t.Fatalf("unexpected LCM: got %s, want %s", got, LCM) } }) default: t.Fatalf("unknown key %q on line %d", k, lineNum) } } if err := scanner.Err(); err != nil { t.Fatal(err) } } func oddDivisorLargerThan(b []byte) bool { x := new(big.Int).SetBytes(b) x.Rsh(x, x.TrailingZeroBits()) return x.BitLen() > 32 } func addOne(b []byte) []byte { x := new(big.Int).SetBytes(b) x.Add(x, big.NewInt(1)) return x.Bytes() } func decodeHex(t *testing.T, s string) []byte { t.Helper() if len(s)%2 != 0 { s = "0" + s } b, err := hex.DecodeString(s)...