logdiff

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Description

Internal function, logdiff

Usage

1
  logdiff(x, y)

Arguments

x

numeric

y

numeric

Details

This function calculates the log of the difference of the exponentiated logs taking out the max, i.e. insuring that the difference is not negative

Value

max(x) + log(exp(x - max(x,y)) - exp(y-max(x,y)))

Author(s)

Chris Wallace