diff options
| author | Adi Nata <adinata.softwareengineer@gmail.com> | 2026-06-06 11:03:09 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-08-03 21:10:07 -0700 |
| commit | a0275efa65ca8deff937729c5d2982a980f9affe (patch) | |
| tree | c20ac0b02b52402ec56638218e2c97c06b986bfa /lib/Kconfig.debug | |
| parent | 571999ccd1224d7a629f2592887750e381c665b3 (diff) | |
lib/math: add KUnit test suite for polynomial_calc()
Add a KUnit test suite for the polynomial_calc() function, which had no
in-kernel test coverage. The tests verify correct evaluation of constant,
linear, quadratic, and cubic polynomials, including negative coefficients,
negative input data, zero-coefficient terms.
The Kconfig entry uses 'select POLYNOMIAL' rather than 'depends on
POLYNOMIAL' because POLYNOMIAL is a promptless tristate that cannot
be manually enabled on UML without an explicit selector.
Link: https://lore.kernel.org/20260606030319.316752-1-adinata.softwareengineer@gmail.com
Signed-off-by: Adi Nata <adinata.softwareengineer@gmail.com>
Cc: Maxim Kaurkin <maxim.kaurkin@baikalelectronics.ru>
Cc: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <david@davidgow.net>
Cc: Rae Moar <raemoar63@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1244dcac2294..311b99790416 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -3504,6 +3504,23 @@ config GCD_KUNIT_TEST If unsure, say N +config POLYNOMIAL_KUNIT_TEST + tristate "Polynomial calculation (polynomial_calc) test" if !KUNIT_ALL_TESTS + depends on KUNIT + select POLYNOMIAL + default KUNIT_ALL_TESTS + help + This option enables the KUnit test suite for the polynomial_calc() + function, which evaluates integer polynomials using factor + redistribution to avoid overflow. + + The test suite verifies correctness for constant, linear, and + quadratic polynomials, negative coefficients, per-step dividers, + divider_leftover, total_divider scaling, and a real sensor + N-to-temperature conversion polynomial. + + If unsure, say N + config PRIME_NUMBERS_KUNIT_TEST tristate "Prime number generator test" if !KUNIT_ALL_TESTS depends on KUNIT |