logsum | R Documentation |
Internal function, logsum (copied from coloc package)
logsum(x)
x |
numeric vector |
This function calculates the log of the sum of the exponentiated logs taking out the max, i.e. insuring that the sum is not Inf
ie, you want sum(x), but have x already stored in logs. log(sum(exp(x))) might fail, but logsum(x) should work.
max(x) + log(sum(exp(x - max(x))))
Claudia Giambartolomei
x <- 1:10 log(sum(x))
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