Generate a lookup table for an arbitrary plaintext function

Computes f(0:(p-1), p) and returns it as a numeric vector suitable for eval_func(). This is the R-side analogue of OpenFHE's GenerateLUTviaFunction — we don't bind the C++ helper because its signature takes a raw function pointer that can't capture an R closure, and R is natively vectorised so a pure-R helper is both simpler and faster than wiring an R callback through cpp11.

Usage

generate_lut_via_function(f, p)

Arguments

f

A function function(m, p) that returns the table entry for input m under plaintext modulus p. Vectorised functions are supported.

p

The plaintext modulus (typically get_max_plaintext_space(ctx))

Value

A length-p numeric vector of LUT entries