trustOptim (version 0.8.1)

log_inv.logit: log of inverse logit function

Description

Returns the log inverse logit of x.

Usage

log_inv.logit(x)

Arguments

x

a scalar, vector or matrix.

Value

• result = log[exp(x) / (1+exp(x))]

Details

Intended to be a numerically stable alternative to just doing log(inv.logit(x)). Should be less sensitive to overflow and underflow with very large or very small x.