def prod_cos.go
import unified-nsga-iii@0.2.2.0/problems.bend as Problemsimport Base
import unified-nsga-iii@0.2.2.0/util.bend as Util
284def prod_cos.go(+x: List<&2, F32>, fuel: Nat, +i: Nat, acc: F32) -> F32:
285 match fuel:
286 case 0n:
287 acc
288 case 1n+f:
289 prod_cos.go(
290 x,
291 f,
292 1n+i,
293 F32.mul(acc, F32.cos(F32.mul(Util.get_f32(x, i), half_pi())))
294 )