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linux/lib/test-kstrtox.c
T
Rodrigo Alencar 467e641415 lib: test-kstrtox: tests for kstrtodec64() and kstrtoudec64() 
Add tests for decimal parsing helpers kstrtodec64() and kstrtoudec64().
The test infrastructure is reused from other kstrto*() functions, i.e.,
the decimal parsers have fixed base of 10, so base field is used as
scale input for the helpers.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2026-06-30 00:15:52 +01:00

925 lines
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#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#define for_each_test(i, test) \
for (i = 0; i < ARRAY_SIZE(test); i++)
struct test_fail {
const char *str;
unsigned int base;
};
#define DEFINE_TEST_FAIL(test) \
const struct test_fail test[] __initconst
#define DECLARE_TEST_OK(type, test_type) \
test_type { \
const char *str; \
unsigned int base; \
type expected_res; \
}
#define DEFINE_TEST_OK(type, test) \
const type test[] __initconst
#define TEST_FAIL(fn, type, fmt, test) \
{ \
unsigned int i; \
\
for_each_test(i, test) { \
const struct test_fail *t = &test[i]; \
type tmp; \
int rv; \
\
tmp = 0; \
rv = fn(t->str, t->base, &tmp); \
if (rv >= 0) { \
WARN(1, "str '%s', base %u, expected -E, got %d/" fmt "\n", \
t->str, t->base, rv, tmp); \
continue; \
} \
} \
}
#define TEST_OK(fn, type, fmt, test) \
{ \
unsigned int i; \
\
for_each_test(i, test) { \
const typeof(test[0]) *t = &test[i]; \
type res; \
int rv; \
\
rv = fn(t->str, t->base, &res); \
if (rv != 0) { \
WARN(1, "str '%s', base %u, expected 0/" fmt ", got %d\n", \
t->str, t->base, t->expected_res, rv); \
continue; \
} \
if (res != t->expected_res) { \
WARN(1, "str '%s', base %u, expected " fmt ", got " fmt "\n", \
t->str, t->base, t->expected_res, res); \
continue; \
} \
} \
}
static void __init test_kstrtoull_ok(void)
{
DECLARE_TEST_OK(unsigned long long, struct test_ull);
static DEFINE_TEST_OK(struct test_ull, test_ull_ok) = {
{"0", 10, 0ULL},
{"1", 10, 1ULL},
{"127", 10, 127ULL},
{"128", 10, 128ULL},
{"129", 10, 129ULL},
{"255", 10, 255ULL},
{"256", 10, 256ULL},
{"257", 10, 257ULL},
{"32767", 10, 32767ULL},
{"32768", 10, 32768ULL},
{"32769", 10, 32769ULL},
{"65535", 10, 65535ULL},
{"65536", 10, 65536ULL},
{"65537", 10, 65537ULL},
{"2147483647", 10, 2147483647ULL},
{"2147483648", 10, 2147483648ULL},
{"2147483649", 10, 2147483649ULL},
{"4294967295", 10, 4294967295ULL},
{"4294967296", 10, 4294967296ULL},
{"4294967297", 10, 4294967297ULL},
{"9223372036854775807", 10, 9223372036854775807ULL},
{"9223372036854775808", 10, 9223372036854775808ULL},
{"9223372036854775809", 10, 9223372036854775809ULL},
{"18446744073709551614", 10, 18446744073709551614ULL},
{"18446744073709551615", 10, 18446744073709551615ULL},
{"00", 8, 00ULL},
{"01", 8, 01ULL},
{"0177", 8, 0177ULL},
{"0200", 8, 0200ULL},
{"0201", 8, 0201ULL},
{"0377", 8, 0377ULL},
{"0400", 8, 0400ULL},
