diff options
Diffstat (limited to 'strtoh.c')
| -rw-r--r-- | strtoh.c | 45 |
1 files changed, 42 insertions, 3 deletions
@@ -4,13 +4,13 @@ signed short int -libsimple_strtoh(const char *restrict nptr, char **restrict end, int base) /* TODO test, man */ +libsimple_strtoh(const char *restrict nptr, char **restrict end, int base) { signed long int r = strtol(nptr, end, base); - if(r < SHRT_MIN) { + if (r < SHRT_MIN) { r = SHRT_MIN; errno = ERANGE; - } else if(r > SHRT_MAX) { + } else if (r > SHRT_MAX) { r = SHRT_MAX; errno = ERANGE; } @@ -21,9 +21,48 @@ libsimple_strtoh(const char *restrict nptr, char **restrict end, int base) /* TO #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)SHRT_MAX); + errno = 0; + assert(strtoh(str, NULL, 0) == SHRT_MAX && !errno); + assert(strtoh(str, NULL, 16) == SHRT_MAX && !errno); + assert(strtoh(&str[2], NULL, 16) == SHRT_MAX && !errno); + assert(strtoh(str, NULL, 10) == 0 && !errno); + assert(strtoh(str, &e, 0) == SHRT_MAX && !*e && !errno); + assert(strtoh(str, &e, 10) == 0 && *e == 'x' && !errno); + sprintf(str, "0x%x ", (unsigned int)SHRT_MAX); + assert(strtoh(str, &e, 16) == SHRT_MAX && *e == ' ' && !errno); + sprintf(str, "-%i", SHRT_MAX); + assert(strtoh(&str[1], &e, 10) == SHRT_MAX && !*e && !errno); + assert(strtoh(str, &e, 10) == -SHRT_MAX && !*e && !errno); + sprintf(str, "%i", SHRT_MIN); + assert(strtoh(str, &e, 10) == SHRT_MIN && !*e && !errno); + assert(strtoh("1234", &e, 10) == 1234 && !*e && !errno); + assert(strtoh("1234", &e, 8) == 01234 && !*e && !errno); + assert(strtoh("01234", &e, 0) == 01234 && !*e && !errno); + sprintf(str, "%i", SHRT_MAX); + add_one(str); + assert(strtoh(str, &e, 10) == SHRT_MAX && !*e && errno == ERANGE); + errno = 0; + sprintf(str, "%i", SHRT_MIN); + add_one(str); + assert(strtoh(str, &e, 10) == SHRT_MIN && !*e && errno == ERANGE); + errno = 0; + assert(!strtoh("1", &e, -10000) && errno == EINVAL); + errno = 0; return 0; } |