Logarithm of cosh
Compute log(cosh(x)) without floating overflow or underflow
logcosh(x)
x |
a numeric vector or matrix. |
The computation uses asymptotic expressions for very large or very small arguments.
For intermediate arguments, log(cosh(x)) is returned.
Numeric vector or matrix of same dimensions as x.
Gordon K Smyth
x <- c(1e-8,1e-7,1e-6,1e-5,1e-4,1,3,50,800) logcosh(x) log(cosh(x))
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