{"0401", 8, 0401ULL},
{"077777", 8, 077777ULL},
{"0100000", 8, 0100000ULL},
{"0100001", 8, 0100001ULL},
{"0177777", 8, 0177777ULL},
{"0200000", 8, 0200000ULL},
{"0200001", 8, 0200001ULL},
{"017777777777", 8, 017777777777ULL},
{"020000000000", 8, 020000000000ULL},
{"020000000001", 8, 020000000001ULL},
{"037777777777", 8, 037777777777ULL},
{"040000000000", 8, 040000000000ULL},
{"040000000001", 8, 040000000001ULL},
{"0777777777777777777777", 8, 0777777777777777777777ULL},
{"01000000000000000000000", 8, 01000000000000000000000ULL},
{"01000000000000000000001", 8, 01000000000000000000001ULL},
{"01777777777777777777776", 8, 01777777777777777777776ULL},
{"01777777777777777777777", 8, 01777777777777777777777ULL},
{"0x0", 16, 0x0ULL},
{"0x1", 16, 0x1ULL},
{"0x7f", 16, 0x7fULL},
{"0x80", 16, 0x80ULL},
{"0x81", 16, 0x81ULL},
{"0xff", 16, 0xffULL},
{"0x100", 16, 0x100ULL},
{"0x101", 16, 0x101ULL},
{"0x7fff", 16, 0x7fffULL},
{"0x8000", 16, 0x8000ULL},
{"0x8001", 16, 0x8001ULL},
{"0xffff", 16, 0xffffULL},
{"0x10000", 16, 0x10000ULL},
{"0x10001", 16, 0x10001ULL},
{"0x7fffffff", 16, 0x7fffffffULL},
{"0x80000000", 16, 0x80000000ULL},
{"0x80000001", 16, 0x80000001ULL},
{"0xffffffff", 16, 0xffffffffULL},
{"0x100000000", 16, 0x100000000ULL},
{"0x100000001", 16, 0x100000001ULL},
{"0x7fffffffffffffff", 16, 0x7fffffffffffffffULL},
{"0x8000000000000000", 16, 0x8000000000000000ULL},
{"0x8000000000000001", 16, 0x8000000000000001ULL},
{"0xfffffffffffffffe", 16, 0xfffffffffffffffeULL},
{"0xffffffffffffffff", 16, 0xffffffffffffffffULL},
{"0\n", 0, 0ULL},
};
TEST_OK(kstrtoull, unsigned long long, "%llu", test_ull_ok);
}
static void __init test_kstrtoull_fail(void)
{
static DEFINE_TEST_FAIL(test_ull_fail) = {
{"", 0},
{"", 8},
{"", 10},
{"", 16},
{"\n", 0},
{"\n", 8},
{"\n", 10},
{"\n", 16},
{"\n0", 0},
{"\n0", 8},
{"\n0", 10},
{"\n0", 16},
{"+", 0},
{"+", 8},
{"+", 10},
{"+", 16},
{"-", 0},
{"-", 8},
{"-", 10},
{"-", 16},
{"0x", 0},
{"0x", 16},
{"0X", 0},
{"0X", 16},
{"0 ", 0},
{"1+", 0},
{"1-", 0},
{" 2", 0},
/* base autodetection */
{"0x0z", 0},
{"0z", 0},
{"a", 0},
/* digit >= base */
{"2", 2},
{"8", 8},
{"a", 10},
{"A", 10},
{"g", 16},
{"G", 16},
/* overflow */
{"10000000000000000000000000000000000000000000000000000000000000000", 2},
{"2000000000000000000000", 8},
{"18446744073709551616", 10},
{"569202370375329612767", 10},
{"10000000000000000", 16},
/* negative */
{"-0", 0},
{"-0", 8},
{"-0", 10},
{"-0", 16},
{"-1", 0},
{"-1", 8},
{"-1", 10},
{"-1", 16},
/* sign is first character if any */
{"-+1", 0},
{"-+1", 8},
{"-+1", 10},
{"-+1", 16},
/* nothing after \n */
{"0\n0", 0},
{"0\n0", 8},
{"0\n0", 10},
{"0\n0", 16},
{"0\n+", 0},
{"0\n+", 8},
{"0\n+", 10},
{"0\n+", 16},
{"0\n-", 0},
{"0\n-", 8},
{"0\n-", 10},
{"0\n-", 16},
{"0\n ", 0},
{"0\n ", 8},
{"0\n ", 10},
{"0\n ", 16},
};
TEST_FAIL(kstrtoull, unsigned long long, "%llu", test_ull_fail);
}
static void __init test_kstrtoll_ok(void)
