diff options
Diffstat (limited to 'strtouh.c')
| -rw-r--r-- | strtouh.c | 36 |
1 files changed, 34 insertions, 2 deletions
@@ -4,10 +4,10 @@ unsigned short int -libsimple_strtouh(const char *restrict nptr, char **restrict end, int base) /* TODO test, man */ +libsimple_strtouh(const char *restrict nptr, char **restrict end, int base) { unsigned long int r = strtoul(nptr, end, base); - if(r > USHRT_MAX) { + if (r > USHRT_MAX) { r = USHRT_MAX; errno = ERANGE; } @@ -18,9 +18,41 @@ libsimple_strtouh(const char *restrict nptr, char **restrict end, int base) /* T #else #include "test.h" +static void +add_one(char *buf) +{ + char *p = strchr(buf, '\0'); + while (*--p == '9') + *p = '0'; + *p += 1; +} + int main(void) { + char str[128]; + char *e; + sprintf(str, "0x%x", (unsigned int)USHRT_MAX); + errno = 0; + assert(strtouh(str, NULL, 0) == USHRT_MAX && !errno); + assert(strtouh(str, NULL, 16) == USHRT_MAX && !errno); + assert(strtouh(&str[2], NULL, 16) == USHRT_MAX && !errno); + assert(strtouh(str, NULL, 10) == 0 && !errno); + assert(strtouh(str, &e, 0) == USHRT_MAX && !*e && !errno); + assert(strtouh(str, &e, 10) == 0 && *e == 'x' && !errno); + sprintf(str, "0x%x ", (unsigned int)USHRT_MAX); + assert(strtouh(str, &e, 16) == USHRT_MAX && *e == ' ' && !errno); + sprintf(str, "%u", (unsigned int)USHRT_MAX); + assert(strtouh(str, &e, 10) == USHRT_MAX && !*e && !errno); + assert(strtouh("1234", &e, 10) == 1234 && !*e && !errno); + assert(strtouh("1234", &e, 8) == 01234 && !*e && !errno); + assert(strtouh("01234", &e, 0) == 01234 && !*e && !errno); + sprintf(str, "%u", (unsigned int)USHRT_MAX); + add_one(str); + assert(strtouh(str, &e, 10) == USHRT_MAX && !*e && errno == ERANGE); + errno = 0; + assert(!strtouh("1", &e, -10000) && errno == EINVAL); + errno = 0; return 0; } |