From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- lib/math/rational-test.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 lib/math/rational-test.c (limited to 'lib/math/rational-test.c') diff --git a/lib/math/rational-test.c b/lib/math/rational-test.c new file mode 100644 index 0000000000..01611ddff4 --- /dev/null +++ b/lib/math/rational-test.c @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +#include + +struct rational_test_param { + unsigned long num, den; + unsigned long max_num, max_den; + unsigned long exp_num, exp_den; + + const char *name; +}; + +static const struct rational_test_param test_parameters[] = { + { 1230, 10, 100, 20, 100, 1, "Exceeds bounds, semi-convergent term > 1/2 last term" }, + { 34567,100, 120, 20, 120, 1, "Exceeds bounds, semi-convergent term < 1/2 last term" }, + { 1, 30, 100, 10, 0, 1, "Closest to zero" }, + { 1, 19, 100, 10, 1, 10, "Closest to smallest non-zero" }, + { 27,32, 16, 16, 11, 13, "Use convergent" }, + { 1155, 7735, 255, 255, 33, 221, "Exact answer" }, + { 87, 32, 70, 32, 68, 25, "Semiconvergent, numerator limit" }, + { 14533, 4626, 15000, 2400, 7433, 2366, "Semiconvergent, denominator limit" }, +}; + +static void get_desc(const struct rational_test_param *param, char *desc) +{ + strscpy(desc, param->name, KUNIT_PARAM_DESC_SIZE); +} + +/* Creates function rational_gen_params */ +KUNIT_ARRAY_PARAM(rational, test_parameters, get_desc); + +static void rational_test(struct kunit *test) +{ + const struct rational_test_param *param = (const struct rational_test_param *)test->param_value; + unsigned long n = 0, d = 0; + + rational_best_approximation(param->num, param->den, param->max_num, param->max_den, &n, &d); + KUNIT_EXPECT_EQ(test, n, param->exp_num); + KUNIT_EXPECT_EQ(test, d, param->exp_den); +} + +static struct kunit_case rational_test_cases[] = { + KUNIT_CASE_PARAM(rational_test, rational_gen_params), + {} +}; + +static struct kunit_suite rational_test_suite = { + .name = "rational", + .test_cases = rational_test_cases, +}; + +kunit_test_suites(&rational_test_suite); + +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3