{
DECLARE_TEST_OK(long long, struct test_ll);
static DEFINE_TEST_OK(struct test_ll, test_ll_ok) = {
{"0", 10, 0LL},
{"1", 10, 1LL},
{"127", 10, 127LL},
{"128", 10, 128LL},
{"129", 10, 129LL},
{"255", 10, 255LL},
{"256", 10, 256LL},
{"257", 10, 257LL},
{"32767", 10, 32767LL},
{"32768", 10, 32768LL},
{"32769", 10, 32769LL},
{"65535", 10, 65535LL},
{"65536", 10, 65536LL},
{"65537", 10, 65537LL},
{"2147483647", 10, 2147483647LL},
{"2147483648", 10, 2147483648LL},
{"2147483649", 10, 2147483649LL},
{"4294967295", 10, 4294967295LL},
{"4294967296", 10, 4294967296LL},
{"4294967297", 10, 4294967297LL},
{"9223372036854775807", 10, 9223372036854775807LL},
{"-0", 10, 0LL},
{"-1", 10, -1LL},
{"-2", 10, -2LL},
{"-9223372036854775808", 10, LLONG_MIN},
};
TEST_OK(kstrtoll, long long, "%lld", test_ll_ok);
}
static void __init test_kstrtoll_fail(void)
{
static DEFINE_TEST_FAIL(test_ll_fail) = {
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"569202370375329612767", 10},
{"-9223372036854775809", 10},
{"-18446744073709551614", 10},
{"-18446744073709551615", 10},
{"-569202370375329612767", 10},
/* sign is first character if any */
{"-+1", 0},
{"-+1", 8},
{"-+1", 10},
{"-+1", 16},
};
TEST_FAIL(kstrtoll, long long, "%lld", test_ll_fail);
}
static void __init test_kstrtou64_ok(void)
{
DECLARE_TEST_OK(u64, struct test_u64);
static DEFINE_TEST_OK(struct test_u64, test_u64_ok) = {
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
{"128", 10, 128},
{"129", 10, 129},
{"254", 10, 254},
{"255", 10, 255},
{"256", 10, 256},
{"257", 10, 257},
{"32766", 10, 32766},
{"32767", 10, 32767},
{"32768", 10, 32768},
{"32769", 10, 32769},
{"65534", 10, 65534},
{"65535", 10, 65535},
{"65536", 10, 65536},
{"65537", 10, 65537},
{"2147483646", 10, 2147483646},
{"2147483647", 10, 2147483647},
{"2147483648", 10, 2147483648ULL},
{"2147483649", 10, 2147483649ULL},
{"4294967294", 10, 4294967294ULL},
{"4294967295", 10, 4294967295ULL},
{"4294967296", 10, 4294967296ULL},
{"4294967297", 10, 4294967297ULL},
{"9223372036854775806", 10, 9223372036854775806ULL},
{"9223372036854775807", 10, 9223372036854775807ULL},
{"9223372036854775808", 10, 9223372036854775808ULL},
{"9223372036854775809", 10, 9223372036854775809ULL},
{"18446744073709551614", 10, 18446744073709551614ULL},
{"18446744073709551615", 10, 18446744073709551615ULL},
};
TEST_OK(kstrtou64, u64, "%llu", test_u64_ok);
}
static void __init test_kstrtou64_fail(void)
{
static DEFINE_TEST_FAIL(test_u64_fail) = {
{"-2", 10},
{"-1", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
{"569202370375329612767", 10},
};
TEST_FAIL(kstrtou64, u64, "%llu", test_u64_fail);
}
static void __init test_kstrtos64_ok(void)
{
DECLARE_TEST_OK(s64, struct test_s64);
static DEFINE_TEST_OK(struct test_s64, test_s64_ok) = {
{"-128", 10, -128},
{"-127", 10, -127},
{"-1", 10, -1},
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
{"128", 10, 128},
