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## Elixir Cross Referencer

 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57``` ```/* SPDX-License-Identifier: GPL-2.0-only */ #include #include struct rational_test_param { unsigned long num, den; unsigned long max_num, max_den; unsigned long exp_num, exp_den; }; static const struct rational_test_param test_params[] = { /* Exceeds bounds, semi-convergent term > half last term */ { 1230, 10, 100, 20, 100, 1}, /* Exceeds bounds, semi-convergent term < half last term */ { 34567, 100, 120, 20, 120, 1}, /* Closest to zero */ { 1, 30, 100, 10, 0, 1}, /* Closest to smallest non-zero */ { 1, 19, 100, 10, 1, 10}, /* Exact answer */ { 1155, 7735, 255, 255, 33, 221}, /* Convergent */ { 27, 32, 16, 16, 11, 13}, /* Convergent, semiconvergent term half convergent term */ { 67, 54, 17, 18, 5, 4}, /* Semiconvergent, semiconvergent term half convergent term */ { 453, 182, 60, 60, 57, 23}, /* Semiconvergent, numerator limit */ { 87, 32, 70, 32, 68, 25}, /* Semiconvergent, demominator limit */ { 14533, 4626, 15000, 2400, 7433, 2366}, }; static void test_rational(void **state) { int i; unsigned long num = 0, den = 0; for (i = 0; i < ARRAY_SIZE(test_params); i++) { rational_best_approximation(test_params[i].num, test_params[i].den, test_params[i].max_num, test_params[i].max_den, &num, &den); assert_int_equal(num, test_params[i].exp_num); assert_int_equal(den, test_params[i].exp_den); } } int main(void) { const struct CMUnitTest tests[] = { cmocka_unit_test(test_rational), }; return cb_run_group_tests(tests, NULL, NULL); } ```