fs/bcachefs/mean_and_variance_test.c

15 	KUNIT_EXPECT_EQ(test, mean_and_variance_get_mean(s), 2);
16 	KUNIT_EXPECT_EQ(test, mean_and_variance_get_variance(s), 0);
17 	KUNIT_EXPECT_EQ(test, s.n, 2);
22 	KUNIT_EXPECT_EQ(test, mean_and_variance_get_mean(s), 3);
23 	KUNIT_EXPECT_EQ(test, mean_and_variance_get_variance(s), 1);
24 	KUNIT_EXPECT_EQ(test, s.n, 4);
37 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 2), 10);
38 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 2), 0);
41 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 2), 12);
42 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 2), 18);
45 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 2), 16);
46 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 2), 72);
51 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 2), -10);
52 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 2), 0);
55 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 2), -12);
56 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 2), 18);
59 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 2), -16);
60 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 2), 72);
74 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 8), 11);
75 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 8), 107);
85 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(s, 8), -11);
86 	KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_variance(s, 8), 107);
107 		KUNIT_EXPECT_EQ(test, mean_and_variance_get_mean(mv),		initial_value);
108 		KUNIT_EXPECT_EQ(test, mean_and_variance_get_stddev(mv),		0);
109 		KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(vw, weight),	initial_value);
110 		KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_stddev(vw, weight),0);
117 		KUNIT_EXPECT_EQ(test, mean_and_variance_get_mean(mv),		mean[i]);
118 		KUNIT_EXPECT_EQ(test, mean_and_variance_get_stddev(mv),		stddev[i]);
119 		KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_mean(vw, weight),	weighted_mean[i]);
120 		KUNIT_EXPECT_EQ(test, mean_and_variance_weighted_get_stddev(vw, weight),weighted_stddev[i]);
123 	KUNIT_EXPECT_EQ(test, mv.n, initial_n + n);
159 		KUNIT_EXPECT_EQ(test, fast_divpow2(i, d), div_u64(i, 1LLU << d));
160 		KUNIT_EXPECT_EQ(test, abs(fast_divpow2(-i, d)), div_u64(i, 1LLU << d));
178 	KUNIT_EXPECT_EQ(test, u128_hi(u128_add(a, a1)), 1);
179 	KUNIT_EXPECT_EQ(test, u128_lo(u128_add(a, a1)), 0);
180 	KUNIT_EXPECT_EQ(test, u128_hi(u128_add(a1, a)), 1);
181 	KUNIT_EXPECT_EQ(test, u128_lo(u128_add(a1, a)), 0);
183 	KUNIT_EXPECT_EQ(test, u128_lo(u128_sub(b, a1)), U64_MAX);
184 	KUNIT_EXPECT_EQ(test, u128_hi(u128_sub(b, a1)), 0);
186 	KUNIT_EXPECT_EQ(test, u128_hi(u128_shl(c, 1)), 1);
187 	KUNIT_EXPECT_EQ(test, u128_lo(u128_shl(c, 1)), 0);
189 	KUNIT_EXPECT_EQ(test, u128_hi(u128_square(U64_MAX)), U64_MAX - 1);
190 	KUNIT_EXPECT_EQ(test, u128_lo(u128_square(U64_MAX)), 1);
192 	KUNIT_EXPECT_EQ(test, u128_lo(u128_div(b, 2)), 1LLU << 63);
194 	KUNIT_EXPECT_EQ(test, u128_hi(u128_div(c2, 2)), U64_MAX >> 1);
195 	KUNIT_EXPECT_EQ(test, u128_lo(u128_div(c2, 2)), U64_MAX);
197 	KUNIT_EXPECT_EQ(test, u128_hi(u128_div(u128_shl(u64_to_u128(U64_MAX), 32), 2)), U32_MAX >> 1);
198 	KUNIT_EXPECT_EQ(test, u128_lo(u128_div(u128_shl(u64_to_u128(U64_MAX), 32), 2)), U64_MAX << 31);