{"129", 10, 129},
{"254", 10, 254},
{"255", 10, 255},
{"256", 10, 256},
{"257", 10, 257},
{"32766", 10, 32766},
{"32767", 10, 32767},
{"32768", 10, 32768},
{"32769", 10, 32769},
{"65534", 10, 65534},
{"65535", 10, 65535},
{"65536", 10, 65536},
{"65537", 10, 65537},
{"2147483646", 10, 2147483646},
{"2147483647", 10, 2147483647},
{"2147483648", 10, 2147483648LL},
{"2147483649", 10, 2147483649LL},
{"4294967294", 10, 4294967294LL},
{"4294967295", 10, 4294967295LL},
{"4294967296", 10, 4294967296LL},
{"4294967297", 10, 4294967297LL},
{"9223372036854775806", 10, 9223372036854775806LL},
{"9223372036854775807", 10, 9223372036854775807LL},
};
TEST_OK(kstrtos64, s64, "%lld", test_s64_ok);
}
static void __init test_kstrtos64_fail(void)
{
static DEFINE_TEST_FAIL(test_s64_fail) = {
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
{"569202370375329612767", 10},
{"-569202370375329612767", 10},
};
TEST_FAIL(kstrtos64, s64, "%lld", test_s64_fail);
}
static void __init test_kstrtou32_ok(void)
{
DECLARE_TEST_OK(u32, struct test_u32);
static DEFINE_TEST_OK(struct test_u32, test_u32_ok) = {
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
{"128", 10, 128},
{"129", 10, 129},
{"254", 10, 254},
{"255", 10, 255},
{"256", 10, 256},
{"257", 10, 257},
{"32766", 10, 32766},
{"32767", 10, 32767},
{"32768", 10, 32768},
{"32769", 10, 32769},
{"65534", 10, 65534},
{"65535", 10, 65535},
{"65536", 10, 65536},
{"65537", 10, 65537},
{"2147483646", 10, 2147483646},
{"2147483647", 10, 2147483647},
{"2147483648", 10, 2147483648U},
{"2147483649", 10, 2147483649U},
{"4294967294", 10, 4294967294U},
{"4294967295", 10, 4294967295U},
};
TEST_OK(kstrtou32, u32, "%u", test_u32_ok);
}
static void __init test_kstrtou32_fail(void)
{
static DEFINE_TEST_FAIL(test_u32_fail) = {
{"-2", 10},
{"-1", 10},
{"4294967296", 10},
{"4294967297", 10},
{"9223372036854775806", 10},
{"9223372036854775807", 10},
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
};
TEST_FAIL(kstrtou32, u32, "%u", test_u32_fail);
}
static void __init test_kstrtos32_ok(void)
{
DECLARE_TEST_OK(s32, struct test_s32);
static DEFINE_TEST_OK(struct test_s32, test_s32_ok) = {
{"-128", 10, -128},
{"-127", 10, -127},
{"-1", 10, -1},
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
{"128", 10, 128},
{"129", 10, 129},
{"254", 10, 254},
{"255", 10, 255},
{"256", 10, 256},
{"257", 10, 257},
{"32766", 10, 32766},
{"32767", 10, 32767},
{"32768", 10, 32768},
{"32769", 10, 32769},
{"65534", 10, 65534},
{"65535", 10, 65535},
{"65536", 10, 65536},
{"65537", 10, 65537},
{"2147483646", 10, 2147483646},
{"2147483647", 10, 2147483647},
};
TEST_OK(kstrtos32, s32, "%d", test_s32_ok);
}
static void __init test_kstrtos32_fail(void)
{
static DEFINE_TEST_FAIL(test_s32_fail) = {
{"2147483648", 10},
{"2147483649", 10},
{"4294967294", 10},
{"4294967295", 10},
{"4294967296", 10},
{"4294967297", 10},
{"9223372036854775806", 10},
{"9223372036854775807", 10},
