def alpha_at
import mlbend-generative@0.1.1.0/main.bend as MlbendGenerativeimport Base
128# ᾱ_t of the cosine schedule over `steps` steps (t = 1 .. steps)
129def alpha_at(+t: Nat, +steps: Nat) -> F32:
130 (cos_f(t, steps) / cos_f(0n, steps) : F32)