github.com/afumu/libc@v0.0.6/musl/src/stdlib/strtol.c (about) 1 #include "stdio_impl.h" 2 #include "intscan.h" 3 #include "shgetc.h" 4 #include <inttypes.h> 5 #include <limits.h> 6 #include <ctype.h> 7 8 static unsigned long long strtox(const char *s, char **p, int base, unsigned long long lim) 9 { 10 FILE f; 11 sh_fromstring(&f, s); 12 shlim(&f, 0); 13 unsigned long long y = __intscan(&f, base, 1, lim); 14 if (p) { 15 size_t cnt = shcnt(&f); 16 *p = (char *)s + cnt; 17 } 18 return y; 19 } 20 21 unsigned long long strtoull(const char *restrict s, char **restrict p, int base) 22 { 23 return strtox(s, p, base, ULLONG_MAX); 24 } 25 26 long long strtoll(const char *restrict s, char **restrict p, int base) 27 { 28 return strtox(s, p, base, LLONG_MIN); 29 } 30 31 unsigned long strtoul(const char *restrict s, char **restrict p, int base) 32 { 33 return strtox(s, p, base, ULONG_MAX); 34 } 35 36 long strtol(const char *restrict s, char **restrict p, int base) 37 { 38 return strtox(s, p, base, 0UL+LONG_MIN); 39 } 40 41 intmax_t strtoimax(const char *restrict s, char **restrict p, int base) 42 { 43 return strtoll(s, p, base); 44 } 45 46 uintmax_t strtoumax(const char *restrict s, char **restrict p, int base) 47 { 48 return strtoull(s, p, base); 49 } 50 51 weak_alias(strtol, __strtol_internal); 52 weak_alias(strtoul, __strtoul_internal); 53 weak_alias(strtoll, __strtoll_internal); 54 weak_alias(strtoull, __strtoull_internal); 55 weak_alias(strtoimax, __strtoimax_internal); 56 weak_alias(strtoumax, __strtoumax_internal);