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
};
TEST_FAIL(kstrtos32, s32, "%d", test_s32_fail);
}
static void __init test_kstrtou16_ok(void)
{
DECLARE_TEST_OK(u16, struct test_u16);
static DEFINE_TEST_OK(struct test_u16, test_u16_ok) = {
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
{"128", 10, 128},
{"129", 10, 129},
{"254", 10, 254},
{"255", 10, 255},
{"256", 10, 256},
{"257", 10, 257},
{"32766", 10, 32766},
{"32767", 10, 32767},
{"32768", 10, 32768},
{"32769", 10, 32769},
{"65534", 10, 65534},
{"65535", 10, 65535},
};
TEST_OK(kstrtou16, u16, "%hu", test_u16_ok);
}
static void __init test_kstrtou16_fail(void)
{
static DEFINE_TEST_FAIL(test_u16_fail) = {
{"-2", 10},
{"-1", 10},
{"65536", 10},
{"65537", 10},
{"2147483646", 10},
{"2147483647", 10},
{"2147483648", 10},
{"2147483649", 10},
{"4294967294", 10},
{"4294967295", 10},
{"4294967296", 10},
{"4294967297", 10},
{"9223372036854775806", 10},
{"9223372036854775807", 10},
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
};
TEST_FAIL(kstrtou16, u16, "%hu", test_u16_fail);
}
static void __init test_kstrtos16_ok(void)
{
DECLARE_TEST_OK(s16, struct test_s16);
static DEFINE_TEST_OK(struct test_s16, test_s16_ok) = {
{"-130", 10, -130},
{"-129", 10, -129},
{"-128", 10, -128},
{"-127", 10, -127},
{"-1", 10, -1},
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
{"128", 10, 128},
{"129", 10, 129},
{"254", 10, 254},
{"255", 10, 255},
{"256", 10, 256},
{"257", 10, 257},
{"32766", 10, 32766},
{"32767", 10, 32767},
};
TEST_OK(kstrtos16, s16, "%hd", test_s16_ok);
}
static void __init test_kstrtos16_fail(void)
{
static DEFINE_TEST_FAIL(test_s16_fail) = {
{"32768", 10},
{"32769", 10},
{"65534", 10},
{"65535", 10},
{"65536", 10},
{"65537", 10},
{"2147483646", 10},
{"2147483647", 10},
{"2147483648", 10},
{"2147483649", 10},
{"4294967294", 10},
{"4294967295", 10},
{"4294967296", 10},
{"4294967297", 10},
{"9223372036854775806", 10},
{"9223372036854775807", 10},
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
};
TEST_FAIL(kstrtos16, s16, "%hd", test_s16_fail);
}
static void __init test_kstrtou8_ok(void)
{
DECLARE_TEST_OK(u8, struct test_u8);
static DEFINE_TEST_OK(struct test_u8, test_u8_ok) = {
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
{"128", 10, 128},
{"129", 10, 129},
{"254", 10, 254},
{"255", 10, 255},
};
TEST_OK(kstrtou8, u8, "%hhu", test_u8_ok);
}
static void __init test_kstrtou8_fail(void)
{
static DEFINE_TEST_FAIL(test_u8_fail) = {
{"-2", 10},
{"-1", 10},
{"256", 10},
{"257", 10},
{"32766", 10},
{"32767", 10},
{"32768", 10},
{"32769", 10},
{"65534", 10},
{"65535", 10},
{"65536", 10},
{"65537", 10},
{"2147483646", 10},
{"2147483647", 10},
{"2147483648", 10},
{"2147483649", 10},
{"4294967294", 10},
{"4294967295", 10},
{"4294967296", 10},
{"4294967297", 10},
{"9223372036854775806", 10},
{"9223372036854775807", 10},
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
};
