Transform to upper-bounded interval

Maps unconstrained values to (-∞, upper). Equivalent to upper - positive(x).

Usage

upper_bounded(x, upper)

Arguments

x

Unconstrained value

upper

Upper bound

Value

Value < upper

Details

The transformation is: upper_bounded(x, b) = b - exp(x)

Examples

if (FALSE) { # \dontrun{
# Parameter < 10
raw <- val(0)
param <- upper_bounded(raw, 10)  # 10 - exp(0) = 9
} # }