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Set errno in strtol family of functions (#110)

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Alison Winters 2021-03-07 14:18:08 -08:00 • committed by GitHub
parent b16b332539
commit f5da4efcaf
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6 changed files with 57 additions and 13 deletions
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13
libc/fmt/strtoul.c
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@ -17,12 +17,19 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/fmt/conv.h"
#include "libc/errno.h"
#include "libc/limits.h"
unsigned long strtoul(const char *s, char **endptr, int optional_base) {
unsigned long long res;
intmax_t res;
res = strtoimax(s, endptr, optional_base);
if (res < ULONG_MIN) return ULONG_MIN;
if (res > ULONG_MAX) return ULONG_MAX;
if (res < ULONG_MIN) {
errno = ERANGE;
return ULONG_MIN;
}
if (res > ULONG_MAX) {
errno = ERANGE;
return ULONG_MAX;
}
return res;
}