TEST_FAIL(kstrtou8, u8, "%hhu", test_u8_fail);
}
static void __init test_kstrtos8_ok(void)
{
DECLARE_TEST_OK(s8, struct test_s8);
static DEFINE_TEST_OK(struct test_s8, test_s8_ok) = {
{"-128", 10, -128},
{"-127", 10, -127},
{"-1", 10, -1},
{"0", 10, 0},
{"1", 10, 1},
{"126", 10, 126},
{"127", 10, 127},
};
TEST_OK(kstrtos8, s8, "%hhd", test_s8_ok);
}
static void __init test_kstrtos8_fail(void)
{
static DEFINE_TEST_FAIL(test_s8_fail) = {
{"-130", 10},
{"-129", 10},
{"128", 10},
{"129", 10},
{"254", 10},
{"255", 10},
{"256", 10},
{"257", 10},
{"32766", 10},
{"32767", 10},
{"32768", 10},
{"32769", 10},
{"65534", 10},
{"65535", 10},
{"65536", 10},
{"65537", 10},
{"2147483646", 10},
{"2147483647", 10},
{"2147483648", 10},
{"2147483649", 10},
{"4294967294", 10},
{"4294967295", 10},
{"4294967296", 10},
{"4294967297", 10},
{"9223372036854775806", 10},
{"9223372036854775807", 10},
{"9223372036854775808", 10},
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
};
TEST_FAIL(kstrtos8, s8, "%hhd", test_s8_fail);
}
static void __init test_kstrtoudec64_ok(void)
{
DECLARE_TEST_OK(u64, struct test_udec64);
static DEFINE_TEST_OK(struct test_udec64, test_udec64_ok) = {
/* basic: integer.fraction, exact digits */
{"0.0", 1, 0},
{"1.5", 1, 15},
{"1.234", 3, 1234},
{"42.0", 1, 420},
/* zero */
{"0.0", 1, 0},
{"0.000", 3, 0},
/* integer only */
{"0", 1, 0},
{"42", 3, 42000},
{"123.", 2, 12300},
{"1", 1, 10},
/* fractional only (leading dot) */
{".5", 1, 5},
{".5", 0, 0},
{".123", 3, 123},
{".001", 3, 1},
/* zero padding: fewer fractional digits than scale */
{"1.2", 3, 1200},
{"1.2", 6, 1200000},
{"0.01", 3, 10},
{"0.1", 9, 100000000ULL},
{"0.01", 9, 10000000},
/* truncation: more fractional digits than scale */
{"1.23456", 3, 1234},
{"3.1415926535", 6, 3141592},
{"0.999999999", 3, 999},
{"1.99", 1, 19},
{"1.234", 0, 1},
/* trailing newline */
{"1.5\n", 1, 15},
{"42\n", 3, 42000},
/* plus sign */
{"+1.5", 1, 15},
{"+.5", 1, 5},
/* scale progression */
{"1.", 0, 1},
{"1.0", 1, 10},
{"1.00", 2, 100},
{"1.000", 3, 1000},
{"1.000000", 6, 1000000},
{"1.000000000", 9, 1000000000ULL},
/* max limit check */
{"18446744073.709551615", 9, ULLONG_MAX},
{"18446744073709.551615", 6, ULLONG_MAX},
{"0.18446744073709551615", 20, ULLONG_MAX},
/* scale > 19: representable when integer part is small */
{"0.00000000000000000001", 20, 1},
{"0.1", 20, 10000000000000000000ULL},
{"0.00000000000000000000001", 23, 1},
/* truncation with scale > 19 */
{"0.0000000000000000000012345", 23, 123},
/* truncation with many excess digits */
{"0.00000000000000000000000000000000423", 34, 42},
{"1.99999999999999999999999999999999999", 3, 1999},
};
TEST_OK(kstrtoudec64, u64, "%llu", test_udec64_ok);
}
static void __init test_kstrtoudec64_fail(void)
{
static DEFINE_TEST_FAIL(test_udec64_fail) = {
/* empty / whitespace */
{"", 3},
{"\n", 3},
/* minus sign (unsigned) */
{"-1.5", 1},
{"-0.5", 1},
/* only a decimal point */
