diff options
Diffstat (limited to 'strtou32.c')
| -rw-r--r-- | strtou32.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/strtou32.c b/strtou32.c new file mode 100644 index 0000000..8e20bb1 --- /dev/null +++ b/strtou32.c @@ -0,0 +1,46 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" +#ifndef TEST + +#define RET_MAX 4294967295ULL + + +uint_least32_t +libsimple_strtou32(const char *restrict nptr, char **restrict end, int base) +{ + uintmax_t r = strtoumax(nptr, end, base); + if (r > RET_MAX) { + r = RET_MAX; + errno = ERANGE; + } + return (uint_least32_t)r; +} + + +#else +#include "test.h" + +int +main(void) +{ + char *e; + errno = 0; + assert(strtou32("0xFFFFFFFF", NULL, 0) == UINT32_C(0xFFFFFFFF) && !errno); + assert(strtou32("0xFFFFFFFF", NULL, 16) == UINT32_C(0xFFFFFFFF) && !errno); + assert(strtou32("FFFFFFFF", NULL, 16) == UINT32_C(0xFFFFFFFF) && !errno); + assert(strtou32("0xFFFFFFFF", NULL, 10) == 0 && !errno); + assert(strtou32("0xFFFFFFFF", &e, 0) == UINT32_C(0xFFFFFFFF) && !*e && !errno); + assert(strtou32("0xFFFFFFFF ", &e, 16) == UINT32_C(0xFFFFFFFF) && *e == ' ' && !errno); + assert(strtou32("0xFFFFFFFF", &e, 10) == 0 && *e == 'x' && !errno); + assert(strtou32("4294967295", &e, 10) == UINT32_C(0xFFFFFFFF) && !*e && !errno); + assert(strtou32("1234", &e, 10) == 1234 && !*e && !errno); + assert(strtou32("1234", &e, 8) == 01234 && !*e && !errno); + assert(strtou32("01234", &e, 0) == 01234 && !*e && !errno); + assert(strtou32("4294967296", &e, 10) == UINT32_C(4294967295) && !*e && errno == ERANGE); + errno = 0; + assert(!strtou32("1", &e, -10000) && errno == EINVAL); + errno = 0; + return 0; +} + +#endif |