cancellation.

Constructor Details

SignedLse

public SignedLse(double lS,
 int sgn,
 double lossDigits)