ref: 52549a2648ebf58b4d31fae7290ad5651638046c
dir: /src/libc/stdlib/atoi.c/
#include <ctype.h> #include <stdlib.h> #include "../libc.h" #undef atoi int atoi(const char *s) { int n, d, sign = -1; while (isspace(*s)) ++s; switch (*s) { case '-': sign = 1; case '+': ++s; } /* Compute n as a negative number to avoid overflow on INT_MIN */ for (n = 0; (d = _dtoi(*s)) < 10; ++s) n = n*10 - d; return sign * n; }