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author | Mattias Andrée <maandree@kth.se> | 2024-08-18 09:58:23 +0200 |
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committer | Mattias Andrée <maandree@kth.se> | 2024-08-18 09:58:23 +0200 |
commit | a69f0f613687edf6c1f1ee83b462f77e8ea3c9a9 (patch) | |
tree | d976683461a0f427d2f1ef79a8732a048dd0c67b /strtoi.c | |
parent | Merge tag '1.3' into since (diff) | |
parent | Update VERSION_MINOR (diff) | |
download | libsimple-a69f0f613687edf6c1f1ee83b462f77e8ea3c9a9.tar.gz libsimple-a69f0f613687edf6c1f1ee83b462f77e8ea3c9a9.tar.bz2 libsimple-a69f0f613687edf6c1f1ee83b462f77e8ea3c9a9.tar.xz |
Merge tag '1.4' into since
Version 1.4
Diffstat (limited to 'strtoi.c')
-rw-r--r-- | strtoi.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/strtoi.c b/strtoi.c new file mode 100644 index 0000000..946d647 --- /dev/null +++ b/strtoi.c @@ -0,0 +1,69 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" +#ifndef TEST + + +signed int +libsimple_strtoi(const char *restrict nptr, char **restrict end, int base) +{ + signed long int r = strtol(nptr, end, base); + if (r < INT_MIN) { + r = INT_MIN; + errno = ERANGE; + } else if (r > INT_MAX) { + r = INT_MAX; + errno = ERANGE; + } + return (signed int)r; +} + + +#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", INT_MAX); + errno = 0; + assert(strtoi(str, NULL, 0) == INT_MAX && !errno); + assert(strtoi(str, NULL, 16) == INT_MAX && !errno); + assert(strtoi(&str[2], NULL, 16) == INT_MAX && !errno); + assert(strtoi(str, NULL, 10) == 0 && !errno); + assert(strtoi(str, &e, 0) == INT_MAX && !*e && !errno); + assert(strtoi(str, &e, 10) == 0 && *e == 'x' && !errno); + sprintf(str, "0x%x ", INT_MAX); + assert(strtoi(str, &e, 16) == INT_MAX && *e == ' ' && !errno); + sprintf(str, "-%i", INT_MAX); + assert(strtoi(&str[1], &e, 10) == INT_MAX && !*e && !errno); + assert(strtoi(str, &e, 10) == -INT_MAX && !*e && !errno); + sprintf(str, "%i", INT_MIN); + assert(strtoi(str, &e, 10) == INT_MIN && !*e && !errno); + assert(strtoi("1234", &e, 10) == 1234 && !*e && !errno); + assert(strtoi("1234", &e, 8) == 01234 && !*e && !errno); + assert(strtoi("01234", &e, 0) == 01234 && !*e && !errno); + sprintf(str, "%i", INT_MAX); + add_one(str); + assert(strtoi(str, &e, 10) == INT_MAX && !*e && errno == ERANGE); + errno = 0; + sprintf(str, "%i", INT_MIN); + add_one(str); + assert(strtoi(str, &e, 10) == INT_MIN && !*e && errno == ERANGE); + errno = 0; + assert(!strtoi("1", &e, -10000) && errno == EINVAL); + errno = 0; + return 0; +} + +#endif |