{".", 3},
{".", 0},
/* only a sign */
{"+", 3},
/* non-digit characters */
{"abc", 3},
{"1.2x", 3},
/* leading/trailing space */
{" 1.5", 1},
{"1.5 ", 1},
/* overflow */
{"18446744073710.551615", 6},
{"99999999999999999999", 1},
/* overflow with scale > 19 */
{"1.0", 21},
{"0.2", 20},
{"0.18446744073709551616", 20},
{"1", 20},
};
TEST_FAIL(kstrtoudec64, u64, "%llu", test_udec64_fail);
}
static void __init test_kstrtodec64_ok(void)
{
DECLARE_TEST_OK(s64, struct test_dec64);
static DEFINE_TEST_OK(struct test_dec64, test_dec64_ok) = {
/* basic positive */
{"0.0", 1, 0},
{"1.5", 1, 15},
{"1.234", 3, 1234},
/* basic negative */
{"-1.5", 1, -15},
{"-1.234", 3, -1234},
{"-0.5", 1, -5},
{"-0.001", 3, -1},
/* zero (signed) */
{"-0", 1, 0},
{"-0.0", 1, 0},
{"0.000", 3, 0},
/* integer only */
{"42", 3, 42000},
{"-42", 3, -42000},
/* fractional only */
{".5", 1, 5},
{"-.5", 1, -5},
/* zero padding */
{"1.2", 3, 1200},
{"-1.2", 3, -1200},
{"0.01", 3, 10},
{"-0.01", 3, -10},
/* truncation */
{"1.23456", 3, 1234},
{"-1.23456", 3, -1234},
{"0.999999999", 3, 999},
{"-0.999999999", 3, -999},
/* trailing newline */
{"1.5\n", 1, 15},
{"-1.5\n", 1, -15},
/* plus sign */
{"+1.5", 1, 15},
/* limits */
{"9223372036.854775807", 9, LLONG_MAX},
{"-9223372036.854775808", 9, LLONG_MIN},
/* scale > 19 */
{"0.0", 20, 0},
{"-0.0", 20, 0},
{"0.00000000000000000001", 20, 1},
{"-0.00000000000000000001", 20, -1},
{"0.009223372036854775807", 21, LLONG_MAX},
{"-0.009223372036854775808", 21, LLONG_MIN},
};
TEST_OK(kstrtodec64, s64, "%lld", test_dec64_ok);
}
static void __init test_kstrtodec64_fail(void)
{
static DEFINE_TEST_FAIL(test_dec64_fail) = {
/* empty / whitespace */
{"", 3},
{"\n", 3},
/* no digits after dot */
{".", 3},
{"-.", 3},
/* no digits at all */
{"+", 3},
{"-", 3},
/* non-digit characters */
{"abc", 3},
{"-1.2x", 3},
/* signed overflow */
{"9223372036.854775808", 9},
{"-9223372036.854775809", 9},
{"99999999999999999999", 1},
/* signed overflow with scale > 19 */
{"0.1", 20},
{"-0.1", 20},
{"0.09223372036854775808", 20},
{"-0.09223372036854775809", 20},
};
TEST_FAIL(kstrtodec64, s64, "%lld", test_dec64_fail);
}
static int __init test_kstrtox_init(void)
{
test_kstrtoull_ok();
test_kstrtoull_fail();
test_kstrtoll_ok();
test_kstrtoll_fail();
test_kstrtou64_ok();
test_kstrtou64_fail();
test_kstrtos64_ok();
test_kstrtos64_fail();
test_kstrtou32_ok();
test_kstrtou32_fail();
test_kstrtos32_ok();
test_kstrtos32_fail();
test_kstrtou16_ok();
test_kstrtou16_fail();
test_kstrtos16_ok();
test_kstrtos16_fail();
test_kstrtou8_ok();
test_kstrtou8_fail();
test_kstrtos8_ok();
test_kstrtos8_fail();
test_kstrtoudec64_ok();
test_kstrtoudec64_fail();
test_kstrtodec64_ok();
test_kstrtodec64_fail();
return -EINVAL;
}
module_init(test_kstrtox_init);
MODULE_DESCRIPTION("Module test for kstrto*() APIs");
MODULE_LICENSE("Dual BSD/GPL");
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