func TestFieldAdd(t *testing.T) { t.Parallel() for _, a := range interestingValues() { for b := range fieldElement(q) { got := fieldAdd(a.m, b) exp := (a.m + b) % q if got != exp { t.Fatalf("%d + %d = %d, expected %d", a, b, got, exp) } } } } func TestFieldSub(t *testing.T) { t.Parallel() for _, a := range interestingValues() { for b := range fieldElement(q) { got := fieldSub(a.m, b) exp := (a.m + q - b) % q if got != exp { t.Fatalf("%d - %d = %d, expected %d", a, b, got, exp) } } } } func TestFieldSubToMontgo(t...