SKIP: FAILED fn frexp_2a171c() { var arg_1 : vec2; var res : vec2 = frexp(vec2(), &(arg_1)); } [[stage(vertex)]] fn vertex_main() { frexp_2a171c(); } [[stage(fragment)]] fn fragment_main() { frexp_2a171c(); } [[stage(compute)]] fn compute_main() { frexp_2a171c(); } Failed to generate: error: Unknown builtin method: frexp